HD 207739 - A strange composite star

Details HD 207739 - A strange composite star HD 207739 - A strange composite star

Jan 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...264l..19p&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 264, Jan. 1, 1983, p. L19-L23.

Astronomy and Astrophysics

Astrophysics

16

Absorption Spectra, B Stars, Eclipsing Binary Stars, Emission Spectra, Stellar Spectra, Ultraviolet Spectra, Far Ultraviolet Radiation, Late Stars, Magnesium, Main Sequence Stars, Stellar Envelopes, Stellar Temperature

Scientific paper

This star, classified F8 IIe + B:, has a very unusual ultraviolet spectrum, with abnormally strong and numerous absorption features in the far-UV and exceptionally strong Mg II emission. There is some resemblance to shell and pre-main-sequence B stars, but it more closely matches the strange spectra of the eclipsing systems VV Cep and SX Cas, and it probably has considerable circumstellar material at fairly high temperature. HD 207739 is probably an interacting binary and needs to be monitored for light and velocity variations.

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