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| Paper: |
X-ray Variability in ROSAT Observations of M Stars |
| Volume: |
154, Cool Stars, Stellar Systems and the Sun: Tenth Cambridge Workshop |
| Page: |
1116 |
| Authors: |
Marino, A.; Micela, G.; Peres, G. |
| Abstract: |
We present preliminary results of a systematic analysis of X-ray light curves of the PSPC pointed observations of M stars contained in the CNS3 catalog. A large fraction of the sample stars show significant variations, regardless of the quiescent activity level. Variability is observed at all time scales we have explored, and the variations in X-ray luminosity are well related to variations in the hardness ratio of the spectra. We discuss the possible effect of variability on the spread observed in the X-ray luminosity function of M stars. |
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