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Sciences and Exploration Directorate

Rosemary Margaret Killen

(RESEARCH AST, PLANETARY STUDIES)

Rosemary Margaret Killen's Contact Card & Information.
Email: rosemary.killen@nasa.gov
Phone: 301.286.6574
Org Code: 695
Address:
NASA/GSFC
Mail Code 695
Greenbelt, MD 20771
Employer:
NASA

Brief Bio


Dr. Killen has published extensively on the exospheres of Mercury and the Moon.

Dr. Killen is PI for the SSERVI Team, LEADER, "Lunar Environment and Dynamics for Exploration Research". LEADER is a consortium of 33 scientists in eight institutions studying the environment of the Moon, the effects of human exploration on the lunar environment and the effects of the lunar environment on humans and their systems on and around the Moon.


She was a Participating Scientist on the MESSENGER Mission to Mercury, Deputy PI on the DREAM and DREAM2 teams of the Solar System Exploration Virtual Institute, and Co-I on STROFIO, a mass spectrometer on Bepi-Colombo. She has observed Mercury, the Moon and the Galilean satellites at many major observatories. She is interested in the physics of space weathering and the interactions of the solar wind plasma with the surfaces of planets and satellites to produce exospheres. She has over 100 papers published in the refereed literature and almost 200 abstracts presented at scientific meetings.
 

Research Interests


Research Scientist

Solar System: Solar System

I study the exospheres of the Moon and Mercury via ground-based spectroscopy, space-based ultraviolet spectroscopy, and mathematical modeling using analytical and Monte Carlo  models.

Current Projects


LEADER TEAM of SSERVI (Solar System Exploration and Research Virtual Institute), PI; DREAM2 TEAM of SSERVI (Solar System Exploration and Research Virtual Institute), Deputy PI; Ground-based coronagraphic observations of the lunar sodium exosphere, PI; Team member on the STROFIO mass spectrometer team for the ESA Bepi-Colombo mission to Mercury; Discovery Data Analysis for MESSENGER MASCS Data

Moons

I study planetary exospheres (tenuous atmospheres) throughout our solar system, concentrating on Mercury and the Moon.

Positions/Employment


Research Scientist

NASA - Goddard Space Flight Center, Greenbelt, Maryland

June 2009 - Present

My roles include research in the exospheres of Mercury and the Moon. I am PI of the SSERVI team, LEADER, that studies the lunar environment and dynamics for exploration research. We have four teams studying radiation, dust, exospheres and plasmas, respectively. We have a laboratory component to test the effect of solar wind on surfaces to simulate the surfaces of the Moon and airless planetary bodies. Another laboratory component involves the production and evolution of dust on surfaces such as that of the Moon.

Education


• Rice University, Space Physics and Astronomy, Ph.D. 1987
• University of Texas at Austin, Astronomy, MS 1975
• Southwestern University, Mathematics and Physics, BS 1971
 

Professional Societies


American Astronomical Society Division for Planetary Science; American Geophysical Society; International Astronomical Union

Full member

1985 - Present


International Astronomical Union

2007 - Present

Awards


Robert H Goddard Group Achievement Award for Science for SSERVI Team DREAM2, 2019

NASA Group Achievement Award for MESSENGER, 2018

Robert H Goddard Exceptional Achievement for Science, 2018

Solar System Division Peer Award, 2014

Publications


Refereed

2024. "Solar Wind Ion Sputtering from Airless Planetary Bodies: New Insights into the Surface Binding Energies for Elements in Plagioclase Feldspars.", The Planetary Science Journal, 5 (12): 272 [10.3847/psj/ad8eaf] [Journal Article/Letter]

2024. "Moon: Handle With Care.", Vol. 56, Issue 1 (Obituaries, News & Commentaries, Community Reports), 56 (1): [10.3847/25c2cfeb.917b6d52] [Journal Article/Letter]

2024. "Absolute doubly differential angular sputtering yields for 20 keV Kr+ on polycrystalline Cu.", Journal of Applied Physics, 135 (3): [10.1063/5.0184417] [Journal Article/Letter]

2023. "In Situ Optimized Substrate Witness Plates: Ground Truth for Key Processes on the Moon and Other Planets.", Earth and Space Science, 10 (9): [10.1029/2023ea003004] [Journal Article/Letter]

