Time-resolved spectroscopy of accretion disks in ALGOLS

Details Time-resolved spectroscopy of accretion disks in ALGOLS Time-resolved spectroscopy of accretion disks in ALGOLS

Jun 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989ssrv...50...51k&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

13

Accretion Disks, Eclipsing Binary Stars, H Beta Line, Stellar Mass Accretion, Stellar Spectrophotometry, Leading Edges, Trailing Edges

Scientific paper

Time-resolved spectroscopy during the eclipse of short-period Algol systems, has shown their accretion disks to be small, turbulent structures with non-Keplerian velocity fields and asymmetries between the leading and trailing sides of the disk. These transient disks are produced by the impact of the gas stream on the mass-gaining star, and occur in systems where the star is just large enough to ensure the stream collision is complete. These emission line disks and the excess continuum emission do not always occur together. The permanent accretion disks in at least a few of the long-period Algol systems have features in common with the transient disks including non-Keplerian velocity fields.

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