Dr. Timothy A Livengood

Dr. Timothy A Livengood

  • RESEARCH SCIENTIST
  • 301.286.1552
  • NASA/GSFC
  • Mail Code: 693
  • Greenbelt , MD 20771
  • Employer: UNIV OF MARYLAND COLLEGE PARK
  • Brief Bio

    Observational planetary astronomer using groundbased mid-infrared and space-based UV/visible/NIR techniques to investigate atmospheres of the major planets. Investigate volatiles on the Moon using neutron remote-sensing.

    Research Interests

    Lunar volatiles

    Investigate diurnal variability in hydrogen-bearing volatiles on the Moon to investigate current populations of free volatile species on the Mon. Also investigating mapped distributions of volatiles in comparison to topography and measures of mineralogy. Methodology includes neutron remote-sensing with possible future investigations using optical/near-IR spectroscopy and occultation methods.

    Exoplanet analogs

    Use visible-light and near-IR remote sensing of Earth, Moon, Mars as models for terrestrial exoplanets and the properties such planets could -- or would not -- display in unresolved remote sensing.

    Inner planet atmospheres

    Investigations of chemcial composition, isotope ratios, and wind velocities in inner planet atmospheres -- Venus, Mars, Earth (some day!) -- using extremely high-resolution mid-infrared spectroscopy. These investigations include laboratory spectroscopy and instrument development to support future advances.

    Outer planet atmospheres and aurorae

    Field measurements of composition, temperature, and winds in outer planet stratospheres using extremely high-resolution mid-infrared spectroscopy. Investigations of auroral emissions in Jupiter, Saturn, others, using ground-based infrared and space-based UV spectroscopy and imaging techniques. Investigate giant-planet atmospheric response to impacts and seasonal variability.

    Current Projects

    Seasonal variability in Jupiter Aurora

    Review 20+ years of mid-infrared spectroscopy of Jupiter collected in groundbased infrared heterodyne spectroscopy. Preliminary analysis demonstrates solar-cycle effect that is not observed in auroral phenomena on Jupiter at any other wavelength range.

    Diurnal Variability in Mars Atmospheric Isotopes

    High-resolution infrared heterodyne spectroscopy of Mars demonstrates variability in O-18-substituted CO2 on Mars that appears to be sensitive to Mars surface temperature. Proposed mechanism is thermally controlled adsorption and desorption on Mars regolith due to diurnal variability, revealing significant enrichment of O-18 in Mars atmosphere in mid-afternoon measurements, consistent with loss to space of majority of primordial atmosphere.

    Neutron Flux Mapping of the Moon

    Developing advanced mapping of lunar neutron flux. Epithermal neutrons (E~0.4 eV) are locally suppressed where hydrogen is present in the regolith, whereas thermal neutron flux (E<0.4 eV) is suppressed in the presence of high-Z elements and high-energy epithermal (HEE) neutron flux (E~100 keV) is enhanced in the presence of high-Z elements. Distributions of these species can be used to investigate elemental composition of the regolith and compared to other measures of mineralogy to investigate associations with hydrogen content.

    Backburner Project: Saturn Seasonal Change

    Archived mid-infrared spectroscopy from 1990's through 2010 explores temperature and abundance o fthe hydrocarbon species ethane in the stratosphere of Saturn during transition from southern summer to northern summer. 

    Backburner Project: Saturn Ring Asymmetry

    Archived mid-infrared imaging from mid-90's shows that near equinox, Saturn rings at western elongation (receding) emit significantly more infrared radiation than at eastern elongation (approaching), more than expected from diurnal thermal variability. Variation is wavelength-dependent.

    Backburner Project: Mars as an Exoplanet

    Archived data from the EPOXI mission and Deep Impact spacecraft. Mars near-IR spectra and visible photometry collected in 2009 characterize Mars as a model for an extrasolar terrestrial planet. Data need to be described and reported in the literature. Additional data were collected on diurnally variable near-IR spectra of Mars globally in early 2012.

    Backburner Project: Jupiter Mid-IR Auroral Imaging

    Low spatial-resolution imaging of Jupiter was collected at mid-IR wavelengths in 1994-1996. These data show nonconjugate auroral brightening, unlike aurora at other wavelengths on Jupiter. Spatial distribution of emission needs to be investigated to compare with location of emission at other wavelengths to characterize the energy distribution of primary particles entering Jupiter's atmosphere, since only high-energy particles can penetrate to hydrocarbon molecules in the stratosphere.

    Backburner Project: Jupiter UV Aurora

    UV spectroscopy of Jupiter aurora was collected using the International Ultraviolet Explorer (IUE) sateliite, in Earth orbit, from 1978 until a 6-week marathon of observations in August-September 1996. About half of all Jupiter spectra with IUE were collected in the final marathon, most of it unpublished.

    Positions/Employment

    8/2011 - Present

    Assistant Research Scientist

    University of Maryland, Goddard Space Flight Center

    Planetary science investigations using neutron remote-sensing of the Moon from the Lunar Reconnaissance Orbiter as well as individual investigator grants for investigations of Mars and Jupiter.

    6/2009 - 6/2011

    Senior Research Scientist

    National Center for Earth and Space Science Education, Tides Foundation, Goddard Space Flight Center

    Planetary science investigations of solar system atmospheres, including spacebased observations of Earth, Moon, Mars in the EPOXI mission, and groundbased infrared investigations of Venus, Mars, Jupiter, Saturn, Titan. Education and public outreach lead for EPOCh component of EPOXI mission. Classroom and large auditorium presentations on behalf of EPOXI mission.

    10/2008 - 6/2009

    Assistant Research Scientist

    University of Maryland, Goddard Space Flight Center

    Planetary science investigations of solar system atmospheres, including spacebased observations of Earth, Moon, Mars in the EPOXI mission, and groundbased infrared investigations of Venus, Mars, Jupiter, Saturn, Titan. Education and public outreach lead for EPOCh component of EPOXI mission. Classroom and large auditorium presentations on behalf of EPOXI mission.

    7/2005 - 9/2008

    Senior Research Scientist

    National Center for Earth and Space Science Education, Universities Space Research Association, Goddard Space Flight Center

    Planetary science investigations of solar system atmospheres, including spacebased observations of Earth and Moon in the EPOXI mission, and groundbased infrared investigations of Venus, Mars, Jupiter, Saturn, Titan. Education and public outreach lead for EPOCh component of EPOXI mission. Education and public outreach role in developing K-13 education modules, verifying scientific accuracy, leading teams to support communities in Journey through the Universe community education initiative, leading space science education workshops of 20-200 teachers, making classroom presentations on space science and large-auditorium presentations.

