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Images in the rocket ultraviolet - The stellar population in the central bulge of M31Imagery of the bulge of M31 obtained with a rocket-borne telescope in two broad bands centered at 1460 A and 2380 A is discussed. The UV spatial profiles over a region about 200 arcsec wide are identical with those at visible wavelengths. The absence of detectable point sources indicates that main-sequence stars hotter than B0 V are not present in the bulge. It is suggested that the far-UV flux in old stellar populations originates in post-AGB stars. The UV flux from such stars is extremely sensitive to age and the physics of their previous mass loss.
Document ID
19860032536
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Bohlin, R. C.
(Space Telescope Science Institute Baltimore, MD, United States)
Cornett, R. H.
(Space Telescope Science Inst. Baltimore, MD, United States)
Hill, J. K.
(Space Telescope Science Inst. Baltimore, MD, United States)
Hill, R. S.
(SASC Technologies, Inc. Lanham, MD, United States)
Oconnell, R. W.
(Virginia, University Charlottesville, United States)
Stecher, T. P.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 12, 2013
Publication Date
November 15, 1985
Publication Information
Publication: Astrophysical Journal, Part 2 - Letters to the Editor
Volume: 298
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
86A17274
Distribution Limits
Public
Copyright
Other

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