Spectroscopic and photometric observations of transient accretion disks in U Cephei

Details Spectroscopic and photometric observations of transient accretion disks in U Cephei Spectroscopic and photometric observations of transient accretion disks in U Cephei

Apr 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...339..420k&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 339, April 1, 1989, p. 420-433.

Astronomy and Astrophysics

Astrophysics

7

Accretion Disks, Astronomical Photometry, Cepheus Constellation, Eclipsing Binary Stars, Stellar Spectra, Doppler Effect, Emission Spectra, Line Spectra, Transient Response

Scientific paper

Combined spectroscopic and photometric observations of the Algol-type system U Cep performed during six eclipses in a three month interval are presented. Crawford's (1981) findings that the gas in the emission-line region does not rotate in a circular Keplerian fashion and that the emission lines are much broader than that expected from a solely rotationally broadened line are confirmed. It was found that, during one eclipse, a third emission line was visible through most of totality which may indicate mass loss from the system.

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