    10/1999 - 6/2005

    Space Science Researcher

    Challenger Center for Earth and Space Science Education, Goddard Space Flight Center and Alexandria, VA

    Planetary science investigations of solar system atmospheres in groundbased infrared investigations of Venus, Mars, Jupiter, Saturn, Titan. Education and public outreach role in developing K-13 education modules, verifying scientific accuracy, leading teams to support communities in Journey through the Universe community education initiative, leading space science education workshops of 20-200 teachers, making classroom presentations on space science and large-auditorium presentations.

    10/1994 - 12/1999

    Assistant Research Scientist

    University of Maryland, Goddard Space Flight Center

    Planetary science investigations of solar system atmospheres in groundbased infrared investigations of Venus, Mars, Jupiter, Saturn, Titan.

    10/1991 - 9/1994

    Resident Research Associate

    National Research Council, National Academy of Sciences, Goddard Space Flight Center

    Planetary science investigations of solar system atmospheres in groundbased infrared investigations of Jupiter aurora.

    Teaching Experience

    2015 Spring -- Taught Introduction to Solar System Astronomy for non-majors at UMD.

    2002 Spring -- Taught Introductory Physics at Montogomery Community College in Silver Spring, MD.

    2000 through present: regularly make interactive presentations on space science to audiences of ~300 at a time (up to 1700). Co-developer of three education modules for Earth and space sciences at K-13 range, inclduing adoption by Washington, DC as 6th-grade space science curriculum in 2005.

    Education

    1992, PhD, The Johns Hopkins University, Baltimore, MD (requirements completed Sep 1991). "The Jovian Ultraviolet Aurora Observed with the IUE Spacecraft: Brightness and Color Distribution with Longitude", advisor H. Warren Moos.

    1987, MA, The Johns Hopkins University, Baltimore, MD.

    1984, BA, Washington University in St. Louis. Major: physics, minor: mathematics.

    Professional Societies

    Division for Planetary Sciences, American Astronomical Society, 1992 - Present
    American Geophysical Union, 1992 - Present
    American Association for the Advancement of Science, 2012 - Present
    Folklore Society of Greater Washington, 1998 - Present
    Lifetime member, At-Large Board member
    National Storytelling Network, 2000 - Present

    Professional Service

    NASA Extrasolar Research Program proposal review, Sub-panel chair, twice

    NASA Mars Fundamental Research Program proposal review

    NASA Planetary Atmospheres Program proposal review

    NASA Planetary MIssion Data Analysis Program proposal review

    NCESSE Student Spaceflight Experiments Program proposal review, panel chair, 10 times

    1994 DPS Meeting, local organizing committee member

    Manuscript reviewer for Icarus, Journal of Geophysical Research, Technical Soaring

    Awards

    2013, NASA Award for Exceptional Achievement For Science (Team, LRO)

    2010 NASA Group Achievement Award, GSFC Middle School Week

    2009 NASA Group Achievement Award: EPOXI Mission

    2009 NASA/GSFC Solar System Exploration Division Peer Award

    1991–1994 NAS/NRC Research Associate

    Grants

    04/02/2014 - 04/01/2017 Planetary Astronomy Program, NASA

    Remote Exploration of Mars Stable Isotopes: a Sign of the Missing Atmosphere

    ; Principal Investigator
    10/01/2012 - 09/30/2015 Planetary Atmospheres Program, NASA

    Variability in Jupiter's Aurora from Multi-decadal Infrared Data

    ; Principal Investigator
    10/01/2011 - 09/30/2012 Planetary Astronomy Program, NASA

    Remote Exploration of Mars Atmosphere in the Era of Mars Science Laboratory

    ; Principal Investigator
    08/15/2011 - 09/30/2016 Lunar Reconnaissance Orbiter, NASA Goddard Space Flight Center

    LEND Investigations of Lunar Volatiles

    ; scientific collaborator
    01/02/2008 - 07/01/2011 Discovery Program, NASA

    EPOXI: Extrasolar Planetary Observation and Characterization and Deep Impact Extended Investigation

    ; co-investigator and EPO lead for EPOCh mission component

    Other Professional Information

    Co-PI of final IUE Key Project, “Completion of IUE Jovian Studies”, with R. M. Prangé.

    Leadership team for European Southern Observatory and IUE Shoemaker-Levy 9 science teams.

    Member of NASA/IRTF SL9 science team.

    Professional storyteller, conveying scientific information and awareness through story.
     

    Publications

    Refereed

    Su, J. J., T. P. Mcclanahan, A. M. Parsons, et al. R. Sagdeev, W. Boynton, G. Chin, T. A. Livengood, R. D. Starr, and D. Hamara. 2018. "Calibration and Validation of the Lunar Exploration Neutron Detector (LEND) Observations for the Study of the Moon's Volatiles." Space Science Reviews, (Submitted)

    Livengood, T., I. Mitrofanov, G. Chin, et al. W. Boynton, J. Bodnarik, L. Evans, K. Harshman, M. Litvak, T. McClanahan, R. Sagdeev, A. Sanin, R. Starr, and J. Su. 2018. "Background and lunar neutron populations detected by LEND and average concentration of near-surface hydrogen near the Moon's poles." Planetary and Space Science, 162: 89–104 [10.1016/j.pss.2017.12.004]

    Starr, R. D., M. L. Litvak, N. E. Petro, et al. I. G. Mitrofanov, W. V. Boynton, G. Chin, T. A. Livengood, T. P. McClanahan, A. B. Sanin, R. Z. Sagdeev, and J. J. Su. 2018. "Crater age and hydrogen content in lunar regolith from LEND neutron data." Planetary and Space Science, 162: 105–112 [10.1016/j.pss.2017.08.001]

    Sanin, A., I. Mitrofanov, M. Litvak, et al. B. Bakhtin, J. Bodnarik, W. Boynton, G. Chin, L. Evans, K. Harshman, F. Fedosov, D. Golovin, A. Kozyrev, T. Livengood, A. Malakhov, T. McClanahan, M. Mokrousov, R. Starr, R. Sagdeev, V. Tret'yakov, and A. Vostrukhin. 2017. "Hydrogen distribution in the lunar polar regions." Icarus, 283: 20-30 [10.1016/j.icarus.2016.06.002]

    Litvak, M., I. Mitrofanov, A. Sanin, et al. B. Bakhtin, J. Bodnarik, W. Boynton, G. Chin, L. Evans, K. Harshman, T. Livengood, A. Malakhov, M. Mokrousov, Т. McClanahan, R. Sagdeev, and R. Starr. 2016. "The variations of neutron component of lunar radiation background from LEND/LRO observations." Planetary and Space Science, 122: 53-65 [10.1016/j.pss.2016.01.006]

