CI CYG : the stage of case C mass transfer.
Abstract
Spectroscopic and spectrophotometric observations of the symbiotic star CI Cyg were carried out during 1979-1981. The following new properties of this object were found out: This object consists of an M type bright giant; MV = -2.0, and a main sequence star. The M type star just fills its Roche critical lobe. A mass transfer with a rate of approximately 0.003 solar masses/yr is anticipated. The transferred mass is accreted by the main sequence star via a disk. The luminosity of the main sequence star is close to its Eddington critical luminosity. A part of the accreted mass may be lost from the main sequence star as a radiatively driven outflowing wind. The matter in the nebular component may be supplied by this wind.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- December 1982
- Bibcode:
- 1982A&A...116..210I
- Keywords:
-
- Binary Stars;
- Cygnus Constellation;
- M Stars;
- Stellar Mass Accretion;
- Giant Stars;
- Main Sequence Stars;
- Mass Transfer;
- Stellar Spectrophotometry;
- Astrophysics