Abstract
The UKIRT JHK-band spectrum of GRS 1915+105 shows strong He I (2.059 µn) and Brγ (2.166 µm) emission lines. (1998) found flux variations of a factor of 5 in these lines on a 5 min timescale. Based on the detection or not of the He II emission line, it was suggested that the companion could be a LMXB or a HMXB, respectively. Since the spectral type of the companion star of GRS 1915+105 is still an open question we attempt to clarify the issue by revisiting the object and comparing the JHK spectrum with that of the Be star DM +49 3718 and the prototype X-ray binary Sco X-1.
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Harlaftis, E., Dhillon, V.S., Castro-Tirado, A.J. (2001). Ukirt IR Spectra of the Microquasar GRS 1915+105. In: Castro-Tirado, A.J., Greiner, J., Paredes, J.M. (eds) Microquasars. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-0700-9_8
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DOI: https://doi.org/10.1007/978-94-010-0700-9_8
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