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Paul Feldman

Paul D. Feldman

(Johns Hopkins University)

Paul D. Feldman is currently professor in the Department of Physics and Astronomy at Johns Hopkins University where he has been since 1967. His recent work has been in space ultraviolet astronomy and spectroscopy. He is principal investigator of a NASA-supported sounding rocket program and has been responsible for over three dozen sounding rocket launches primarily for the study of the Earth's upper atmosphere, the aurora and the airglow, the atmospheres of comets and planets, the spectra of hot stars, and cosmic background radiation. This program also developed the UVX experiment which flew on the Space Shuttle Columbia in January 1986. He was principal investigator for a program of comet studies (which included comet Halley in 1985-1986) using the International Ultraviolet Explorer satellite observatory. Dr. Feldman is a co-investigator on the team which developed the Hopkins Ultraviolet Telescope for FUV astronomy as part of the Astro payload that flew on the space shuttle in December 1990 and again in March 1995. He is a General Observer with the Hubble Space Telescope and served on the Space Telescope Users Committee from 1992 to 1995. He is also a member of the FUSE science team and a co-investigator on the HST Advanced Camera for Surveys.

Lucy McFadden

Lucy A. McFadden

(University of Maryland)

Lucy is an Associate Research Scientist for the University of Maryland Astronomy Department and an expert on reflectance spectroscopy. She has published many papers in professional journals and books, held several elected positions and committee appointments, and is the recipient of multiple awards. She is managing the mission's outreach and archiving activities. Asteroid 3066 McFadden isnamed for her contributions.


Harold Weaver

Harold A. Weaver

(Johns Hopkins University)

Weaver has been pursuing space-borne, rocket-borne, airborne, and ground-based investigations in planetary science since 1978. His thesis work involved analyses of cometary spectra obtained with the NASA/ESA International Ultraviolet Observer (IUE) satellite and was the first systematic investigation of cometary ultraviolet emissions.

In 1985-1986 he made infrared observations of Comet Halley from the NASA Kuiper Airborne Observatory (KAO), which resulted in the first unambiguous detection of water in comets. For this latter work, he was awarded the NASA Medal for Exceptional Scientific Achievement in 1988.

During the past decade, he has led many investigations of comets using the NASA/ESA Hubble Space Telescope (HST). Weaver was the Principal Investigator (PI) on the first HST spectroscopic observations of a comet in September 1991, which resulted in the discovery of the CO Cameron bands, a unique tracer of CO2 in comets. He was the PI on the main HST program to study Comet D/Shoemaker-Levy 9, which plunged into Jupiter's atmosphere in July 1994, and he also served as the Chair of the Science Observing Team, which oversaw the entire HST Comet-Jupiter impact campaign. For this latter work he received a NASA Group Achievement Award. He also led HST investigations of Comets Hyakutake, Hale-Bopp, C/1999 S4 (LINEAR), and several others, and he is a member of the team using HST to measure the sizes, shapes and colors of cometary nuclei.

Weaver is currently participating in a program to study comets with FUSE; more than 60 new emission features have already been discovered during that investigation, including the first detection of H2.

In parallel with his UV studies, Weaver has also continued his infrared and radio investigations of comets, using ground-based facilities at the IRTF, Keck, JCMT, CSO, and IRAM observatories.

During the summer of 1996, asteroid 1984 FN was renamed to asteroid "Halweaver" in recognition of Weaver's work on the chemical composition of comets.

Weaver has published over 90 papers, including studies of planets and their satellites in addition to comets. He has a longstanding interest in research on the formation and evolution of planetary systems and, in particular, wants to investigate possible connections between cometary matter and interstellar material in star-forming regions.