| 词条 | Stewart Sharpless |
| 释义 |
Stewart Sharpless (March 29, 1926 – January 19, 2013)[1][2] was an American astronomer who carried out fundamental work on the structure of the Milky Way galaxy. As a graduate student at Yerkes Observatory he worked under William Morgan with fellow graduate student Don Osterbrock.[3] He helped Johnson and Morgan with calculations used to help define the UBV photometric system.[4] In 1952, Sharpless and Osterbrock published their observations that demonstrated the spiral structure of the Milky Way by estimating the distances to H II regions and young hot stars. [5] For a while Sharpless was at Mount Wilson Observatory where he worked on galaxy photography with Walter Baade and Edwin Hubble.[6] In 1953 Sharpless joined the staff of the United States Naval Observatory Flagstaff Station.[6] Here he surveyed and cataloged H II regions of the Milky Way Galaxy using the images from the Palomar Sky Survey. From this work Sharpless published his catalog of H II regions in two editions, the first in 1953 with 142 nebula.[7] The second and final edition was published in 1959 with 313 nebulae[8] (see Sharpless catalog). Stewart Sharpless was before his death a retired Professor Emeritus in the Department of Physics and Astronomy at the University of Rochester. References1. ^Stewart Lane Sharpless {{webarchive|url=https://web.archive.org/web/20140310135822/http://www.millerfuneralandcremationservices.com/Obituaries/Detail.aspx?id=4593 |date=2014-03-10 }} 2. ^Sharpless, Stewart Lane 3. ^Shirley K. Cohen, Interview with Donald E. Osterbrock, Feb 10, 2003, California Institute of Technology Archives 4. ^{{cite journal |last1=Johnson |first1=H. L. |authorlink1=Harold Johnson (astronomer) |last2=Morgan |first2=W. W. |authorlink2=William Wilson Morgan |date=1951 |title=On the Color-Magnitude Diagram of the Pleiades |journal=The Astrophysical Journal |volume=114 |page=543 |doi=10.1086/145496 |quote=Many of the computations were carried out by Mr. Stewart Shaprless and Mrs. Mildred Provin.|bibcode = 1951ApJ...114..522J }} 5. ^{{Cite web|url=https://arxiv.org/ftp/arxiv/papers/1112/1112.0243.pdf|title=W. W. Morgan and the Discovery of the Spiral Arm Structure of our Galaxy|last=Sheehan|first=William|date=2008|website=Journal of Astronomical History and Heritage|access-date=}} 6. ^1 {{cite book |last= Steven |first= Dick|title= Sky and Ocean Joined: The U.S. Naval Observatory, 1830-2000|date= 2002|publisher= Cambridge University Press |isbn= 978-0-521-81599-4 }} 7. ^Stewart Sharpless, A Catalogue of Emission Nebulae Near the Galactic Plane, Astrophysical Journal, vol. 118, p.362, 1953 8. ^Stewart Sharpless, A Catalogue of H II Regions, Astrophysical Journal Supplement, vol. 4, p.257, 1959 External links
4 : American astronomers|University of Rochester faculty|2013 deaths|1926 births |
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