Protoplanetary and Debris disks
Optical, infrared, and millimeter wave observations
Scattered light and spectral energy distribution modeling
Imaging of Extrasolar Planets
Near-infrared adaptive optics surveys of nearby stars
Coronagraph instrument development and data analysis techniques
Studies of future probe-scale and flagship-scale space missions
Surveys of nearby molecular clouds
Structure and evolution of Herbig-Haro flows
HST Cycle 19 GO program 12514 "Imaging of Newly-identified Edge-on Protoplanetary Disks in Nearby Star-Forming Regions"
Herschel DUNES Open Time Key Project
PACS survey of nearby stars for far-infrared excess emission. U.S. PI
Spitzer Cycle 8 GO: "Characterization of New Herbig-Haro Flows in the Taurus Star Formation Region"
Herschel Open Time: "PACS Photometry of Nearby Warm Debris Disk Systems from the WISE All-Sky Survey"
co-Investigator with Dr. Deborah Padgett (GSFC)
Herschel Open Time: "Debris Disks around Planet-Bearing Stars"
co-Investigator with Dr. Geoff Bryden (JPL)
HST Cycle 18 GO program 12291 "STIS coronagraphy of Spitzer-selected debris disks:
co-Investigator with Mr. John Krist (JPL)
NASA ADAP :"Diversity in Debris Disks: Snapshots of Planetary System Evolution"
co-Investigator with Kate Su (U of Arizona)
PMDAP: "The Faint Tail of the Asteroid Size Distribution"
co-Investigator with Dr. Dean Hines (STScI)
HST GO Cycle 16+: "Particle separation in and expansion of the dust arcs of the young star V1331 Cyg"
co-I with Dr. Bringfried Stecklum (Tautenburg)
HST Cycle 16 GO: "Probing the Atomic and Molecular Inventory of a Beta-Pic Analog, the Young, Edge-On Debris Disk of HD32297"
co-I with Dr. Seth Redfield (Wesleyan U.)
Chief, Laboratory for Exoplanets and Stellar AstrophysicsNASA - Goddard Space Flight Center, Greenbelt MD
Visiting Scientist, Exoplanet Study ProgramKavli Institute for Theoretical Astrophysics, University of California, Santa Barbara, CA
Principal ScientistJet Propulsion Laboratory, California Institute of Technology, Pasadena CA
Deputy Project Scientist, Terrestrial Planet Finder Coronagraph pre-projectNASA/JPL/Caltech, Pasadena CA
Acting Project Scientist, Terrestrial Planet Finder Corongraph pre-projectNASA/JPL/Caltech, Pasadena CA
Research ScientistJet Propulsion Laboratory, California Institute of Technology, Pasadena CA
Coronagraph Study Scientist, Terrestrial Planet Finder pre-projectNASA/JPL/Caltech, Pasadena CA
Visiting ScientistLaboratoire d'Astrophysique de Universite de Grenoble, Grenoble, France
Spitzer Space Telescope Project Science OfficeNASA/JPL/Caltech, Pasadena CA
Associate Member, Spitzer/MIPS Instrument Science TeamNASA/JPL/Caltech, Pasadena CA
Staff ScientistNASA/JPL/Caltech, Pasadena CA
Associate Member, HST/WFPC2 Instrument Science TeamNASA/JPL/Caltech, Pasadena CA
Postdoctoral FellowJet Propulsion Laboratory, California Institute of Technology, Pasadena CA
Postdoctoral Research AssociateAstronomy Department, University of Massachusetts, Amherst MA
NASA Graduate Student Research FellowJPL/Caltech, Pasadena CA
Visiting Lecturer in Astronomy, University of Southern California, Spring 1999
Visiting Lecturer in Astronomy, University of California Los Angeles, Winter 1995-6
Ph.D. Astrophysics, California Institute of Technology 1991
B.S.E. Mechanical/Aerospace Engineering and Engineering Physics, Princeton University 1984
Scientific Organizing Committee, Signposts of Planets Conference (April 2011)
Scientific Organizing Committee, Subaru Conference on Exoplanets and Disks (March 2009)
Scientific Organizing Committee, Spitzer Science conference (Nov 2008)
Scientific Organizing Committee, "Spirit of Lyot" conference (June 2007)
Scientific Organizing Committee, Cool Stars XIV conference (Nov 2006)
Local Organizing Committee, Protostars and Planets V meeting (Oct 2005)
Hubble Space Telescope Users' Committee (2001-2003)
Special Session Organizer "The Promise and Pitfalls of High Contrast
Imaging", American Astronomical Sociey 198th meeting (June 2001)
Science Advisory Committee, Protostars and Planets IV meeting (July 1998)
2009 Newcomb-Cleveland Award, American Association for the Advancement of Science
2004 NASA Group Achievement Award, Spitzer Space Telescope Payload Team
1994 NASA Group Achievement Award, WideField/Planetary Camera II Science Team
1994 NASA Group Achievement Award, WideField/Planetary Camera II Calibration Team