Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...275..251p&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 275, Dec. 1, 1983, p. 251-270.
Astronomy and Astrophysics
Astrophysics
53
Eclipsing Binary Stars, Magnetohydrodynamic Turbulence, Stellar Envelopes, Stellar Spectra, Stellar Temperature, Ultraviolet Spectra, Electron Energy, Emission Spectra, Far Ultraviolet Radiation, Radiant Flux Density, Stellar Mass Accretion
Scientific paper
U Cephei is a classical semidetached eclipsing binary of the Algol type, whose unusually high level of activity in the optical spectrum has long been recognized. This paper reports detection of numerous emission lines in the far-ultraviolet spectrum. For the first time, the line-emitting region has been studied both in emission and in absorption. It surrounds the hotter component and extends to a distance of several of its radii. A model is proposed in which the emission originates in a circumstellar region at an electron temperature of about 10,000K. This region is highly turbulent. The circumstellar material, coming from the Roche-filling secondary star, appears to have been at least partially processed by the CNO cycle.
No associations
LandOfFree
Far-ultraviolet emission lines in U Cephei - Evidence for a hot, turbulent circumstellar envelope does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Far-ultraviolet emission lines in U Cephei - Evidence for a hot, turbulent circumstellar envelope, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Far-ultraviolet emission lines in U Cephei - Evidence for a hot, turbulent circumstellar envelope will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1802557