    Mcclanahan, T. P., I. G. Mitrofanov, W. V. Boynton, et al. G. Chin, J. Bodnarik, G. Droege, L. G. Evans, D. Golovin, D. Hamara, K. Harshman, M. Litvak, T. A. Livengood, A. Malakhov, E. Mazarico, G. Milikh, G. Nandikotkur, A. M. Parsons, R. Sagdeev, A. Sanin, R. D. Starr, J. J. Su, and J. Murray. 2015. "Evidence for the sequestration of hydrogen-bearing volatiles towards the Moon’s southern pole-facing slopes." Icarus, 255: 88-99 [10.1016/j.icarus.2014.10.001]

    Livengood, T., G. Chin, R. Sagdeev, et al. I. Mitrofanov, W. Boynton, L. Evans, M. Litvak, T. McClanahan, A. Sanin, R. Starr, and J. Su. 2015. "Moonshine: Diurnally varying hydration through natural distillation on the Moon, detected by the Lunar Exploration Neutron Detector (LEND)." Icarus, 255: 100-115 [10.1016/j.icarus.2015.04.004]

    Stangier, T., T. Hewagama, M. Sornig, et al. G. Sonnabend, T. Kostiuk, M. Herrmann, and T. Livengood. 2015. "Thermal structure of Venus׳ nightside mesosphere as observed by infrared heterodyne spectroscopy at 10μm." Planetary and Space Science, 113-114: 359-368 [10.1016/j.pss.2015.01.021]

    Tobie, G., N. Teanby, A. Coustenis, et al. R. Jaumann, F. Raulin, J. Schmidt, N. Carrasco, A. Coates, D. Cordier, R. De Kok, W. Geppert, J.-P. Lebreton, A. Lefevre, T. Livengood, K. Mandt, G. Mitri, F. Nimmo, C. Nixon, L. Norman, R. Pappalardo, F. Postberg, S. Rodriguez, D. Schulze-Makuch, J. Soderblom, A. Solomonidou, K. Stephan, E. Stofan, E. Turtle, R. Wagner, R. West, and J. Westlake. 2014. "Science goals and mission concept for the future exploration of Titan and Enceladus." Planetary and Space Science, 104: 59-77 [10.1016/j.pss.2014.10.002]

    Sonnabend, G., D. Stupar, M. Sornig, et al. T. Stangier, T. Kostiuk, and T. Livengood. 2013. "A Search for Methane in the Atmosphere of Mars using Ground-Based Mid Infrared Heterodyne Spectroscopy." J. Mol. Spectrosc. 291, 98-101: 10.1016/2013.05.009.

    Fujii, Y., H. Kawahara, Y. Suto, et al. S. Fukuda, T. Nakajima, T. A. Livengood, and E. L. Turner. 2013. "ERRATUM: “COLORS OF A SECOND EARTH. II. EFFECT OF CLOUDS ON PHOTOMETRIC CHARACTERIZATION OF EARTH-LIKE EXOPLANETS” (2011, ApJ, 738, 184)." The Astrophysical Journal, 771 (2): 139 [10.1088/0004-637x/771/2/139]

    Sonnabend, G., P. Krotz, F. Schmuülling, et al. T. Kostiuk, J. Goldstein, M. Sornig, D. Stupar, T. A. Livengood, T. Hewagama, K. Fast, and A. Mahieux. 2012. "Thermospheric/Mesospheric Temperatures on Venus: Results from Ground-Based High-Resolution Spectroscopy of CO2 in 1990/91 and Comparison to Results from 2009 and between Other Techniques." Icarus, 217: 856-862 [10.1016/j.icarus.2011.07.015]

    McLaughlin, S., B. Carcich, D. Deming, et al. T. Livengood, K. Klaasen, and D. Wellnitz. 2012. "EPOXI Mars Obs - HRII Raw Spectra V1.0." NASA Planetary Data System, 8215:

    McLaughlin, S., B. Carcich, D. Deming, et al. T. Livengood, K. Klaasen, and D. Wellnitz. 2012. "EPOXI Mars Obs - HRIV Raw Images V1.0." NASA Planetary Data System, 8221:

    McLaughlin, S., B. Carcich, D. Deming, et al. T. Livengood, K. Klaasen, and D. Wellnitz. 2012. "EPOXI Mars Obs - HRIV Calibrated Images V1.0." NASA Planetary Data System, 8227:

    McLaughlin, S., B. Carcich, D. Deming, et al. T. Livengood, K. Klaasen, and D. Wellnitz. 2012. "EPOXI Mars Obs - MRI Raw Images V1.0." NASA Planetary Data System, 8233:

    McLaughlin, S., B. Carcich, D. Deming, et al. T. Livengood, K. Klaasen, and D. Wellnitz. 2012. "EPOXI Mars Obs - MRI Calibrated Images V1.0." NASA Planetary Data System, 8234:

    Sornig, M., T. Livengood, G. Sonnabend, D. Stupar, and P. Kroetz. 2012. "Direct wind measurements from November 2007 in Venus’ upper atmosphere using ground-based heterodyne spectroscopy of CO2 at 10μm wavelength." Icarus, 217 (2): 863-874 [10.1016/j.icarus.2011.03.019]

    Fast, K. E., T. Kostiuk, T. A. Livengood, T. Hewagama, and J. Annen. 2011. "Modification of Jupiter's stratosphere three weeks after the 2009 impact." Icarus, 213: 195 [Full Text (Link)] [10.1016/j.icarus.2011.02.008]

    Ballard, S., J. L. Christiansen, D. Charbonneau, et al. D. Deming, M. J. Holman, M. F. A'Hearn, D. D. Wellnitz, R. K. Barry, M. J. Kuchner, T. A. Livengood, T. Hewagama, J. M. Sunshine, D. L. Hampton, C. M. Lisse, S. Seager, and J. F. Veverka. 2011. "A Search for Additional Planets in Five of the Exoplanetary Systems Studied by the NASA EPOXI Mission." The Astrophysical Journal, 732: 41 [Full Text (Link)] [10.1088/0004-637X/732/1/41]

    Christiansen, J. L., S. Ballard, D. Charbonneau, et al. D. Deming, M. J. Holman, N. Madhusudhan, S. Seager, D. D. Wellnitz, R. K. Barry, T. A. Livengood, T. Hewagama, D. L. Hampton, C. M. Lisse, and M. F. A'Hearn. 2011. "System Parameters, Transit Times, and Secondary Eclipse Constraints of the Exoplanet Systems HAT-P-4, TrES-2, TrES-3, and WASP-3 from the NASA EPOXI Mission of Opportunity." The Astrophysical Journal, 726: 94 [Full Text (Link)] [10.1088/0004-637X/726/2/94]

