Are B-emission stars sources of soft x-ray emissions?

Details Are B-emission stars sources of soft x-ray emissions? Are B-emission stars sources of soft x-ray emissions?

Jan 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996cub..repts....s&link_type=abstract

Technical Report, Colorado Univ. Boulder, CO United States Center for Astrophysics and Space Astronomy.

Astronomy and Astrophysics

Astronomy

B Stars, X Rays, Stellar Radiation, X Ray Astronomy, Emission Spectra, Rosat Mission, Stellar Winds

Scientific paper

The goal was to determine whether B-emission stars are sources of soft x-ray emission, but no detections were achieved. B-emission (Be) stars are hot stars having circumstellar material and are more likely to have stellar winds than B stars of similar spectral type. Mass-loss rates are similar to those of the hotter and more luminous O and B stars, scaled for lower luminosity, thus suggesting the wind mechanism is similar. Since the O and B stars are also soft x-ray emitters, a natural follow-on was to see whether Be stars emit soft x-rays, and if so, whether the x-ray luminosity appears in the same proportion to optical luminosity. ROSAT observations failed to detect the two approved targets. The detection limits were insufficiently rigorous to preclude any hypothesis regarding possible x-ray emission from these stars.

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