X-ray sources in globular clusters

Details X-ray sources in globular clusters X-ray sources in globular clusters

Oct 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984mnras.210..899v&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 210, Oct. 15, 1984, p. 899-914.

Astronomy and Astrophysics

Astronomy

96

Binary Stars, Globular Clusters, Milky Way Galaxy, Stellar Luminosity, X Ray Sources, Cataclysmic Variables, Mass Transfer, Metallicity, Spectral Energy Distribution, Stellar Mass Accretion, Stellar Mass Ejection, Stellar Spectrophotometry, X Ray Binaries

Scientific paper

Bright X-ray sources in the Milky Way's globular clusters are limited to luminosities of less than 10 to the 37.3 ergs/sec, while those in the galactic disk range up to about 10 to the 38.4 ergs/sec. Attention is given to two possible explanations for this difference: (1) a dependence of the mass transfer rate on the secondary mass in low mass X-ray binaries, and (2) a dependence of the mass transfer rate on metallicity. The first explanation requires a mass transfer rate increase by a factor of about 5 between secondary masses of about 0.8 and 0.9 solar masses. Such a steep increase is difficult to reconcile with the observed flatness of the X-ray luminosity distribution.

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