Radio detection of the Be star Psi Persei

Details Radio detection of the Be star Psi Persei Radio detection of the Be star Psi Persei

Oct 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987mnras.228..811t&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 228, Oct. 1, 1987, p. 811-817. ZWO-supported research.

Astronomy and Astrophysics

Astronomy

23

B Stars, Radio Stars, Balmer Series, Continuous Spectra, Disks, Equatorial Atmosphere, Radiant Flux Density, Stellar Mass Ejection

Scientific paper

The authors present the results of a VLA survey for radio emission from a sample of Be stars having strong excess emission in the IRAS bands. Radio emission was detected from one star, ψ Persei. The radio flux density, together with nearly simultaneous ultraviolet and near-infrared observations, argue strongly against a spherically symmetric model for the circumstellar envelope, thus favouring equatorial disc models. In general it is found that the spectral index of the excess emission increases between the radio and far-infrared, suggesting either increased acceleration of the outflow at large distances from the star, partial recombination of the outer regions of the disc or divergence of the equatorial disc at large radii.

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