Identification of the donor in the X-ray binary GRS 1915+105

Abstract

We report on the results of medium-resolution spectroscopy of GRS 1915+105 in the near-infrared H and K band using the 8m VLT at ESO. We clearly identify absorption bandheads from 12CO and 13CO. Together with other features this results in a classification of the mass-donating star in this binary as a K-M III star, clearly indicating that GRS 1915+105 belongs to the class of low-mass X-ray binaries (LMXB).

arXiv comment5 pages, 3 figures, to appear as A&A Lett

References in corpus (9)

• Black Hole Spin in X-Ray Binaries: Observational Consequences
• MERLIN observations of relativistic ejections from GRS 1915+105
• An unstable central disk in the superluminal black-hole X-ray binary GRS 1915+105
• Near-Infrared Classification Spectroscopy: H-band Spectra of Fundamental MK Standards
• Evidence for a Disk-Jet Interaction in the Microquasar GRS 1915+105
• Synthetic Spectra and Color-Temperature Relations of M Giants
• Faint Infrared Flares from the Microquasar GRS 1915+105
• On the Mass-Donating Star in GRS 1915+105
• IR spectra of the microquasar GRS 1915+105 during a low state

Cited by in corpus (82)

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• The Chandra HETGS and RXTE view of GRS 1915+105
• High resolution Chandra HETG and RXTE observations of GRS 1915+105 : A hot disk atmosphere & cold gas enriched in Iron and Silicon
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• Characterizing a new class of variability in GRS 1915+105 with simultaneous INTEGRAL/RXTE observations
• Evidence for a relativistic iron line in GRS 1915+105
• GRS 1915+105: the distance, radiative processes and energy-dependent variability
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• Testing the Kerr black hole hypothesis using X-ray reflection spectroscopy and a thin disk model with finite thickness
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• Energy Dependence of a Low Frequency QPO in GRS 1915+105
• Does GRS 1915+105 exhibit "canonical" black-hole states?
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• IR Monitoring of the Microquasar GRS 1915+105: Detection of Orbital and Superhump Signatures
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• A Statistical Study on the Low-Frequency QPO Amplitude Spectrum and Amplitude in GRS 1915+105
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• Probing the Peculiar Behavior of GRS 1915+105 at Near-Eddington Luminosity
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• Unraveling the foretime of GRS 1915+105 using AstroSat observations: Wide-band spectral and temporal characteristics
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• ALMA/NICER observations of GRS 1915+105 indicate a return to a hard state
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• A Comparison of Ultraluminous X-ray Sources in NGC 1399 and the Antennae Galaxies (NGC 4038/4039)
• The 590 days long term periodicity of the microquasar GRS 1915+105
• A Systematic Study on Energy Dependence of Quasi-Periodic Oscillation Frequency in GRS 1915+105
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• Mid-Infrared observations of GRS 1915+105 during plateau and flaring states
• Low Frequency Coherence Break in The Soft X-ray State of GRS 1915+105
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• Spectroscopic Identification of the Infrared Counterpart to GX5-1
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• Spectral Analysis of $\chi$ Class Data of GRS 1915+105 Using TCAF Solution
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• QPOML: A Machine Learning Approach to Detect and Characterize Quasi-Periodic Oscillations in X-ray Binaries