SIMBAD references

2004ApJ...601L..67B - Astrophys. J., 601, L67-L70 (2004/January-3)

Chandra and Hubble Space Telescope confirmation of the luminous and variable X-ray source IC 10 X-1 as a possible Wolf-Rayet, black hole binary.


Abstract (from CDS):

We present a Chandra and Hubble Space Telescope study of IC 10 X-1, the most luminous X-ray binary in the starburst galaxy closest to the Milky Way. Our new hard X-ray observation of X-1 confirms that it has an average 0.5-10 keV luminosity of 1.5x1038 ergs/s, is strongly variable (a factor of ~2 in ≲3 ks), and is spatially coincident (within 0".23±0".30) with the Wolf-Rayet (W-R) star [MAC92] 17A in IC 10. The spectrum of X-1 is best fitted by a power law with Γ~1.8 and a thermal plasma with kT~1.5 keV, although systematic residuals hint at further complexity. Taken together, these facts suggest that X-1 may be a black hole belonging to the rare class of W-R binaries; it is comparable in many ways to Cyg X-3. The Chandra observation also finds evidence for extended X-ray emission cospatial with the large nonthermal radio superbubble surrounding X-1.

Abstract Copyright:

Journal keyword(s): Galaxies: Individual: Alphanumeric: IC 10 - Stars: Wolf-Rayet - X-Rays: Binaries - X-Rays: ISM

Status at CDS:  

CDS comments: IC 10 X-1 = [BWF97] IC 10 X-1, IC 342 X-1 = [FT87] IC 342 1

Simbad objects: 13

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