Spectroscopic observations of VV CEP during the INGRESS phase of the 1976/1977 eclipse

Details Spectroscopic observations of VV CEP during the INGRESS phase of the 1976/1977 eclipse Spectroscopic observations of VV CEP during the INGRESS phase of the 1976/1977 eclipse

Mar 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978a%26a....64..253m&link_type=abstract

Astronomy and Astrophysics, vol. 64, no. 1-2, Mar. 1978, p. 253-258. Deutsche Forschungsgemeinschaft

Astronomy and Astrophysics

Astrophysics

6

B Stars, Eclipsing Binary Stars, M Stars, Stellar Spectra, Stellar Spectrophotometry, Balmer Series, Emission Spectra, H Lines, Line Spectra, O Stars, Stellar Atmospheres, Stellar Envelopes

Scientific paper

The paper reports spectroscopic observations of the phase when the hot companion of VV Cep gradually disappeared behind the primary star. The hot companion is surrounded by an extended Balmer-line-emitting envelope. The variations of the H-beta and H-gamma lines are followed by a densely spaced time series of spectrograms. The derived variations can be explained by a rotating ring-shaped envelope which gradually disappears behind the primary star.

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