1996A&A...311L..25S

Query : 1996A&A...311L..25S

1996A&A...311L..25S - Astronomy and Astrophysics, volume 311L25-28 (1996/7-3)

Cyg X-3: evidence for a black hole.

SCHMUTZ W., GEBALLE T.R. and SCHILD H.

Abstract (from CDS):

We have observed time-variations in the profiles of several infrared emission lines from the X-ray binary, Cyg X-3, which is believed to consist of a Wolf-Rayet star and a compact object. We conclude that the variations are due to the orbital motion of the Wolf-Rayet star and derive a mass function for Cyg X-3 of 2.3M☉. Assuming reasonable values for the mass of the Wolf-Rayet star and the inclination of the system, we obtain a range of masses 7-40M☉ for the compact object, with a most likely value of 17M☉. This strongly suggests that the compact component of Cyg X-3 is a black hole.

Abstract Copyright: ∼

Journal keyword(s): binaries: close - stars: individual: Cyg X-3 - stars: Wolf-Rayet - infrared: stars

Simbad objects: 6

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Number of rows : 6
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 X LMC X-3 HXB 05 38 56.6323605504 -64 05 03.317937504   17 17.2     B2.5Ve 722 0
2 HD 226868 HXB 19 58 21.6757355952 +35 12 05.784512688 9.38 9.72 8.91 8.42   O9.7Iabpvar 4590 0
3 HD 192985 PM* 20 16 00.6155322192 +45 34 46.290085536   6.281 5.864     F5V: 94 0
4 V* V1521 Cyg HXB 20 32 25.78 +40 57 27.9           WN4/5-6/7 2035 2
5 * 61 Cyg B PM* 21 06 55.2638444466 +38 44 31.358519864 8.63 7.40 6.03 4.86 3.55 K7V 765 0
6 HD 203856 * 21 23 35.5297279464 +40 01 07.023676800   7.33 7.21     A0V 85 0

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