Fred Gillett (astronomer)
Fred Gillett | |
|---|---|
 Gillett in June 1999 | |
| Born | Frederick Carl Gillett February 7, 1937 Minot, North Dakota, U.S. |
| Died | April 22, 2001 (aged 64) Seattle, Washington, U.S. |
| Alma mater | University of Minnesota (B.S., Ph.D.) |
| Spouse |
Marian Ruth DeGriselle
(m. 1960) |
| Awards | NASA Exceptional Scientific Achievement Medal (1984) |
| Scientific career | |
| Fields | Astronomy |
| Institutions | |
| Thesis | Zodiacal Light and Interplanetary Dust (1966) |
| Doctoral advisor | Edward P. Ney |
Frederick Carl Gillett (February 7, 1937 – April 22, 2001) was an American astronomer who was a pioneer of infrared astronomy. He was based successively at the University of California, San Diego, Kitt Peak National Observatory, and the International Gemini Observatory. His discoveries include the Vega phenomenon and the first unidentified infrared emission bands.
Biography
[edit]Gillett was born on February 7, 1937, in Minot, North Dakota. He studied at the University of Minnesota, receiving a bachelor of science in physics in 1960. In 1960 he also married Marian Ruth DeGriselles, a registered nurse.[1] As a graduate student at the university he took an interest in the new field of infrared astronomy, under the guidance of his doctoral advisor Edward P. Ney.[2][3] Gillett travelled to Tucson, Arizona to use Frank Low's new infrared detector, a bolometer. With Low, he designed and built the first spectrometer that could measure infrared radiation with wavelengths of 8–14μm.[3] As part of his thesis Gillett used an infrared photometer attached to a high-altitude balloon to observe the zodiacal cloud.[4] He was awarded a Ph.D. in physics in 1966, one of the first doctorates awarded for infrared astronomy.[5][3]
After graduating he worked at the University of California, San Diego for seven years. In 1973, with his university colleagues William Forrest and Kenneth Merrill, he identified an unexpected infrared emission feature with a wavelength of 11.3μm from the planetary nebulae NGC 7027 and HD 184738.[6] This was the first discovered example of the now widely observed phenomenon known as unidentified infrared emission (UIE) bands. The exact causes of these emissions remain unidentified.[7]
In 1973 he moved to Kitt Peak National Observatory (KPNO) in Arizona where he introduced infrared instrumentation to the observatory.[5]
In 1975 he was part of the team selected by NASA that developed the Infrared Astronomical Satellite (IRAS).[2][8] The project helped open up access to military infrared detector technology that had until then been classified.[1]
For the 10-month duration of the IRAS mission in 1983 Gillett, Marion, and Gillett's colleague George Aumann relocated to the Rutherford Laboratory in Oxfordshire, England.[8] Using IRAS, Gillett and Aumann identified an unexpected excess of infrared emissions from one of the IRAS mission's standard stars, Vega (Alpha Lyrae).[8] They concluded the emissions were caused by circumstellar dust particles over 1.2 mm (0.05 in) in diameter orbiting Vega at a distance of roughly 85 AU (1.3×1010 km) and at a temperature of about 85 K (−188.2 °C).[9] The Vega phenomenon, as it became known, provided the first solid evidence that planet formation occurs outside of our solar system.[2][9]
In 1984 he was awarded the NASA Exceptional Scientific Achievement Medal "for outstanding contributions to IRAS".[10][11]
In 1987 Gillett took a two-year sabbatical to be a visiting senior scientist in the Office of Space Science at NASA's headquarters in Washington, D.C.[2][5][1] He contributed to the development of several infrared telescope projects, including SIRTF, later renamed the Spitzer Space Telescope; the Stratospheric Observatory for Infrared Astronomy (SOFIA), a 2.5 m (8.2 ft) reflector telescope mounted inside a Boeing 747SP; and 2MASS, an astronomical survey of the whole sky.[2]
In 1994 Gillett was appointed the project scientist for the development of the International Gemini Observatory, a pair of 8.1 m (27 ft) optical/infrared telescopes on Mauna Kea in Hawai'i and Cerro Pachón in Chile that saw first light in 1999 and 2000 respectively.[5][2] In August 1999 Gillett was diagnosed with myelodysplastic syndrome. He died on April 22, 2001, aged 64, at the University of Washington Medical Center in Seattle, Washington following a stem-cell transplant.[1][5][3] He was survived by his wife, three children, and his mother.[10]
In 2002 the Gemini North Telescope on Mauna Kea, Hawai'i was officially named The Frederick C. Gillett Gemini Telescope.[12] The 4.6 km (2.9 mi) wide main belt asteroid 74509 Gillett is named in his honor.[13]
References
[edit]- ^ a b c d Kennedy, Ed (December 2002). "Beyond the Visible: The Story of Fred Gillett, a Private Man Who Lived His Life in the Heat of the Night" (PDF). Gemini Observatory Newsletter. No. 25. Gemini Observatory. pp. 3–14. Archived (PDF) from the original on October 18, 2022. Retrieved February 21, 2023.
