Spectroscopic observations of CH Cygni in 1977-1979

Details Spectroscopic observations of CH Cygni in 1977-1979 Spectroscopic observations of CH Cygni in 1977-1979

Apr 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26a....84..366f&link_type=abstract

Astronomy and Astrophysics, vol. 84, no. 3, Apr. 1980, p. 366-368.

Astronomy and Astrophysics

Astrophysics

5

Astronomical Spectroscopy, Companion Stars, Cygnus Constellation, Radial Velocity, Stellar Spectra, Variable Stars, Atmospheric Models, Line Spectra, Stellar Atmospheres

Scientific paper

A new outburst of CH Cygni has been observed spectroscopically with high dispersion at the Haute Provence Observatory. The results of the measurements of radial velocities on some of the spectra so far obtained are reported. The structure of the extended atmosphere is complex. The striking characteristic of the spectra in the period 1977-1979 is the simultaneous presence of P Cyg (H and K lines) and inverse P Cyg profiles (Balmer lines).

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