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Determination of the mass of globular cluster X-ray sourcesThe precise positions of the luminous X-ray sources in eight globular clusters have been measured with the Einstein X-Ray Observatory. When combined with similarly precise measurements of the dynamical centers and core radii of the globular clusters, the distribution of the X-ray source mass is determined to be in the range 0.9-1.9 solar mass. The X-ray source positions and the detailed optical studies indicate that (1) the sources are probably all of similar mass, (2) the gravitational potentials in these high-central density clusters are relatively smooth and isothermal, and (3) the X-ray sources are compact binaries and are probably formed by tidal capture.
Document ID
19840060506
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Grindlay, J. E.
(Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Hertz, P.
(Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Steiner, J. E.
(Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Murray, S. S.
(Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Lightman, A. P.
(Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Date Acquired
August 12, 2013
Publication Date
July 1, 1984
Publication Information
Publication: Astrophysical Journal, Part 2 - Letters to the Editor
Volume: 282
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
84A43293
Funding Number(s)
CONTRACT_GRANT: NAGW-246
CONTRACT_GRANT: NAS8-30751
Distribution Limits
Public
Copyright
Other

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