2023. "Lunar Solar Occultation Explorer (LunaSOX).", Frontiers in Astronomy and Space Sciences, 10 [10.3389/fspas.2023.1163517] [Journal Article/Letter]

2023. "Establishing a Best Practice for SDTrimSP Simulations of Solar Wind Ion Sputtering.", The Planetary Science Journal, 4 (4): 67 [10.3847/psj/acc587] [Journal Article/Letter]

2023. "Erratum: “The Influence of Surface Binding Energy on Sputtering in Models of the Sodium Exosphere of Mercury” (2022, PSJ, 3, 139).", The Planetary Science Journal, 4 (4): 78 [10.3847/psj/acc534] [Journal Article/Letter]

2023. "Latitudinal and radial dependence of the lunar sodium exospheric temperature and linewidths.", Icarus, 115560 [10.1016/j.icarus.2023.115560] [Journal Article/Letter]

2022. "Updated Photon Scattering Coefficients (g_values) for Mercury’s Exospheric Species.", The Astrophysical Journal Supplement Series, 263 (2): 37 [10.3847/1538-4365/ac9eab] [Journal Article/Letter]

2022. "The Influence of Surface Binding Energy on Sputtering in Models of the Sodium Exosphere of Mercury.", The Planetary Science Journal, 3 (6): 139 [10.3847/psj/ac67de] [Journal Article/Letter]

2022. "Comparative Na and K Mercury and Moon Exospheres.", Space Science Reviews, 218 (1): 2 [10.1007/s11214-022-00871-w] [Journal Article/Letter]

2022. "Solar Wind Ion Sputtering of Sodium from Silicates Using Molecular Dynamics Calculations of Surface Binding Energies.", The Astrophysical Journal Letters, 925 (1): L6 [10.3847/2041-8213/ac42d8] [Journal Article/Letter]

2021. "Sputtering of surfaces by ion irradiation: A comparison of molecular dynamics and binary collision approximation models to laboratory measurements.", Journal of Applied Physics, 130 (1): 013302 [10.1063/5.0051073] [Journal Article/Letter]

2021. "Lunar Atmosphere: Source and Loss Processes.", Encyclopedia of Lunar Science, 1000 [Article in Book]

2021. "Volatiles and Refractories in Surface-Bounded Exospheres in the Inner Solar System.", Space Science Reviews, 217 (5): 61 [10.1007/s11214-021-00833-8] [Journal Article/Letter]

2021. "Lifetime of a transient atmosphere produced by lunar volcanism.", Icarus, 359 114304 [10.1016/j.icarus.2021.114304] [Journal Article/Letter]

2021. "SERENA: Particle Instrument Suite for Determining the Sun-Mercury Interaction from BepiColombo.", Space Science Reviews, 217 (1): 11 [10.1007/s11214-020-00787-3] [Journal Article/Letter]

2020. "Investigating Mercury’s Environment with the Two-Spacecraft BepiColombo Mission.", Space Science Reviews, 216 (5): 93 [10.1007/s11214-020-00712-8] [Journal Article/Letter]

2019. "Meteoroids: Sources of Meteors on Earth and Beyond: Extraterrestrial Meteors.", , [Book]

2019. "Was the Sun a Slow Rotator? Sodium and Potassium Constraints from the Lunar Regolith.", The Astrophysical Journal, 876 (1): L16 [10.3847/2041-8213/ab18fb] [Journal Article/Letter]

2019. "The lunar neon exosphere seen in LACE data.", Icarus, 329 246-250 [10.1016/j.icarus.2019.04.018] [Journal Article/Letter]

2019. "Coronagraphic observations of the lunar sodium exosphere January–June, 2017.", Icarus, [10.1016/j.icarus.2019.02.027] [Journal Article/Letter]

2019. "Solar Wind Implantation Into the Lunar Regolith: Monte Carlo Simulations of H Retention in a Surface With Defects and the H 2 Exosphere.", Journal of Geophysical Research: Planets, 2018JE005805 [10.1029/2018je005805] [Journal Article/Letter]

2019. "Observations of Mercury's Exosphere: Composition and Structure.", Mercury: The View After MESSENGER, 371-406 [Article in Book]

