H-alpha line emission and infrared excess in Be stars

Details H-alpha line emission and infrared excess in Be stars H-alpha line emission and infrared excess in Be stars

Jul 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985ap%26ss.113..373g&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 113, no. 2, July 1985, p. 373-381.

Astronomy and Astrophysics

Astrophysics

12

B Stars, Emission Spectra, H Alpha Line, Infrared Spectra, Stellar Spectra, Variable Stars, Continuous Spectra, Stellar Envelopes, Stellar Luminosity

Scientific paper

The Hα observations of a selected sample of bright Be stars are presented. The available infrared observations at K band (2.2 μm) of these stars have been used to find the infrared excess emission. The analysis of the combined data show that LHα, the luminosity of the Hα emission line, is proportional to LIR, the luminosity of the infrared excess emission. The linear correlation between LIR and LHα shows that both the infrared excess and the Hα line originate in a common region. It is also detected that the infrared excess emission is produced throughout the whole envelope whereas the Hα is emitted in some defined region of the circumstellar envelope.

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