    Crow, C. A., L. A. McFadden, T. Robinson, et al. V. S. Meadows, T. A. Livengood, T. Hewagama, R. K. Barry, L. D. Deming, C. M. Lisse, and D. Wellnitz. 2011. "Views from EPOXI: Colors in Our Solar System as an Analog for Extrasolar Planets." The Astrophysical Journal, 729: 130 [Full Text (Link)] [10.1088/0004-637X/729/2/130]

    Cowan, N. B., T. Robinson, T. A. Livengood, et al. D. Deming, E. Agol, M. F. A'Hearn, D. Charbonneau, C. M. Lisse, V. S. Meadows, S. Seager, A. L. Shields, and D. D. Wellnitz. 2011. "ROTATIONAL VARIABILITY OF EARTH'S POLAR REGIONS: IMPLICATIONS FOR DETECTING SNOWBALL PLANETS." The Astrophysical Journal, 731 (1): 76 [10.1088/0004-637x/731/1/76]

    Fast, K. E., T. Kostiuk, T. A. Livengood, T. Hewagama, and J. Annen. 2011. "Modification of Jupiter’s stratosphere three weeks after the 2009 impact." Icarus, 213 (1): 195-200 [10.1016/j.icarus.2011.02.008]

    Robinson, T. D., V. S. Meadows, D. Crisp, et al. D. Deming, M. F. A'Hearn, D. Charbonneau, T. A. Livengood, S. Seager, R. K. Barry, T. Hearty, T. Hewagama, C. M. Lisse, L. A. Mcfadden, and D. D. Wellnitz. 2011. "Earth as an Extrasolar Planet: Earth Model Validation Using EPOXI Earth Observations." Astrobiology, 11 (5): 393-408 [10.1089/ast.2011.0642]

    Fujii, Y., H. Kawahara, Y. Suto, et al. S. Fukuda, T. Nakajima, T. A. Livengood, and E. L. Turner. 2011. "COLORS OF A SECOND EARTH. II. EFFECTS OF CLOUDS ON PHOTOMETRIC CHARACTERIZATION OF EARTH-LIKE EXOPLANETS." The Astrophysical Journal, 738 (2): 184 [10.1088/0004-637x/738/2/184]

    Livengood, T. A., L. D. Deming, M. F. A'Hearn, et al. D. Charbonneau, T. Hewagama, C. M. Lisse, L. A. McFadden, V. S. Meadows, T. D. Robinson, S. Seager, and D. D. Wellnitz. 2011. "Properties of an Earth-Like Planet Orbiting a Sun-Like Star: Earth Observed by the EPOXI Mission." Astrobiology, 11 (9): 907-930 [10.1089/ast.2011.0614]

    Ballard, S., J. L. Christiansen, D. Charbonneau, et al. D. Deming, M. J. Holman, D. Fabrycky, M. F. A'Hearn, D. D. Wellnitz, R. K. Barry, M. J. Kuchner, T. A. Livengood, T. Hewagama, J. M. Sunshine, D. L. Hampton, C. M. Lisse, S. Seager, and J. F. Veverka. 2010. "A Search for Additional Planets in the NASA EPOXI Observations of the Exoplanet System GJ 436." The Astrophysical Journal, 716: 1047 [Full Text (Link)] [10.1088/0004-637X/716/2/1047]

    Kostiuk, T., T. Hewagama, K. Fast, et al. T. A. Livengood, J. Annen, D. Buhl, G. Sonnabend, F. Schmülling, J. Delgado, and R. K. Achterberg. 2010. "High Spectral Resolution Infrared Studies of Titan: Winds, Temperature and Composition." Planetary and Space Science, 58: 715-1723 [10.1016/2010.08.004]

    Coustenis, A., S. K. Atreya, T. Balint, et al. R. H. Brown, M. K. Dougherty, F. Ferri, M. Fulchignoni, D. Gautier, R. A. Gowen, C. A. Griffith, L. I. Gurvits, R. Jaumann, Y. Langevin, M. R. Leese, J. I. Lunine, C. P. McKay, X. Moussas, I. Müller-Wodarg, F. Neubauer, T. C. Owen, F. Raulin, E. C. Sittler, F. Sohl, C. Sotin, G. Tobie, T. Tokano, E. P. Turtle, J. Wahlund, J. H. Waite, K. H. Baines, J. Blamont, A. J. Coates, I. Dandouras, T. Krimigis, E. Lellouch, R. D. Lorenz, A. Morse, C. C. Porco, M. Hirtzig, J. Saur, T. Spilker, J. C. Zarnecki, E. Choi, N. Achilleos, R. Amils, P. Annan, D. H. Atkinson, Y. Bénilan, C. Bertucci, B. Bézard, G. L. Bjoraker, M. Blanc, L. Boireau, J. Bouman, M. Cabane, M. T. Capria, E. Chassefière, P. Coll, M. Combes, J. F. Cooper, A. Coradini, F. Crary, T. Cravens, I. A. Daglis, E. de Angelis, C. de Bergh, I. de Pater, C. Dunford, G. Durry, O. Dutuit, D. Fairbrother, F. M. Flasar, A. D. Fortes, R. Frampton, M. Fujimoto, M. Galand, O. Grasset, M. Grott, T. Haltigin, A. Herique, F. Hersant, H. Hussmann, W. Ip, R. Johnson, E. Kallio, S. Kempf, M. Knapmeyer, W. Kofman, R. Koop, T. Kostiuk, N. Krupp, M. Küppers, H. Lammer, L. Lara, P. Lavvas, S. Le Mouélic, S. Lebonnois, S. Ledvina, J. Li, T. A. Livengood, R. M. Lopes, J. Lopez-Moreno, D. Luz, P. R. Mahaffy, U. Mall, J. Martinez-Frias, B. Marty, T. McCord, C. Menor Salvan, A. Milillo, D. G. Mitchell, R. Modolo, O. Mousis, M. Nakamura, C. D. Neish, C. A. Nixon, D. Nna Mvondo, G. Orton, M. Paetzold, J. Pitman, S. Pogrebenko, W. Pollard, O. Prieto-Ballesteros, P. Rannou, K. Reh, L. Richter, F. T. Robb, R. Rodrigo, S. Rodriguez, P. Romani, M. Ruiz Bermejo, E. T. Sarris, P. Schenk, B. Schmitt, N. Schmitz, D. Schulze-Makuch, K. Schwingenschuh, A. Selig, B. Sicardy, L. Soderblom, L. J. Spilker, D. Stam, A. Steele, K. Stephan, D. F. Strobel, K. Szego, C. Szopa, R. Thissen, M. G. Tomasko, D. Toublanc, H. Vali, I. Vardavas, V. Vuitton, R. A. West, R. Yelle, and E. F. Young. 2009. "TandEM: Titan and Enceladus mission." Experimental Astronomy, 23: 893 [Full Text (Link)] [10.1007/s10686-008-9103-z]

