Studies of the FU Orionis stars. II - The H-alpha line in V1057 Cygni

Details Studies of the FU Orionis stars. II - The H-alpha line in V1057 Cygni Studies of the FU Orionis stars. II - The H-alpha line in V1057 Cygni

Oct 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983pazh....9..622k&link_type=abstract

(Pis'ma v Astronomicheskii Zhurnal, vol. 9, Oct. 1983, p. 622-626) Soviet Astronomy Letters (ISSN 0360-0327), vol. 9, Sept.-Oct.

Astronomy and Astrophysics

Astronomy

1

H Alpha Line, Stellar Spectra, Variable Stars, Astronomical Spectroscopy, Cygnus Constellation, Orion Constellation, Stellar Flares, Stellar Mass Ejection, T Tauri Stars, Visible Spectrum

Scientific paper

Measurements of the Hα-absorption line radial velocity in the spectrum of the fuor V1057 Cyg carried out using 1974 - 1982 spectrograms are presented adding the analogous data for 1971 - 1975 published by Herbig (1977). The following conclusions are made: a) the 1969 - 1970 optical flare of the star was accompanied by high-velocity ejections of matter, b) a nonstationary continuous outflow of matter takes place at the stage of brightness decrease.

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