Stellar Coronal EUV Emission Observed with the ROSAT Wide Field Camera
Abstract
The Wide Field Camera (WFC) on the ROSAT satellite conducted the first all-sky survey in the extreme ultraviolet (EUV) over the six month period beginning on 1990 July 30. Two survey filters were used peaking at 95 and 120 Angstroms . Many of the sources detected are coronal stars. We present detailed results from WFC survey data for a range of coronal stars, including a complete survey of the RS CVn systems in the Strassmeier catalog (40% detection rate), the EUV variability of the flare star EV Lac (including the largest flare seen by the WFC from a coronal source), the EUV rotation-activity relation for a homogeneous sample of single early K dwarfs, and WFC results forming part of the RIASS (ROSAT-IUE-All-Sky-Survey) campaign. This work is supported by NASA grant NAG 5-1792 to the University of Colorado.
- Publication:
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American Astronomical Society Meeting Abstracts
- Pub Date:
- December 1992
- Bibcode:
- 1992AAS...181.8012B