Spectrophotometric studies of star HD 157978

Details Spectrophotometric studies of star HD 157978 Spectrophotometric studies of star HD 157978

Jul 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983ap%26ss..94....1h&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 94, no. 1, July 1983, p. 1-3.

Astronomy and Astrophysics

Astrophysics

A Stars, Line Spectra, Stellar Spectrophotometry, Helium, Hydrogen, Iron, K Lines, Manganese, Radial Velocity, Titanium

Scientific paper

Examination of the stellar spectrum of this star reveals that it has a composite spectrum. It could be classified as (A7V + G5V). It contains three forbidden [Fe II] lines which are of the essential features of η Carinae stars. The spectrum also contains H, He I, Fe II, Mn I, Ti II, and other different lines. The K-line seems to be sharp double line while other lines appear single ones which suggest early component may be double. This also seems to be true according to radial velocity measurements.

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