An X-ray activity cycle on the young solar-like star $\epsilon \ \rm Eridani$

25 Feb 2020 Coffaro M. Stelzer B. Orlando S. Hall J. Metcalfe T. S. Wolter U. Mittag M. Sanz-Forcada J. Schneider P. C. Ducci L.

In 2015 we started the XMM-Newton monitoring of the young solar-like star Epsilon Eridani (440 Myr), one of the youngest solar-like stars with a known chromospheric CaII cycle. By analyzing the most recent Mount Wilson S-index CaII data of this star, we found that the chromospheric cycle lasts 2.92 +/- 0.02 yr, in agreement with past results... (read more)

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