CH Cygni in the transition to its cool phase

Details CH Cygni in the transition to its cool phase CH Cygni in the transition to its cool phase

Nov 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985ap%26ss.116..355p&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 116, no. 2, Nov. 1985, p. 355-365.

Astronomy and Astrophysics

Astrophysics

8

Blue Stars, Cool Stars, M Stars, Stellar Evolution, Subdwarf Stars, Symbiotic Stars, Variable Stars, Absorption Spectra, Balmer Series, Binary Stars, Emission Spectra, Stellar Luminosity, Stellar Spectrophotometry, Ubv Spectra

Scientific paper

The symbiotic variable CH Cyg is noted to have reached the 'blue maximum' phase of its recent outburst in the first half of 1984, in view of U, B, V observations (supplemented by spectrophotometric measurements) for 1982-1984; the latter indicate that the 'blue' continuum still observed at the beginning of July 1984, had disappeared by October-November 1984, while the strong absorption features typical of an M-type giant were reappearing. Attention is given to a substantial increase in the intensity of the emission features, especially of the Balmer lines, which occurred during this time interval.

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