High Temporal Resolution Spectra of Flare Stars
Abstract
The results of a high temporal resolution spectroscopic monitoring of the UV Cet type fare stars AD Leo and V1054 Oph are reported. Intermediate resolution optical spectra of these stars were taken using the IDS spectrograph of the 2.5 m Isaac Newton Telescope (INT) of El Roque de los Muchachos Observatory (Spain) during 4 nights (2-5 April 2001). We have obtained high temporal resolution by taking series of spectra with short exposure times (15-300 sec) separated only by the CCD readout time (~60 sec). The great number of spectra observed each night has allowed us to analyse the temporal evolution of the emission lines and to identify several fares of different intensity and duration.
- Publication:
-
Stars as Suns : Activity, Evolution and Planets
- Pub Date:
- January 2004
- Bibcode:
- 2004IAUS..219..910M
- Keywords:
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- stars: flare;
- stars: chromospheres