Flares in the emission line of the Wolf-Rayet star HD 191765

Details Flares in the emission line of the Wolf-Rayet star HD 191765 Flares in the emission line of the Wolf-Rayet star HD 191765

Aug 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991kfnt....7...48z&link_type=abstract

Kinematika i Fizika Nebesnykh Tel (ISSN 0233-7665), vol. 7, July-Aug. 1991, p. 48-50. In Russian.

Computer Science

Emission Spectra, Stellar Flares, Stellar Spectrophotometry, Wolf-Rayet Stars, Line Spectra, Variability

Scientific paper

The monitoring of the brightness of HD 191765 in two narrow-band filters has shown an unusual mode of activity with a period of about 7.442 d. The He II 485.9 nm emission line exhibits sawtooth variations with a quasi-period of about 250 s and short-lived flares on a time scale of 5-7 s. Flare events in the emission line are accompanied by drops in the continuum on a time scale of 5-7 s.

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