Infrared spectroscopy of low-mass X-ray binaries

Details Infrared spectroscopy of low-mass X-ray binaries Infrared spectroscopy of low-mass X-ray binaries

Mar 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997mnras.285..718b&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 285, Issue 4, pp. 718-724.

Astronomy and Astrophysics

Astronomy

22

Accretion, Accretion Discs, Binaries: Close, Binaries: Spectroscopic, Infrared: Stars, X-Rays: Stars

Scientific paper

Using CGS4 on UKIRT, we have obtained the first 2.05-2.45 μm infrared spectra of the Galactic bulge low-mass X-ray binaries (LMXBs) GX1+4 and GX13+1. We report the detection of Brackett gamma emission from the accretion disc in both systems, confirming the identification of the IR counterpart to GX13+1. In addition, both spectra show CO molecular bands and metal lines in absorption, representing the first infrared spectroscopic detection of the secondary in a heavily obscured bulge source. We also present a JHK spectrum of the LMXB ScoX-1, which shows strong Hi, Hei and HeII emission.

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