    Cowan, N. B., E. Agol, V. S. Meadows, et al. T. Robinson, T. A. Livengood, D. Deming, C. M. Lisse, M. F. A'Hearn, D. D. Wellnitz, S. Seager, and D. Charbonneau. 2009. "ALIEN MAPS OF AN OCEAN-BEARING WORLD." The Astrophysical Journal, 700 (2): 915-923 [10.1088/0004-637x/700/2/915]

    Fast, K. E., T. Kostiuk, F. Lefèvre, et al. T. Hewagama, T. A. Livengood, J. D. Delgado, J. Annen, and G. Sonnabend. 2009. "Comparison of HIPWAC and Mars Express SPICAM observations of ozone on Mars 2006–2008 and variation from 1993 IRHS observations." Icarus, 203 (1): 20-27 [10.1016/j.icarus.2009.05.005]

    Sornig, M., T. Livengood, G. Sonnabend, et al. P. Kroetz, D. Stupar, T. Kostiuk, and R. Schieder. 2008. "Venus upper atmosphere winds from heterodyne spectroscopy of CO2 at 10µm wavelength." Planetary and Space Sciences, 56: 1399-1406.

    Christiansen, J. L., D. Charbonneau, M. F. A'Hearn, et al. D. Deming, M. J. Holman, S. Ballard, D. T. Weldrake, R. K. Barry, M. J. Kuchner, T. A. Livengood, J. Pedelty, A. Schultz, T. Hewagama, J. M. Sunshine, D. D. Wellnitz, D. L. Hampton, C. M. Lisse, S. Seager, and J. F. Veverka. 2008. "The NASA EPOXI mission of opportunity to gather ultraprecise photometry of known transiting exoplanets." IAU, 4 (S253): 301 [10.1017/s1743921308026525]

    Ballard, S., D. Charbonneau, M. F. A'Hearn, et al. D. Deming, M. J. Holman, J. L. Christiansen, D. T. Weldrake, R. K. Barry, M. J. Kuchner, T. A. Livengood, J. Pedelty, A. Schultz, T. Hewagama, J. M. Sunshine, D. D. Wellnitz, D. L. Hampton, C. M. Lisse, S. Seager, and J. F. Veverka. 2008. "Preliminary Results on HAT-P-4, TrES-3, XO-2, and GJ 436 from the NASA EPOXI Mission." IAU, 4 (S253): 470 [10.1017/s1743921308026963]

    Sornig, M., T. Livengood, G. Sonnabend, et al. P. Kroetz, D. Stupar, T. Kostiuk, and R. Schieder. 2008. "Venus upper atmosphere winds from ground-based heterodyne spectroscopy of CO2 at wavelength." Planetary and Space Science, 56 (10): 1399-1406 [10.1016/j.pss.2008.05.006]

    Kostiuk, T., T. A. Livengood, K. E. Fast, and T. Hewagama. 2007. "Strong Solar Control of Infrared Aurora on Jupiter." Proc. Magnetospheres of the Outer Planets Meeting, San Antonio Texas, June 25-29, 2007, [Full Text (Link)]

    Fast, K., T. Kostiuk, F. Espenak, et al. J. Annen, D. Buhl, T. Hewagama, M. F. A'Hearn, D. Zipoy, T. A. Livengood, G. Sonnabend, and F. Schmulling. 2006. "Ozone Abundance on Mars from Infrared Heterodyne Spectra I: Acquisition, Retrieval, and Anticorrelation with Water Vapor." Icarus, 181: 419-431 [10.1016/j.icarus]

    Fast, K., T. Kostiuk, T. Hewagama, et al. M. F. A'Hearn, T. A. Livengood, F. Lebonnois, and F. Lefevre. 2006. "Ozone abundance on Mars from infrared heterodyne spectra II: Validating photochemical models." Icarus, 183: 396-402 [10.1016/j.icarus.2006.03.012]

    Luz, D., T. Civeit, R. Courtin, et al. J. P. Lebreton, D. Gautier, O. Witasse, A. Kaufer, F. Ferri, L. Lara, T. Livengood, and T. Kostiuk. 2006. "Characterization of zonal winds in the stratosphere of Titan with UVES, II: Observations coordinated with the Huygens Probe entry." JGR-Planets, 111: E08S90 [10.1029/2005JE002617]

    Fast, K., T. Kostiuk, T. Hewagama, et al. M. F. A'Hearn, T. A. Livengood, S. Lebonnois, and F. Lefèvre. 2006. "Ozone abundance on Mars from infrared heterodyne spectra." Icarus, 183 (2): 396-402 [10.1016/j.icarus.2006.03.012]

    Witasse, O., J.-P. Lebreton, M. K. Bird, et al. R. Dutta-Roy, W. M. Folkner, R. A. Preston, S. W. Asmar, L. I. Gurvits, S. V. Pogrebenko, I. M. Avruch, R. M. Campbell, H. E. Bignall, M. A. Garrett, H. J. van Langevelde, S. M. Parsley, C. Reynolds, A. Szomoru, J. E. Reynolds, C. J. Phillips, R. J. Sault, A. K. Tzioumis, F. Ghigo, G. Langston, W. Brisken, J. D. Romney, A. Mujunen, J. Ritakari, S. J. Tingay, R. G. Dodson, C. G. van't Klooster, T. Blancquaert, A. Coustenis, E. Gendron, B. Sicardy, M. Hirtzig, D. Luz, A. Negrao, T. Kostiuk, T. A. Livengood, M. Hartung, I. de Pater, M. Ádámkovics, R. D. Lorenz, H. Roe, E. Schaller, M. Brown, A. H. Bouchez, C. A. Trujillo, B. J. Buratti, L. Caillault, T. Magin, A. Bourdon, and C. Laux. 2006. "Overview of the coordinated ground-based observations of Titan during the Huygens mission." Journal of Geophysical Research, 111 (E7): E07S01 [10.1029/2005je002640]

    Kostiuk, T., T. A. Livengood, G. Sonnabend, et al. K. E. Fast, T. Hewagama, K. Murakawa, A. T. Tokunaga, J. Annen, D. Buhl, F. Schmülling, D. Luz, and O. Witasse. 2006. "Stratospheric global winds on Titan at the time of Huygens descent." Journal of Geophysical Research, 111 (E7): E07S03 [10.1029/2005je002630]

    Livengood, T., T. Kostiuk, G. Sonnabend, et al. J. N. Annen, K. E. Fast, A. Tokunaga, K. Murakawa, T. Hewagama, F. Schmulling, and R. Schieder. 2006. "High-resolution infrared spectroscopy of ethane in Titan's stratosphere in the Huygens epoch." J. Geophys. Res.-Planets, 111: E11S90 [10.1029/2005JE002669]

