Search for X-ray flares in the Pleiades using SoHO LASCO C3 images.

Andrews, A. D.

Abstract

The detection threshold on LASCO C3 images was examined using the Pleiades cluster. It was found that 100 Pleiades stars to V = 10 were easily identified, and that some stars 4 magnitudes fainter than this could be detected. The brightness of the stellar corona at X-ray wavelengths, especially of active flare stars, may be the explanation for the very fine threshold.

2000 Irish Astronomical Journal
SOHO 2