Coronal activity cycles in solar analog stars

Details Coronal activity cycles in solar analog stars Coronal activity cycles in solar analog stars

Oct 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007xmm..prop....2f&link_type=abstract

XMM-Newton Proposal ID #05500603

Physics

Stars, White Dwarfs, Solar System, 61 Cyg, Alpha Cen, Hd 81809, Xmm-Newton Proposal Id #05500603

Scientific paper

A program to detect and study for the first time solar-like cyclic behavior in the X-ray emission of stars similar to our Sun has been ongoing since XMM s AO-1. Five targets in three stellar systems have been monitored since 2001, providing for the first time clear evidence of long-term cycles in the X-ray luminosity of normal stars, with variations in X-ray luminosity of up to an order of magnitude. The present proposal requests continuation of the ongoing monitoring program into XMM AO-7, needed to progress toward full confirmation of the coronal cycle and a well constrained determination of its period for our targets.

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