Circumstellar matter in ALGOLS and Serpentids

Details Circumstellar matter in ALGOLS and Serpentids Circumstellar matter in ALGOLS and Serpentids

Jun 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989ssrv...50...95p&link_type=abstract

(IAU, NSERC, Canadian Institute of Theoretical Astrophysics, et al., Colloquium on Algols, 107th, Sidney, Canada, Aug. 15-19, 19

Astronomy and Astrophysics

Astrophysics

23

Accretion Disks, Binary Stars, Emission Spectra, Plasma Radiation, Plasma Spectra, Stellar Envelopes, Interstellar Extinction, Line Spectra, Ultraviolet Spectra

Scientific paper

A systematic search is reported for phenomena associated with circumstellar matter in interacting binary systems of the Algol and W Serpentis type. Ultraviolet emission lines have been detected by the author in 10 Algols and 6 Serpentids. No conspicuous difference exists between systems with disk accretion and those with direct stream impact. Evidence is indicated that the lines are formed predominantly by scattering in an induced stellar wind. Relative intensity of Fe II and Fe III emissions appears to be correlated with the spectral type of the gainer. It is suggested that in the Serpentids we see a thick disk nearly edge-on, but that the emission lines indicate the nature of the gainer inside.

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