A high-sensitivity survey of radio continuum emission from Herbig Ae/Be stars

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Abstract

view Abstract Citations (168) References (177) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS A High-Sensitivity Survey of Radio Continuum Emission from Herbig Ae/Be Stars Skinner, Stephen L. ; Brown, Alexander ; Stewart, Ron T. Abstract Results of a high-sensitivity VLA/Australia Telescope survey of radio continuum emission from the 57 Herbig Ae/Be stars and candidates in the 1984 catalog of Finkenzeller and Mundt are presented. Twelve stars were detected at the primary observing wavelength of 3.6 cm, on the basis that not less than 4 sigma radio sources lie within 1 arcsec of the optical positions. It is suggested that the radio emission is predominantly thermal and in many cases wind-related. The unusual eclipsing binary TY CrA is an exception and is classified as a nonthermal radio source on the basis of its decidedly negative spectral index (alpha = -1.2). A simple spherically symmetric free-fall accretion model is used to show that the predicted radio fluxes due to accretion at rates, estimated in the literature, of about 10 exp -6 to 10 exp -5 solar mass/yr are one to four orders of magnitude larger than observed. Publication: The Astrophysical Journal Supplement Series Pub Date: July 1993 DOI: 10.1086/191803 Bibcode: 1993ApJS...87..217S Keywords: A Stars; B Stars; Radio Emission; Sky Surveys (Astronomy); Circular Polarization; H Alpha Line; H Ii Regions; Stellar Mass Ejection; Stellar Models; Stellar Temperature; Very Large Array (Vla); Astronomy; RADIO CONTINUUM: STARS; STARS: EMISSION-LINE; BE; STARS: PRE--MAIN-SEQUENCE full text sources ADS | data products SIMBAD (60) MAST (1)

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