GALEX Ultraviolet Lightcurves of M-Dwarf Flare Stars

Details GALEX Ultraviolet Lightcurves of M-Dwarf Flare Stars GALEX Ultraviolet Lightcurves of M-Dwarf Flare Stars

May 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aas...206.4101w&link_type=abstract

American Astronomical Society Meeting 206, #41.01; Bulletin of the American Astronomical Society, Vol. 37, p.495

Astronomy and Astrophysics

Astronomy

Scientific paper

We present several high time-resolution (0.1 s) lightcurves of bright, short-duration (< 1000 s) flare events recorded at ultraviolet wavelengths (1350 - 2750 A) during the first 18 months of observations by the NASA Galaxy Evolution Explorer (GALEX). These outbursts originate on nearby M-dwarf (dMe) flare stars, and can result in a brightening of over 5 UV magnitudes in a period of less than 200 seconds.
We compare and contrast pre and post flare behavior in order to derive meaningful parameters that can be used as a general diagnostic tool of the complex emission structure often exhibited by these outbursts. Finally, we show plots of SDSS (g - r) and GALEX UV magnitudes that can be used to identify previously unknown active dM stars.
GALEX is a NASA Small Explorer. We gratefully acknowledge NASA's support for construction, operation, and science analysis for the GALEX mission.

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