The peculiar X-ray and radio star AS431

Details The peculiar X-ray and radio star AS431 The peculiar X-ray and radio star AS431

Jan 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985natur.313..376c&link_type=abstract

Nature (ISSN 0028-0836), vol. 313, Jan. 31, 1985, p. 376-378. Research supported by the Alfred P. Sloan Foundation.

Computer Science

38

Peculiar Stars, Radio Stars, Stellar Models, X Ray Sources, X Ray Stars, Companion Stars, Stellar Magnitude, Stellar Mass Ejection, Stellar Winds, Visible Spectrum, Wolf-Rayet Stars, X Ray Spectra

Scientific paper

During a systematic survey of X-ray flux-limited late-type stars, the authors have rediscovered a highly reddened emission-line star, previously listed as AS431. They report here Einstein observations revealing that AS431 has a highly absorbed X-ray spectrum and a relatively strong intrinsic flux of ≥5×10-12erg cm-2s-1. Observations at 20 cm and 6 cm with the VLA show that it is also a moderately strong radio source (≡35 mJy). These data, together with optical and infrared observations, suggest a model in which both the radio and X-ray emissions arise in a chaotic stellar wind emerging from a single luminous Wolf-Rayet star.

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