2019. "Understanding Mercury's Exosphere: Models derived from MESSENGER observations.", Mercury: The View After MESSENGER, [Article in Book]

2018. "Extraterrestrial Meteors.", Meteoroids: Sources of Meteors on Earth and Beyond, [Article in Book]

2018. "Exospheric escape: A parametrical study.", Advances in Space Research, 62 (8): 2364-2371 [10.1016/j.asr.2017.06.015] [Journal Article/Letter]

2018. "Evidence Connecting Mercury's Magnesium Exosphere to Its Magnesium-Rich Surface Terrane.", Geophysical Research Letters, [10.1029/2018gl078407] [Journal Article/Letter]

2018. "The Dust, Atmosphere and Plasma at the Moon.", New Views of the Moon 2, [Article in Book]

2017. "Contributions of solar wind and micrometeoroids to molecular hydrogen in the lunar exosphere.", Icarus, 283 31-37 [10.1016/j.icarus.2016.04.019] [Journal Article/Letter]

2017. "Seasonal variations of Mercury's magnesium dayside exosphere from MESSENGER observations.", Icarus, 281 46-54 [10.1016/j.icarus.2016.08.032] [Journal Article/Letter]

2016. "New discoveries from MESSENGER and insights into Mercury's exosphere.", Geophysical Research Letters, 43 (22): 11,545-11,551 [10.1002/2016gl071284] [Journal Article/Letter]

2016. "A cold-pole enhancement in Mercury's sodium exosphere.", Geophysical Research Letters, 43 (21): 11,121-11,128 [10.1002/2016gl071071] [Journal Article/Letter]

2016. "The gas-surface interaction of a human-occupied spacecraft with a near-Earth object.", Advances in Space Research, 58 (9): 1648-1653 [10.1016/j.asr.2016.08.031] [Journal Article/Letter]

2016. "Observations of the minor species Al and Fe in Mercury's exosphere.", Icarus, [10.1016/j.icarus.2016.10.019] [Journal Article/Letter]

2016. "Pathways for energization of Ca in Mercury’s exosphere.", Icarus, 268 32-36 [10.1016/j.icarus.2015.12.035] [Journal Article/Letter]

2015. "The meteoroid stream of comet Encke at Mercury: Implications for MErcury Surface, Space ENvironment, GEochemistry, and Ranging observations of the exosphere.", Geophysical Research Letters, 42 (18): 7311-7318 [10.1002/2015gl065361] [Journal Article/Letter]

2015. "Impact vaporization as a possible source of Mercury’s calcium exosphere.", Icarus, 250 230-237 [10.1016/j.icarus.2014.11.035] [Journal Article/Letter]

2015. "Mercury’s seasonal sodium exosphere: MESSENGER orbital observations.", Icarus, 248 547-559 [10.1016/j.icarus.2014.10.037] [Journal Article/Letter]

2014. "Seasonal variations in Mercury’s dayside calcium exosphere.", Icarus, 238 51-58 [10.1016/j.icarus.2014.04.049] [Journal Article/Letter]

2014. "Mercury’s Weather-Beaten Surface: Understanding Mercury in the Context of Lunar and Asteroidal Space Weathering Studies.", Space Sci Rev, 181 (1-4): 121-214 [10.1007/s11214-014-0039-5] [Journal Article/Letter]

2013. "Observation of neutral sodium above Mercury during the transit of November 8, 2006.", Icarus, 226 (1): 172-185 [10.1016/j.icarus.2013.05.029] [Journal Article/Letter]

2013. "The lunar photoelectron sheath: A change in trapping efficiency during a solar storm.", Journal of Geophysical Research: Planets, 118 (5): 1114-1122 [10.1002/jgre.20086] [Journal Article/Letter]

2012. "Modeling MESSENGER observations of calcium in Mercury's exosphere.", Journal of Geophysical Research: Planets, 117 (E12): [10.1029/2012je004158] [Journal Article/Letter]

2012. "MESSENGER observations of a flux-transfer-event shower at Mercury.", Journal of Geophysical Research: Space Physics, 117 (A12): [10.1029/2012ja017926] [Journal Article/Letter]

2012. "Metallic species, oxygen and silicon in the lunar exosphere: Upper limits and prospects for LADEE measurements.", Journal of Geophysical Research, 117 (A3): A03103 [10.1029/2011ja017044] [Journal Article/Letter]

