Mass loss from the interacting contact binary SV CEN

Details Mass loss from the interacting contact binary SV CEN Mass loss from the interacting contact binary SV CEN

Apr 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980esasp.157..213d&link_type=abstract

The second European International Ultraviolet Explorer (IUE) Conference, held 26-28 March 1980 in Tübingen, West Germany. Edited

Astronomy and Astrophysics

Astronomy

4

Eclipsing Binary Stars, Iue, Mass Transfer, Stellar Mass Ejection, Ultraviolet Astronomy, Absorption Spectra, Angular Momentum, Doppler Effect, Extraterrestrial Radiation, Iron, Metal Ions, Photosphere, Radiation Pressure, Stellar Envelopes, Stellar Mass

Scientific paper

High resolution IUE spectrograms of the close eclipsing binary SV Cen (B1 (III) + B4) were taken near orbital phase 0.4 on 1979, November 3. The dominant spectral features are resonance lines of ionized metals (A1 (II), Mg (II), Si (IV), C (IV), etc.), and Fe (III) lines originating from metastable lower levels. The resonance line profiles are composed of a very broad stellar absorption feature of a total width of delta approximately 800 km sec and a strong absorption component shifted by approximately - 850 km/sec. The highly displaced resonance absorption lines prove the occurrence of mass loss. It is suggested that the angular momentum carried away by the ejected matter is responsible for the strong period decrease of SV Cen.

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