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Dorrit Hoffleit

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Ellen Dorrit Hoffleit (March 12, 1907 – April 9, 2007)[1] was an American senior research astronomer at Yale University. She is best known for her work in variable stars, astrometry, spectroscopy, meteors, and the Bright Star Catalog. She is also known for her mentorship of many young women and generations of astronomers.[2]

Dorrit Hoffleit
Colour portrait photograph of Dorrit Hoffleit. A female scientist.
Born(1907-03-12)March 12, 1907
Florence, Alabama
DiedApril 9, 2007(2007-04-09) (aged 100)
New Haven, Connecticut
NationalityAmerican
Other namesEllen Dorrit Hoffleit
Alma materRadcliffe College
Known forBright Star Catalog
AwardsCaroline Wilby Prize
George Van Biesbroeck Prize (1988)
Scientific career
FieldsAstronomy
InstitutionsHarvard College Observatory, Ballistic Research Laboratory, Harvard University, Yale University, Maria Mitchell Observatory
ThesisOn the Spectroscopic Determination of Absolute Magnitudes, With Application to the Southern Stars of Types Later than A. (1938)
Doctoral advisorBart Bok

Life edit

Hoffleit's interest in astronomy began with the 1919 Perseid meteor shower that she saw with her mother.[3] In 1928, she graduated cum laude with a B.A. in mathematics. She then went on to work for the Harvard College Observatory, searching for variable stars.[4] In 1938, she was awarded a Ph.D. in astronomy from Radcliffe College[5] and was subsequently hired, in 1948, as an astronomer at Harvard University. She remained at Harvard until 1956 when she moved to Yale University. She remained at Yale until retirement in 1975.[6]

At Yale she followed in the footsteps of Ida Barney, taking over her astrometric work, and of whom she later wrote "To know [her] was a pleasure, inspiration, and privilege, both at work and socially."[7] Hoffleit also served as director of the Maria Mitchell Observatory on Nantucket Island from 1957 to 1978, where she ran summer programs (May–October) for more than 100 students, many of whom went on to successful careers in astronomy.[2] In her final years at Yale, Hoffleit taught basic courses in astronomy to undergraduates. Her passionate lectures in Davies Hall, usually with over 100 students, inspired and awed them.[citation needed] She engendered a lifelong interest in astronomy for young women and men, many of whom were just satisfying a prerequisite to their undergraduate degrees.

During the mid 1950s, Hoffleit consulted for the U.S. Army's Ballistic Research Laboratories in "Doppler reductions".[8]

She was the main editor of the Yale Bright Star Catalogue. The Catalogue is a compendium of information on the 9,110 brightest stars in the sky. She also co-authored The General Catalogue of Trigonometric Stellar Parallaxes, containing precise distance measurements to 8,112 stars, information critical to understanding the kinematics of the Milky Way galaxy and the evolution of the solar neighborhood. With Harlan J. Smith, Hoffleit discovered the optical variability of the first-discovered quasar 3C 273.[9]

In 1988, Hoffleit was awarded the George Van Biesbroeck Prize by the American Astronomical Society for a lifetime of service to astronomy. On March 7-8, 1997, Yale University hosted a symposium in honor of Hoffleit's 90th birthday, dedicated to her nearly 70-year career.[10]

Hoffleit turned 100 on March 12, 2007, and died a month later from complications of cancer.[11]

See also edit

References edit

  1. ^ Saladyga, Michael; Waagen, Elizabeth (2010-05-02). "In Memoriam: Dorrit Hoffleit | aavso.org". www.aavso.org.
  2. ^ a b Dorrit Hoffleit (2002). MISFORTUNES AS BLESSINGS IN DISGUISE: The Story of My Life. American Association of Variable Star Observers. ISBN 978-1-878174-48-2.
  3. ^ Horch, Elliott (2007). "Hofflet, Ellen Dorrit". In Hockey, Thomas; Trimble, Virginia; Williams, Thomas R. (eds.). The Biographical Encyclopedia of Astronomers. New York: Springer Publishing. pp. 516–517. Bibcode:2007bea..book.....H. doi:10.1007/978-0-387-30400-7_636. ISBN 978-0-387-30400-7. (subscription required)
  4. ^ Hoffleit, Dorritt (1931). "New Variable Stars in MWF 175". Bulletin of the Harvard College Observatory. 884 (10): 10. Bibcode:1931BHarO.884...10H.
  5. ^ Hoffleit, Ellen D. (1938). On The Spectroscopic Determination Of Absolute Magnitudes, With Application to Southern Stars Of Types Later Than A (Ph.D. thesis). Radcliffe College – via ProQuest.
  6. ^ Pearce, Jeremy (April 23, 2007). "Obituary: E. Dorrit Hoffleit, Scientist, Dies at 100". The New York Times. Retrieved November 19, 2012.
  7. ^ Hoffleit, E. Dorrit (June 1990), "Ida M. Barney, Ace Astrometrist" (PDF), STATUS: The Committee on the Status of Women in Astronomy, American Astronomical Society, archived from the original (PDF) on 5 April 2016, retrieved 17 November 2012
  8. ^ Ballistic Research Laboratories. Ordnance Corps, Department of the Army. April 1955.
  9. ^ Smith, H. J. & Hoffleit, D. (1963). "Light Variations in the Superluminous Radio Galaxy 3C273". Nature. 198 (4881): 650. Bibcode:1963Natur.198..650S. doi:10.1038/198650a0. S2CID 4189751.
  10. ^ Philip, A.G. Davis; van Altena, William F.; Upgren, Arthur R. (1999). Anni Mirabiles: A Symposium Celebrating the 90th Birthday of Dorrit Hoffleit. Schenectady: L. Davis Press, Inc. ISBN 0933485239.
  11. ^ "Dorrit Hoffleit (1907 - 2007)". AAS Newsletter. May–June 2007.

Further reading edit

External links edit

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