2012. "Solar-Storm/Lunar Atmosphere Model (SSLAM): An overview of the effort and description of the driving storm environment.", Journal of Geophysical Research, 117 E00K04 [10.1029/2012je004070] [Journal Article/Letter]

2012. "The effect on the lunar exosphere of a coronal mass ejection passage.", Journal of Geophysical Research, 117 E00K02 [10.1029/2011je004011] [Journal Article/Letter]

2012. "Flux estimates of ions from the lunar exosphere.", Geophysical Research Letters, 39 13101 [10.1029/2012GL052001] [Journal Article/Letter]

2011. "Limits to Mercury's magnesium exosphere from MESSENGER second flyby observations.", Planetary and Space Science, 59 (15): 1992-2003 [10.1016/j.pss.2011.05.002] [Journal Article/Letter]

2011. "Regarding the possible generation of a lunar nightside exo-ionosphere.", Icarus, 216 (1): 169-172 [10.1016/j.icarus.2011.08.013] [Journal Article/Letter]

2011. ""Discharging of Roving Objects in the Lunar Polar Regions".", Journal of Spacecraft and Rockets, 48 (4): 700-704 [10.2514/1.51897] [Journal Article/Letter]

2011. "Constraints on Mercury’s Na exosphere: Combined MESSENGER and ground-based data.", Icarus, 211 (1): 21-36 [10.1016/j.icarus.2010.10.019] [Journal Article/Letter]

2010. "Observations of the lunar impact plume from the LCROSS event.", Geophysical Research Letters, 37 (23): [10.1029/2010gl045508] [Journal Article/Letter]

2010. "Observations of metallic species in Mercury’s exosphere.", Icarus, 209 (1): 75-87 [10.1016/j.icarus.2010.02.018] [Journal Article/Letter]

2010. "Anticipated electrical environment within permanently shadowed lunar craters.", Journal of Geophysical Research, 115 (E3): E03004 [Full Text] [10.1029/2009JE003464] [Journal Article/Letter]

2010. "MESSENGER observations of large flux transfer events at Mercury.", Geophysical Research Letters, 37 (2): [10.1029/2009gl041485] [Journal Article/Letter]

2010. "Modeling of the magnetosphere of Mercury at the time of the first MESSENGER flyby .", Icarus, 209 (1): 3-10 [Journal Article/Letter]

2009. "Sodium winds on Mercury.", Icarus, 204 (2): 355-367 [10.1016/j.icarus.2009.06.028] [Journal Article/Letter]

2009. "Sodium-ion pickup observed above the magnetopause during MESSENGER's first Mercury flyby: Constraints on neutral exospheric models.", Geophysical Research Letters, 36 (4): L04106 [10.1029/2008gl036207] [Journal Article/Letter]

2009. "Space environment of Mercury at the time of the first MESSENGER flyby: Solar wind and interplanetary magnetic field modeling of upstream conditions.", Journal of Geophysical Research, 114 (A10): A10101 [10.1029/2009ja014287] [Journal Article/Letter]

2009. "Mercury’s atmosphere and magnetosphere: MESSENGER third flyby observations (Invited).", AGU Fall Meeting Abstracts, A1- [Journal Article/Letter]

2009. "MHD modeling of the interaction of the magnetosphere of Mercury with the solar wind during the MESSENGER flybys.", AGU Fall Meeting Abstracts, A8- [Journal Article/Letter]

2009. "Lunar Neutral Exosphere Properties from Pickup Ion Analysis.", AGU Fall Meeting Abstracts, 1266- [Journal Article/Letter]

2009. "Space Weathering Impact on Solar System Surfaces and Planetary Mission Science.", AGU Fall Meeting Abstracts, 1465- [Journal Article/Letter]

2008. "On the impact of multiply charged heavy solar wind ions on the surface of Mercury, the Moon and Ceres.", Planetary and Space Science, 56 (11): 1506-1516 [10.1016/j.pss.2008.07.018] [Journal Article/Letter]

2008. "MESSENGER Observations of the Composition of Mercury's Ionized Exosphere and Plasma Environment.", Science, 321 (5885): 90-92 [10.1126/science.1159314] [Journal Article/Letter]