- ^ a b c d e f Caroff, Larry; Low, Frank (December 31, 2001). "Fred C. Gillette (1937–2001)". Bulletin of the AAS. 33 (4). American Astronomical Society. Archived from the original on August 9, 2022. Retrieved February 22, 2023.
- ^ a b c d Low, Frank (June 21, 2001). "Frederick Gillett (1937–2001)". Nature. 411 (6840): 906. doi:10.1038/35082190. ISSN 1476-4687. S2CID 34099835.
- ^ Backman, Dana (December 1, 2004). "Debris Disks: An Overview". ASP Conference Series. 324. Astronomical Society of the Pacific: 9–19. Bibcode:2004ASPC..324....9B. Archived from the original on February 22, 2023. Retrieved February 22, 2023 – via Astrophysics Data System.
- ^ a b c d e "Passing of Fred Gillett, Infrared Astronomy Pioneer" (Press release). National Optical Astronomy Observatory. April 26, 2001. Archived from the original on May 19, 2022. Retrieved February 21, 2023.
- ^ Gillett, F. C.; Forrest, W. J.; Merrill, K. M. (July 1, 1973). "8 - 13-micron spectra of NGC 7027, BD +30 3639, and NGC 6572". The Astrophysical Journal. 183: 87–93. Bibcode:1973ApJ...183...87G. doi:10.1086/152211. ISSN 0004-637X. Archived from the original on January 19, 2023. Retrieved February 22, 2023.
- ^ Kwok, Sun (February 2, 2022). "The mystery of unidentified infrared emission bands". Astrophysics and Space Science. 367 (2): 16. arXiv:2201.02892. Bibcode:2022Ap&SS.367...16K. doi:10.1007/s10509-022-04045-6. ISSN 1572-946X. PMC 8830496. PMID 35210653. Archived from the original on February 22, 2023. Retrieved February 22, 2023.
- ^ a b c Low, F. J.; Aumann, H. H. (December 1, 2004). "Fred Gillett's Role in the Discovery of Planetary Disks: a Commemorative History". ASP Conference Series. 324. Astronomical Society of the Pacific: 3–8. Bibcode:2004ASPC..324....3L. Archived from the original on February 22, 2023. Retrieved February 22, 2023 – via Astrophysics Data System.
- ^ a b Aumann, H. H.; Beichman, C. A.; Gillett, F. C.; de Jong, T.; Houck, J. R.; Low, F. J.; Neugebauer, G.; Walker, R. G.; Wesselius, P. R. (March 1, 1984). "Discovery of a shell around Alpha Lyrae". The Astrophysical Journal. 278: L23–L27. Bibcode:1984ApJ...278L..23A. doi:10.1086/184214. ISSN 0004-637X.
- ^ a b Saxon, Wolfgang (May 2, 2001). "Fred Gillett, 64; Studied Infrared Astronomy". The New York Times. ISSN 0362-4331. Archived from the original on May 27, 2015. Retrieved February 21, 2023.
- ^ "NASA Honor Awards Presented at JPL" (Press release). Pasadena, California: Jet Propulsion Laboratory. December 5, 1985. Archived from the original on September 17, 2008. Retrieved February 21, 2023.
- ^ "Gemini Telescope on Mauna Kea Named in Honor of Dr. Frederick C. Gillett" (Press release). International Gemini Observatory. November 13, 2002. Archived from the original on December 6, 2022. Retrieved February 21, 2023.
- ^ Schmadel, Lutz D. (2012). Dictionary of Minor Planet Names. Vol. 2 (6th ed.). Springer. p. 1223. ISBN 978-3-642-29718-2. Archived from the original on February 22, 2023. Retrieved February 22, 2023.
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