Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993aj....106.2000b&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 106, no. 5, p. 2000-2004
Astronomy and Astrophysics
Astronomy
6
A Stars, B Stars, Chromosphere, Emission Spectra, Radio Astronomy, Radio Emission, Radio Sources (Astronomy), Stellar Winds, Synchrotron Radiation, Deuterium, Flux Density, H Alpha Line, Iue, Pre-Main Sequence Stars, Stellar Mass Accretion, Very Large Array (Vla)
Scientific paper
Very Large Array (VLA) observations of the two bright Herbig Ae/Be stars HD 163296 and HR 5999 have been carried out at lambda 3.6 and 20 cm. We report the detection of a radio source at lambda 3.6 cm that may be associated with HD 163296. From the peak flux density of 0.39 mJy/beam area, we estimate a mass-loss rate of 1.8 x 10-8 solar mass/yr if the flux is due to free-free emission in an ionized wind with spherical symmetry, assuming a terminal wind velocity of 200 km/s. HR 5999 was not detected at either wavelength. We discuss the results in terms of the stellar-driven and accretion-driven scenarios for line and wind formation in Herbig Ae/Be stars.
Brown David A.
Perez Mario R.
Yusef-Zadeh Farah
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