Multi-frequency variations of the Wolf-Rayet system HD 193793. I - Infrared, X-ray and radio observations

Details Multi-frequency variations of the Wolf-Rayet system HD 193793. I - Infrared, X-ray and radio observations Multi-frequency variations of the Wolf-Rayet system HD 193793. I - Infrared, X-ray and radio observations

Apr 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990mnras.243..662w&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 243, April 15, 1990, p. 662-684.

Astronomy and Astrophysics

Astrophysics

238

Frequency Ranges, Infrared Astronomy, Radio Astronomy, Wolf-Rayet Stars, X Ray Astronomy, Light Curve, Missing Mass (Astrophysics), Stellar Mass, Stellar Winds

Scientific paper

Observations made of the Wolf-Rayet system HD 193793 over the 1979-1989 period in the radio, X-ray, and IR regions reveal great variations in all three regimes. The most complete coverage obtained was in the IR; attention is given to an IR outburst in 1985 during which the IR flux increased by as much as an order of magnitude over the course of several weeks, before slowly declining. The X-ray luminosity is 1-2 orders of magnitude greater than that of single O or WR stars, suggesting X-ray generation by interacting winds.

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