    Kostiuk, T., T. Livengood, T. Hewagama, et al. G. Sonnabend, K. E. Fast, K. Murakawa, A. T. Tokunaga, J. Annen, D. Buhl, and F. Schmulling. 2005. "Titan’s Stratospheric Zonal Wind, Temperature and Ethane Abundance a Year Prior to Huygens Insertion." Geophys. Res. Lett., 32: L22205 [10.1029/2005GL023897]

    Kostiuk, T., T. A. Livengood, T. Hewagama, et al. G. Sonnabend, K. E. Fast, K. Murakawa, A. T. Tokunaga, J. Annen, D. Buhl, and F. Schmülling. 2005. "Titan's stratospheric zonal wind, temperature, and ethane abundance a year prior to Huygens insertion." Geophysical Research Letters, 32 (22): L22205 [10.1029/2005gl023897]

    Livengood, T. A. 2002. "Improved Determination of Ethane (C2H6) Abundance in Titan's Stratosphere." Icarus, 157 (1): 249-253 [10.1006/icar.2002.6823]

    Kostiuk, T., K. E. Fast, T. A. Livengood, et al. T. Hewagama, J. J. Goldstein, F. Espenak, and D. Buhl. 2001. "Direct measurement of winds on Titan." Geophysical Research Letters, 28 (12): 2361-2364 [10.1029/2000gl012617]

    Fernandez, Y., T. A. Livengood, and T. Kostiuk. 2000. "Physical Properties of the Nucleus of Comet 2P/Encke." Icarus, 147 (1): 145-160 [10.1006/icar.2000.6431]

    Livengood, T., K. Fast, T. Kostiuk, et al. F. Espenak, D. Buhl, J. Goldstein, T. Hewagama, and K. Ro. 1999. "Refraction by Earth's Atmosphere near 12 Microns." Publications of the Astronomical Society of the Pacific, 111 (758): 512-521 [10.1086/316347]

    Prangé, R., S. Maurice, W. M. Harris, D. Rego, and T. Livengood. 1997. "Comparison of IUE and HST diagnostics of the Jovian Aurorae." Journal of Geophysical Research, 102 (E4): 9289 [10.1029/96je03304]

    Lisse, C. M., Y. R. Fernández, M. F. A'hearn, et al. T. Kostiuk, T. A. Livengood, H. U. Käufl, W. F. Hoffmann, A. Dayal, M. E. Ressler, M. S. Hanner, G. G. Fazio, J. L. Hora, S. B. Peschke, E. Grün, and L. K. Deutsch. 1997. "Infrared Observations Of Dust Emission From Comet Hale-Bopp." Earth, Moon, and Planets, 78 (1/3): 251-257 [10.1023/a:1006261303055]

    Kostiuk, T., K. Fast, T. A. Livengood, et al. J. Goldstein, T. Hewagama, D. Buhl, F. Espenak, and K. H. Ro. 1997. "Ethane abundance on Titan." Planetary and Space Science, 45 (8): 931-939 [10.1016/s0032-0633(97)00086-x]

    Mosser, B., P. Galdemard, P. Lagage, et al. E. Pantin, M. Sauvage, P. Lognonné, D. Gautier, F. Billebaud, T. Livengood, and H. Käufl. 1996. "Impact Seismology: A Search for Primary Pressure Waves Following Impacts A and H." Icarus, 121 (2): 331-340 [10.1006/icar.1996.0091]

    Kostiuk, T., D. Buhl, F. Espenak, et al. P. Romani, G. Bjoraker, K. Fast, T. Livengood, and D. Zipoy. 1996. "Stratospheric Ammonia on Jupiter after the SL9 Collision." Icarus, 121 (2): 431-441 [10.1006/icar.1996.0098]

    Orton, G., M. A'Hearn, K. Baines, et al. D. Deming, T. Dowling, J. Goguen, C. Griffith, H. Hammel, W. Hoffmann, D. Hunten, and A. Et. 1995. "Collision of comet Shoemaker-Levy 9 with Jupiter observed by the NASA infrared telescope facility." Science, 267 (5202): 1277-1282 [10.1126/science.7871423]

    McGrath, M., D. Hall, P. Matheson, et al. H. Weaver, J. Trauger, T. Smith, N. Thomas, R. Gladstone, N. Schneider, W. Harris, and A. Et. 1995. "Response of the Io plasma torus to comet Shoemaker-Levy 9." Science, 267 (5202): 1313-1317 [10.1126/science.7871429]

    Ballester, G. E., W. M. Harris, G. R. Gladstone, et al. J. T. Clarke, R. Prangé, P. D. Feldman, M. R. Combi, C. Emerich, D. F. Strobel, A. Talavera, S. A. Budzien, M. B. Vincent, T. A. Livengood, K. L. Jessup, M. A. McGrath, D. T. Hall, J. M. Ajello, L. ben Jaffel, D. Rego, G. Fireman, L. Woodney, S. Miller, and X. Liu. 1995. "Far-UV emissions from the SL9 impacts with Jupiter." Geophysical Research Letters, 22 (17): 2425-2428 [10.1029/95gl02422]

    Deleuil, M., C. Gry, A.-M. Lagrange-Henri, et al. A. Vidal-Madjar, H. Beust, R. Ferlet, H. Moos, T. Livengood, D. Ziskin, and P. Feldman. 1993. "The Beta Pictoris circumstellar disk. XV - Highly ionized species near Beta Pictoris." Astronomy & Astrophysics, 267: 187-193.

    Prangé, R., P. Zarka, G. E. Ballester, et al. T. A. Livengood, L. Denis, T. Carr, F. Reyes, S. J. Bame, and H. W. Moos. 1993. "Correlated variations of UV and radio emissions during an outstanding Jovian auroral event." Journal of Geophysical Research, 98 (E10): 18779 [10.1029/93je01802]

    Livengood, T. A., T. Kostiuk, F. Espenak, and J. J. Goldstein. 1993. "Temperature and abundances in the Jovian auroral stratosphere: 1. Ethane as a probe of the millibar region." Journal of Geophysical Research, 98 (E10): 18813 [10.1029/93je01043]

    Kostiuk, T., P. Romani, F. Espenak, T. A. Livengood, and J. J. Goldstein. 1993. "Temperature and abundances in the Jovian auroral stratosphere: 2. Ethylene as a probe of the microbar region." Journal of Geophysical Research, 98 (E10): 18823 [10.1029/93je01332]

    Livengood, T. 1992. "The Jovian ultraviolet aurora observed with the IUE spacecraft: Brightness and color distribution with longitude."

