Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982sval....8..260s&link_type=abstract
(Pis'ma v Astronomicheskii Zhurnal, vol. 8, Aug. 1982, p. 481-484) Soviet Astronomy Letters (ISSN 0360-0327), vol. 8, July-Aug.
Astronomy and Astrophysics
Astronomy
1
B Stars, Interstellar Matter, Molecular Clouds, Stellar Spectra, Stellar Spectrophotometry, Calcium, Infrared Spectra, Interstellar Extinction, K Lines, Spectral Energy Distribution, Stellar Envelopes, Stellar Evolution, Ultraviolet Spectra
Scientific paper
Spectroscopic and photometric observations of the heavily reddened star HDE 283809 located in the direction of the Taurus dark cloud show that it belongs to spectral type B3; but at the same time it has a strong Ca II K line and a peculiar spectral energy distribution, with diminished violet and ultraviolet intensity but enhanced red and infrared emission. If the star does belong to the Taurus star-formation complex, its peculiarity might result from instability or the presence of a circumstellar envelope. If it is a galactic background star, it could be a binary, with the secondary component a late-type giant.
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