Spectroscopic and Photometric Observations of Transient Accretion Disks in U Cephei
Abstract
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.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- April 1989
- DOI:
- 10.1086/167307
- Bibcode:
- 1989ApJ...339..420K
- Keywords:
-
- Accretion Disks;
- Astronomical Photometry;
- Cepheus Constellation;
- Eclipsing Binary Stars;
- Stellar Spectra;
- Doppler Effect;
- Emission Spectra;
- Line Spectra;
- Transient Response;
- Astrophysics;
- STARS: ACCRETION;
- STARS: ECLIPSING BINARIES;
- STARS: INDIVIDUAL CONSTELLATION NAME: U CEPHEI