Simultaneous optical photometric and spectroscopic observations of 2A0311-227

Details Simultaneous optical photometric and spectroscopic observations of 2A0311-227 Simultaneous optical photometric and spectroscopic observations of 2A0311-227

Jun 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26a....86l..10v&link_type=abstract

Astronomy and Astrophysics, vol. 86, no. 3, June 1980, p. L10-L13. Research supported by the Nederlandse Organisatie voor Zuive

Astronomy and Astrophysics

Astrophysics

17

Binary Stars, Stellar Spectrophotometry, X Ray Sources, X Ray Stars, Emission Spectra, Light Curve, Radial Velocity, Stellar Mass Accretion, Stellar Spectra, White Dwarf Stars

Scientific paper

A description is given of the results of simultaneous optical photometric and spectroscopic observations of the optical counterpart of the AM Her type X-ray binary 2A0311-227. The optical flux and the radial velocities and strengths of the emission lines vary regularly with the 81 minute orbital period. During a small fraction of the orbital cycle the emission lines at wavelengths greater than 5500 A turn into absorption. A qualitative model explaining the data is presented.

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