Radio emission from Antares and an ionized cavity in its wind
1983; IOP Publishing; Volume: 275; Linguagem: Inglês
10.1086/161567
ISSN1538-4357
AutoresR. M. Hjellming, Raymond Newell,
Tópico(s)Astronomy and Astrophysical Research
Resumoview Abstract Citations (46) References (14) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Radio emission from Antares and an ionized cavity in its wind. Hjellming, R. M. ; Newell, R. T. Abstract 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. Publication: The Astrophysical Journal Pub Date: December 1983 DOI: 10.1086/161567 Bibcode: 1983ApJ...275..704H Keywords: 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; Astrophysics full text sources ADS | data products SIMBAD (2)
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