Cool Stars 14 - Submitted Abstract # 176
This version created on 05 October 2006

X-ray variability in main sequence field stars


Javier Lopez-Santiago, INAF - Osservatorio Astronomico di Palermo
Beate Stelzer, INAF - Osservatorio Astronomico di Palermo
Giusi Micela, INAF - Osservatorio Astronomico di Palermo
Salvatore Sciortino, INAF - Osservatorio Astronomico di Palermo

We present a systematic study on the X-ray variability in the coronal
emission of main-sequence field stars.  The light curves of the stars
in the Bright Source Sample (BSS) of XMM-Newton have been analyzed
using an automated procedure for revealing flares and detecting
variability.  We determine the total number of flares and intensity
and compare our results with those obtained for younger stellar
samples.

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