Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988esasp.281a.401b&link_type=abstract
In ESA, A Decade of UV Astronomy with the IUE Satellite, Volume 1 p 401-404 (SEE N89-10682 01-89)
Astronomy and Astrophysics
Astronomy
B Stars, Infrared Astronomy Satellite, Iue, Spaceborne Astronomy, Ultraviolet Astronomy, Ultraviolet Spectra, Infrared Spectra, Spectral Line Width, Stellar Spectra
Scientific paper
New IUE observations were obtained of 35 Be stars from a list of stars which show excess infrared fluxes in IRAS data. The IRAS-selected Be stars show larger C IV and Si IV equivalent widths than other Be stars. Excess C IV and Si IV absorption seems to be independent of spectral type for IRAS-selected Be stars later than spectral type B4. This is interpreted as evidence for a possible second mechanism acting in conjunction with radiation pressure for producing the winds in Be stars. No clear correlation of IR excess of v sin i with C IV or Si IV equivalent widths is seen, although a threshold for the occurrence of excess C IV and Si IV absorption appears at a v sin i of 150 km/sec.
Bjorkman Karen S.
Snow Theodore P.
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