    Livengood, T., H. Moos, G. Ballester, and R. Prangé. 1992. "Jovian ultraviolet auroral activity, 1981–1991." Icarus, 97 (1): 26-45 [10.1016/0019-1035(92)90055-c]

    Livengood, T. A., D. F. Strobel, and H. W. Moos. 1990. "Long-term study of longitudinal dependence in primary particle precipitation in the north Jovian aurora." Journal of Geophysical Research, 95 (A7): 10375 [10.1029/ja095ia07p10375]

    Livengood, T. A., and H. W. Moos. 1990. "Jupiter's north and south polar aurorae with IUE data." Geophysical Research Letters, 17 (12): 2265-2268 [10.1029/gl017i012p02265]

    Brief Bio

    Observational planetary astronomer using groundbased mid-infrared and space-based UV/visible/NIR techniques to investigate atmospheres of the major planets. Investigate volatiles on the Moon using neutron remote-sensing.

    Publications

    Refereed

    Su, J. J., T. P. Mcclanahan, A. M. Parsons, et al. R. Sagdeev, W. Boynton, G. Chin, T. A. Livengood, R. D. Starr, and D. Hamara. 2018. "Calibration and Validation of the Lunar Exploration Neutron Detector (LEND) Observations for the Study of the Moon's Volatiles." Space Science Reviews (Submitted)

    Livengood, T., I. Mitrofanov, G. Chin, et al. W. Boynton, J. Bodnarik, L. Evans, K. Harshman, M. Litvak, T. McClanahan, R. Sagdeev, A. Sanin, R. Starr, and J. Su. 2018. "Background and lunar neutron populations detected by LEND and average concentration of near-surface hydrogen near the Moon's poles." Planetary and Space Science 162 89–104 [10.1016/j.pss.2017.12.004]

    Starr, R. D., M. L. Litvak, N. E. Petro, et al. I. G. Mitrofanov, W. V. Boynton, G. Chin, T. A. Livengood, T. P. McClanahan, A. B. Sanin, R. Z. Sagdeev, and J. J. Su. 2018. "Crater age and hydrogen content in lunar regolith from LEND neutron data." Planetary and Space Science 162 105–112 [10.1016/j.pss.2017.08.001]

    Sanin, A., I. Mitrofanov, M. Litvak, et al. B. Bakhtin, J. Bodnarik, W. Boynton, G. Chin, L. Evans, K. Harshman, F. Fedosov, D. Golovin, A. Kozyrev, T. Livengood, A. Malakhov, T. McClanahan, M. Mokrousov, R. Starr, R. Sagdeev, V. Tret'yakov, and A. Vostrukhin. 2017. "Hydrogen distribution in the lunar polar regions." Icarus 283 20-30 [10.1016/j.icarus.2016.06.002]

    Litvak, M., I. Mitrofanov, A. Sanin, et al. B. Bakhtin, J. Bodnarik, W. Boynton, G. Chin, L. Evans, K. Harshman, T. Livengood, A. Malakhov, M. Mokrousov, Т. McClanahan, R. Sagdeev, and R. Starr. 2016. "The variations of neutron component of lunar radiation background from LEND/LRO observations." Planetary and Space Science 122 53-65 [10.1016/j.pss.2016.01.006]

    Mcclanahan, T. P., I. G. Mitrofanov, W. V. Boynton, et al. G. Chin, J. Bodnarik, G. Droege, L. G. Evans, D. Golovin, D. Hamara, K. Harshman, M. Litvak, T. A. Livengood, A. Malakhov, E. Mazarico, G. Milikh, G. Nandikotkur, A. M. Parsons, R. Sagdeev, A. Sanin, R. D. Starr, J. J. Su, and J. Murray. 2015. "Evidence for the sequestration of hydrogen-bearing volatiles towards the Moon’s southern pole-facing slopes." Icarus 255 88-99 [10.1016/j.icarus.2014.10.001]

    Livengood, T., G. Chin, R. Sagdeev, et al. I. Mitrofanov, W. Boynton, L. Evans, M. Litvak, T. McClanahan, A. Sanin, R. Starr, and J. Su. 2015. "Moonshine: Diurnally varying hydration through natural distillation on the Moon, detected by the Lunar Exploration Neutron Detector (LEND)." Icarus 255 100-115 [10.1016/j.icarus.2015.04.004]

    Stangier, T., T. Hewagama, M. Sornig, et al. G. Sonnabend, T. Kostiuk, M. Herrmann, and T. Livengood. 2015. "Thermal structure of Venus׳ nightside mesosphere as observed by infrared heterodyne spectroscopy at 10μm." Planetary and Space Science 113-114 359-368 [10.1016/j.pss.2015.01.021]

    Tobie, G., N. Teanby, A. Coustenis, et al. R. Jaumann, F. Raulin, J. Schmidt, N. Carrasco, A. Coates, D. Cordier, R. De Kok, W. Geppert, J.-P. Lebreton, A. Lefevre, T. Livengood, K. Mandt, G. Mitri, F. Nimmo, C. Nixon, L. Norman, R. Pappalardo, F. Postberg, S. Rodriguez, D. Schulze-Makuch, J. Soderblom, A. Solomonidou, K. Stephan, E. Stofan, E. Turtle, R. Wagner, R. West, and J. Westlake. 2014. "Science goals and mission concept for the future exploration of Titan and Enceladus." Planetary and Space Science 104 59-77 [10.1016/j.pss.2014.10.002]

    Sonnabend, G., D. Stupar, M. Sornig, et al. T. Stangier, T. Kostiuk, and T. Livengood. 2013. "A Search for Methane in the Atmosphere of Mars using Ground-Based Mid Infrared Heterodyne Spectroscopy." J. Mol. Spectrosc. 291 98-101 10.1016/2013.05.009.

