Radio emission from Antares and an ionized cavity in its wind

Details Radio emission from Antares and an ionized cavity in its wind Radio emission from Antares and an ionized cavity in its wind

Dec 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...275..704h&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 275, Dec. 15, 1983, p. 704-708.

Astronomy and Astrophysics

Astrophysics

28

Binary Stars, Radio Emission, Radio Stars, Red Giant Stars, Stellar Mass Ejection, Stellar Spectrophotometry, Stellar Winds, Supergiant Stars, B Stars, Brightness Temperature, Ionization, M Stars, Optical Thickness, Radiant Flux Density, Radio Spectra, Spectral Energy Distribution

Scientific paper

High resolution VLA observations of the Alpha Sco binary system, a M1.5 Iab star (Antares), and a B2.5 V star separated by 2.9 arcsec show optically thick, unresolved radio emission from Antares with a spectrum of 0.47nu(1.05)GHz mJy and observable structures in an approximately 5-arcsec portion of the Antares stellar wind which is ionized by the companion B star. The nebulosity is an optically thin ionized region with characteristics indicating a B-star Lyman continuum luminosity of 3 x 10 to the 43rd/s and an Antares mass loss rate of 2 x 10 to the -6th solar mass/yr at the observed ionization front between the Antares wind and the ionized subregion.

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