2001A&A...369..210H


C.D.S. - SIMBAD4 rel 1.7 - 2020.12.03CET17:44:13

2001A&A...369..210H - Astronomy and Astrophysics, volume 369, 210-214 (2001/4-1)

IR spectra of the microquasar GRS 1915+105 during a low state.

HARLAFTIS E.T., DHILLON V.S. and CASTRO-TIRADO A.

Abstract (from CDS):

There is controversy regarding the nature of the suspected donor star to the microquasar GRS 1915+105, and hence whether GRS 1915+105 is a high mass X-ray binary (HMXB) or a low-mass X-ray binary (LMXB). In order to clarify this issue, we obtained an infrared (J, H and K) spectrum of GRS 1915+105 in its low state which shows a steeper continuum than the prototype X-ray binary Sco X-1. We did not detect any HeII emission at 2.189 µm from GRS 1915+105 in our quiescent spectrum, indicating that the line is transient and is only observed during episodes of high X-ray activity. For our instrument configuration, there is no detection of the 12CO lines which are characteristic of late-type stars either in GRS 1915+105 or Sco X-1.

Abstract Copyright:

Journal keyword(s): infrared: stars - X-ray: stars - black hole physics - stars: binaries - stars: individual: GRS 1915+105

Simbad objects: 8

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Number of rows : 8

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 V* V818 Sco LXB 16 19 55.0688745859 -15 38 25.019920749 11.60 12.40 11.1     Oev 1533 0
2 V* V2116 Oph Sy* 17 32 02.1544831482 -24 44 44.125962969   20.78 18.4     M6IIIe 647 1
3 V* V5512 Sgr LXB 18 14 31.55 -17 09 26.7           K5III 356 0
4 Granat 1915+105 LXB 19 15 11.54938 +10 56 44.7585           ~ 2322 0
5 * ome01 Aql * 19 17 48.9995654774 +11 35 43.523350107   5.461 5.283     F0IV 55 0
6 HD 226868 HXB 19 58 21.6758193269 +35 12 05.782512305 9.38 9.72 8.91 8.42   O9.7Iabpvar 3958 0
7 V* V1521 Cyg HXB 20 32 25.78 +40 57 27.9           WN4/5-6/7 1788 2
8 BD+49 3718 HXB 22 01 38.2020869992 +50 10 04.633112055 8.95 9.47 9.31     Be 35 0

    Equat.    Gal    SGal    Ecl

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2020.12.03-17:44:13

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