IRAS 17380 - 3031 - A new dusty late WC-type Wolf-Rayet star

Details IRAS 17380 - 3031 - A new dusty late WC-type Wolf-Rayet star IRAS 17380 - 3031 - A new dusty late WC-type Wolf-Rayet star

Sep 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...378..302c&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 378, Sept. 1, 1991, p. 302-306.

Astronomy and Astrophysics

Astronomy

20

Cosmic Dust, Infrared Astronomy Satellite, Infrared Spectra, Late Stars, Wolf-Rayet Stars, Astronomical Photometry, Emission Spectra, Visible Spectrum

Scientific paper

Infrared photometry is presented of IRAS 17380 - 3031 and of IRAS 18405 - 0448, two of the proposed candidates for late WC-type stars suggested by Vok and Cohen (1989). Systematic 12-micron flux-limited surveys of the complete IRAS low-resolution spectrometer (LSR) data base show that late-type WC (WCL) stars with circumstellar dust emission have unique midinfrared spectra, suggesting a novel method for detecting such stars. It is confirmed through optical spectroscopy that IRAS 17380 - 3031, a prime LRS-selected WCL candidate, is a very red WCL star. It is classified as WC8 - 9, with a probable distance of 3 + or - 1 kpc, and a total extinction of about 12.5 mag. The confirmation demonstrates the power of the LRS technique for discovery of dusty WCL stars with IRAS.

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