SIMBAD references

2008ApJ...689.1222M - Astrophys. J., 689, 1222-1233 (2008/December-3)

Discovery and interpretation of an X-ray period in the Galactic center source CXOGC J174536.1-285638.


Abstract (from CDS):

We present X-ray and infrared observations of the X-ray source CXOGC J174536.1-285638. Previous observations suggest that this source may be an accreting binary with a high-mass donor (HMXB) or a colliding wind binary (CWB). Based on the Chandra and XMM-Newton light curve, we have found an apparent 189±6 day periodicity with better than 99.997% confidence. We discuss several possible causes of this periodicity, including both orbital and superorbital interpretations. We explore in detail the possibility that the X-ray modulation is related to an orbital period and discuss the implications for two scenarios; one in which the variability is caused by obscuration of the X-ray source by a stellar wind, and the other in which it is caused by an eclipse of the X-ray source. We find that in the first case, CXOGC J174536.1-285638 is consistent with both CWB and HMXB interpretations, but in the second, CXOGC J174536.1-285638 is more likely a HMXB.

Abstract Copyright:

Journal keyword(s): Accretion, Accretion Disks - Infrared: Stars - stars: individual (CXOGC J174536.1-2856 (read: CXOGC J174536.1-285638)) - X-Rays: Binaries - X-Rays: Stars

CDS comments: Fig.1 : Star 2 not identified

Simbad objects: 29

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