The spectrum of the symbiotic star CH CYG in December 1981

Details The spectrum of the symbiotic star CH CYG in December 1981 The spectrum of the symbiotic star CH CYG in December 1981

Jun 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982esasp.176..193h&link_type=abstract

In ESA 3rd European IUE Conf. p 193-195 (SEE N83-11889 02-88)

Computer Science

3

Cygnus Constellation, Spectral Energy Distribution, Stellar Spectra, Ultraviolet Spectra, Chromosphere, Iue, Stellar Mass Accretion, Stellar Mass Ejection, Ultraviolet Absorption, Variability

Scientific paper

The IUE observations of CH Cyg are discussed. The continuum energy distribution fits very well that of a late A supergiant. It is not clear whether this kind of continuum can be produced in a pseudo-photosphere formed in the chromospheric transition region of the M6 giant during the activity phases, or, (if CH Cyg is a semidetached binary system), in the accretion disk around the compact component. The presence of inverse P Cyg profiles in the Fe II lines can be interpreted in terms of infalling material, after an outburst associated with mass ejection. The presence of two shortward displaced absorption peaks of circumstellar origin in the Mg II emissions, at the same time with the Fe II inverse P Cyg profiles, indicates a complex dynamic structure around the star.

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