An attempt to detect mass loss from Alpha Lyrae with the VLA

Details An attempt to detect mass loss from Alpha Lyrae with the VLA An attempt to detect mass loss from Alpha Lyrae with the VLA

Jul 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...294..646h&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 294, July 15, 1985, p. 646-648.

Astronomy and Astrophysics

Astronomy

9

A Stars, Infrared Astronomy Satellite, Stellar Envelopes, Stellar Mass Ejection, Poynting-Robertson Effect, Radiation Pressure, Thermal Emission

Scientific paper

The interpretation of the infrared excess from Alpha Lyrae as seen by the Infrared Astronomy Satellite in terms of thermal emission from a circumstellar shell of large particles follows from the recognition that small dust grains would be removed from the vicinity of the star by radiation pressure and Poynting-Robertson drag. However, this explanation is viable only if there is no resupply of small grains via mass loss from Alpha Lyr itself. Radio-continuum observations were used to constrain the stellar mass loss to less than 3.4 x 10 to the -10th solar mass/yr. The observations thus support the conclusion that the infrared excess is due to residual solid matter from the prestellar nebula.

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