2008. "Mercury's Magnetosphere After MESSENGER's First Flyby.", Science, 321 (5885): 85-89 [10.1126/science.1159040] [Journal Article/Letter]

2008. "Observations of the sodium tail of Mercury.", Icarus, 194 (1): 1-12 [10.1016/j.icarus.2007.09.023] [Journal Article/Letter]

2008. "Distribution of sodium pickup ions during MESSENGER's first and second Mercury flybys: constraints on exospheric models.", AGU Fall Meeting Abstracts, A43- [Journal Article/Letter]

2007. "Processes that Promote and Deplete the Exosphere of Mercury.", Space Sci Rev, 132 (2-4): 433-509 [10.1007/s11214-007-9232-0] [Journal Article/Letter]

2007. "Predicting the long-term solar wind ion-sputtering source at Mercury.", Planetary and Space Science, 55 (11): 1584-1595 [10.1016/j.pss.2006.10.011] [Journal Article/Letter]

2007. "Mercury’s Atmosphere: A Surface-Bounded Exosphere.", Space Sci Rev, 131 (1-4): 161-186 [10.1007/s11214-007-9260-9] [Journal Article/Letter]

2007. "Mercury's exosphere origins and relations to its magnetosphere and surface.", Planetary and Space Science, 55 (9): 1069-1092 [10.1016/j.pss.2006.11.008] [Journal Article/Letter]

2006. "Curve‐of‐Growth Model for Sodium D2 Emission at Mercury.", Publications of the Astronomical Society of the Pacific, 118 (847): 1344-1350 [10.1086/508070] [Journal Article/Letter]

2006. "Spatial distribution of sodium on Mercury.", Icarus, 181 (1): 1-12 [10.1016/j.icarus.2005.10.026] [Journal Article/Letter]

2006. "Measuring pickup ions to characterize the surfaces and exospheres of planetary bodies: Applications to the Moon.", Geophysical Research Letters, 33 (5): L05201 [10.1029/2005gl024520] [Journal Article/Letter]

2006. "Ice on the Moon and Mercury.", Advances in Geosci, 3 93-102 [Journal Article/Letter]

2005. "Origins of Europa Na cloud and torus.", Icarus, 178 (2): 367-385 [10.1016/j.icarus.2005.03.027] [Journal Article/Letter]

2001. "X-ray fluorescence measurements of the surface elemental composition of asteroid 433 Eros.", Meteoritics and Planetary Science, 36 1673-1695 [10.1111/j.1945-5100.2001.tb01856.x] [Journal Article/Letter]

1996. "Microwave Sounding of the Giant Planets.", Icarus, 119 (1): 67-89 [10.1006/icar.1996.0003] [Journal Article/Letter]

Non-Refereed

2019. "Mercury's Sodium Exosphere Dawn/Dusk Asymmetry.", Proceedings of the American Geophysical Union Fall Meeting, P13C-3527 [Proceedings]

2019. "Sputter Loss of an Early Transient Lunar Atmosphere.", European Planetary Science Conference, EPSC-DPS2019-70. [Proceedings]

2019. "Sodium exosphere of Mercury: A call for new Earth-based telescopes and observers.", EPSC/ EPSC-DPS Joint Meeting 2019, 13.1967 [Proceedings]

2019. "The Lunar Neon Exosphere seen in LACE Data.", NASA Exploration Science Forum, (AMES Research Center): [Proceedings]

2019. "Limits on X-Ray Luminosity from Pluto's H2 Corona.", LPI/Pluto System After New Horizons, 2133 id.7080 [Proceedings]

2019. "The Sun was likely a Slow Rotator: Lunar Geochemical Constraints.", LPI, (50.3050s): [Proceedings]

2019. "The Sun was likely a Slow Rotator: Lunar Geochemical Constraints.", Lunar and Planetary Science Conference, 50 [Proceedings]

2013. "'Where to Hide?': A Tele-Robotic Application for HEOMD's Earth-Moon L2 Mission.", Lunar and Planetary Institute Science Conference Abstracts, 44 2514 [Journal Article/Letter]

Selected Public Outreach


New Views of Mercury's Exosphere from MESSENGER

October 2018 - October Present

Public talk at the Geological Society of Wshington, Given at the COSMOS  Club, Washington, DC

October 24, 2018