    Fujii, Y., H. Kawahara, Y. Suto, et al. S. Fukuda, T. Nakajima, T. A. Livengood, and E. L. Turner. 2013. "ERRATUM: “COLORS OF A SECOND EARTH. II. EFFECT OF CLOUDS ON PHOTOMETRIC CHARACTERIZATION OF EARTH-LIKE EXOPLANETS” (2011, ApJ, 738, 184)." The Astrophysical Journal 771 (2): 139 [10.1088/0004-637x/771/2/139]

    Sonnabend, G., P. Krotz, F. Schmuülling, et al. T. Kostiuk, J. Goldstein, M. Sornig, D. Stupar, T. A. Livengood, T. Hewagama, K. Fast, and A. Mahieux. 2012. "Thermospheric/Mesospheric Temperatures on Venus: Results from Ground-Based High-Resolution Spectroscopy of CO2 in 1990/91 and Comparison to Results from 2009 and between Other Techniques." Icarus 217 856-862 [10.1016/j.icarus.2011.07.015]

    McLaughlin, S., B. Carcich, D. Deming, et al. T. Livengood, K. Klaasen, and D. Wellnitz. 2012. "EPOXI Mars Obs - HRII Raw Spectra V1.0." NASA Planetary Data System 8215

    McLaughlin, S., B. Carcich, D. Deming, et al. T. Livengood, K. Klaasen, and D. Wellnitz. 2012. "EPOXI Mars Obs - HRIV Raw Images V1.0." NASA Planetary Data System 8221

    McLaughlin, S., B. Carcich, D. Deming, et al. T. Livengood, K. Klaasen, and D. Wellnitz. 2012. "EPOXI Mars Obs - HRIV Calibrated Images V1.0." NASA Planetary Data System 8227

    McLaughlin, S., B. Carcich, D. Deming, et al. T. Livengood, K. Klaasen, and D. Wellnitz. 2012. "EPOXI Mars Obs - MRI Raw Images V1.0." NASA Planetary Data System 8233

    McLaughlin, S., B. Carcich, D. Deming, et al. T. Livengood, K. Klaasen, and D. Wellnitz. 2012. "EPOXI Mars Obs - MRI Calibrated Images V1.0." NASA Planetary Data System 8234

    Sornig, M., T. Livengood, G. Sonnabend, D. Stupar, and P. Kroetz. 2012. "Direct wind measurements from November 2007 in Venus’ upper atmosphere using ground-based heterodyne spectroscopy of CO2 at 10μm wavelength." Icarus 217 (2): 863-874 [10.1016/j.icarus.2011.03.019]

    Fast, K. E., T. Kostiuk, T. A. Livengood, T. Hewagama, and J. Annen. 2011. "Modification of Jupiter's stratosphere three weeks after the 2009 impact." Icarus 213 195 [Full Text (Link)] [10.1016/j.icarus.2011.02.008]

    Ballard, S., J. L. Christiansen, D. Charbonneau, et al. D. Deming, M. J. Holman, M. F. A'Hearn, D. D. Wellnitz, R. K. Barry, M. J. Kuchner, T. A. Livengood, T. Hewagama, J. M. Sunshine, D. L. Hampton, C. M. Lisse, S. Seager, and J. F. Veverka. 2011. "A Search for Additional Planets in Five of the Exoplanetary Systems Studied by the NASA EPOXI Mission." The Astrophysical Journal 732 41 [Full Text (Link)] [10.1088/0004-637X/732/1/41]

    Christiansen, J. L., S. Ballard, D. Charbonneau, et al. D. Deming, M. J. Holman, N. Madhusudhan, S. Seager, D. D. Wellnitz, R. K. Barry, T. A. Livengood, T. Hewagama, D. L. Hampton, C. M. Lisse, and M. F. A'Hearn. 2011. "System Parameters, Transit Times, and Secondary Eclipse Constraints of the Exoplanet Systems HAT-P-4, TrES-2, TrES-3, and WASP-3 from the NASA EPOXI Mission of Opportunity." The Astrophysical Journal 726 94 [Full Text (Link)] [10.1088/0004-637X/726/2/94]

    Crow, C. A., L. A. McFadden, T. Robinson, et al. V. S. Meadows, T. A. Livengood, T. Hewagama, R. K. Barry, L. D. Deming, C. M. Lisse, and D. Wellnitz. 2011. "Views from EPOXI: Colors in Our Solar System as an Analog for Extrasolar Planets." The Astrophysical Journal 729 130 [Full Text (Link)] [10.1088/0004-637X/729/2/130]

    Cowan, N. B., T. Robinson, T. A. Livengood, et al. D. Deming, E. Agol, M. F. A'Hearn, D. Charbonneau, C. M. Lisse, V. S. Meadows, S. Seager, A. L. Shields, and D. D. Wellnitz. 2011. "ROTATIONAL VARIABILITY OF EARTH'S POLAR REGIONS: IMPLICATIONS FOR DETECTING SNOWBALL PLANETS." The Astrophysical Journal 731 (1): 76 [10.1088/0004-637x/731/1/76]

    Fast, K. E., T. Kostiuk, T. A. Livengood, T. Hewagama, and J. Annen. 2011. "Modification of Jupiter’s stratosphere three weeks after the 2009 impact." Icarus 213 (1): 195-200 [10.1016/j.icarus.2011.02.008]

    Robinson, T. D., V. S. Meadows, D. Crisp, et al. D. Deming, M. F. A'Hearn, D. Charbonneau, T. A. Livengood, S. Seager, R. K. Barry, T. Hearty, T. Hewagama, C. M. Lisse, L. A. Mcfadden, and D. D. Wellnitz. 2011. "Earth as an Extrasolar Planet: Earth Model Validation Using EPOXI Earth Observations." Astrobiology 11 (5): 393-408 [10.1089/ast.2011.0642]

    Fujii, Y., H. Kawahara, Y. Suto, et al. S. Fukuda, T. Nakajima, T. A. Livengood, and E. L. Turner. 2011. "COLORS OF A SECOND EARTH. II. EFFECTS OF CLOUDS ON PHOTOMETRIC CHARACTERIZATION OF EARTH-LIKE EXOPLANETS." The Astrophysical Journal 738 (2): 184 [10.1088/0004-637x/738/2/184]

    Livengood, T. A., L. D. Deming, M. F. A'Hearn, et al. D. Charbonneau, T. Hewagama, C. M. Lisse, L. A. McFadden, V. S. Meadows, T. D. Robinson, S. Seager, and D. D. Wellnitz. 2011. "Properties of an Earth-Like Planet Orbiting a Sun-Like Star: Earth Observed by the EPOXI Mission." Astrobiology 11 (9): 907-930 [10.1089/ast.2011.0614]

    Ballard, S., J. L. Christiansen, D. Charbonneau, et al. D. Deming, M. J. Holman, D. Fabrycky, M. F. A'Hearn, D. D. Wellnitz, R. K. Barry, M. J. Kuchner, T. A. Livengood, T. Hewagama, J. M. Sunshine, D. L. Hampton, C. M. Lisse, S. Seager, and J. F. Veverka. 2010. "A Search for Additional Planets in the NASA EPOXI Observations of the Exoplanet System GJ 436." The Astrophysical Journal 716 1047 [Full Text (Link)] [10.1088/0004-637X/716/2/1047]

    Kostiuk, T., T. Hewagama, K. Fast, et al. T. A. Livengood, J. Annen, D. Buhl, G. Sonnabend, F. Schmülling, J. Delgado, and R. K. Achterberg. 2010. "High Spectral Resolution Infrared Studies of Titan: Winds, Temperature and Composition." Planetary and Space Science 58 715-1723 [10.1016/2010.08.004]

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