Optical Spectroscopy of the Symbiotic X-ray Binary Pulsar GX 1+4/V2116 OPH

Details Optical Spectroscopy of the Symbiotic X-ray Binary Pulsar GX 1+4/V2116 OPH Optical Spectroscopy of the Symbiotic X-ray Binary Pulsar GX 1+4/V2116 OPH

Dec 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aas...18510216r&link_type=abstract

American Astronomical Society, 185th AAS Meeting, #102.16; Bulletin of the American Astronomical Society, Vol. 26, p.1486

Astronomy and Astrophysics

Astronomy

Scientific paper

The X-ray pulsar GX 1+4 is unique among X-ray pulsars in being associated with a symbiotic giant companion, V2116 Oph. We present the results of optical spectroscopy of this system taken both during X-ray quiescence and during a bright X-ray outburst. In addition to providing an improved stellar classification of the companion, we establish a lack of observed correlation between the hard X-ray luminosity measured by GRO/BATSE and the optical emission line strenghts we measured simultaneously. Implications for the nature of mass transfer between the symbiotic giant and the neutron star are discussed.

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