The Superluminal Source GRS 1915+105: A High Mass X-Ray Binary?

Details The Superluminal Source GRS 1915+105: A High Mass X-Ray Binary? The Superluminal Source GRS 1915+105: A High Mass X-Ray Binary?

Mar 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997apj...477l..45m&link_type=abstract

Astrophysical Journal Letters v.477, p.L45

Astronomy and Astrophysics

Astronomy

38

Infrared: Stars, Stars: Individual Alphanumeric: Grs 1915+105, X-Rays: Stars, Stars: Emission-Line, Be

Scientific paper

We obtained K-band (2.0--2.5 mu m) infrared spectra of the visually obscured superluminal source GRS 1915+105 at three different epochs of 1995, at times when it was detected as a hard X-ray source. The three spectra exhibit H I Br gamma (2.167 mu m) and He I (2.058 mu m) emission lines. The spectral morphology, absolute magnitude, and time variability of the infrared counterpart are consistent with the class of high-mass X-ray binaries that contain late Oe and early Be stars as mass donors. In GRS 1915+105 we have not detected the Doppler-shifted emission lines observed in the classic stellar source of relativistic jets, SS 433. We discuss why it may be more difficult in GRS 1915+105 than in SS 433 to detect emission lines from the jets.

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