Time Resolved, High-Dispersion Spectroscopy of RS CVn Binary V711 Tau

Details Time Resolved, High-Dispersion Spectroscopy of RS CVn Binary V711 Tau Time Resolved, High-Dispersion Spectroscopy of RS CVn Binary V711 Tau

Jun 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aspc..362...80t&link_type=abstract

The Seventh Pacific Rim Conference on Stellar Astrophysics, ASP Conference Series, Vol. 362, Proceedings of the conference held

Astronomy and Astrophysics

Astrophysics

Scientific paper

To investigate the mechanisms of stellar flares, we carried out spectroscopic observations of an RS CVn binary V711 Tau with a high dispersion (R=30,000) and a high time resolution (about 30 sec) as well as simultaneous photometric observations. Although no large flare was unfortunately detected during our observations, time-dependent variations in the Hα region were found by correlation-analyses. We conclude that these variations probably originate from the rotation of the primary star with an active region strongly emitting Hα. In addition, unprecedented time dependent variations in the Na D doublet were found.

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