The optical counterpart of 4U 0115+63

Details The optical counterpart of 4U 0115+63 The optical counterpart of 4U 0115+63

Jul 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apj...247..222h&link_type=abstract

Astrophysical Journal, Part 1, vol. 247, July 1, 1981, p. 222, 224.

Astronomy and Astrophysics

Astrophysics

21

Astronomical Spectroscopy, Binary Stars, Optical Emission Spectroscopy, Stellar Spectra, X Ray Sources, Emission Spectra, H Alpha Line, Signal To Noise Ratios, Spectral Resolution

Scientific paper

The results of optical spectroscopy of 4U 0115+63 are presented. The spectrum shows no definite stellar line features in the data (signal-to-noise ratio, approximately 16; spectral resolution 2 A) except variable H-alpha emission. This emission has a moderate negative velocity and shows occasional absorption with a large blueshift. Interstellar absorptions are consistent with visual extinction of 3 mag or more.

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