Long-Term Variability in Young Nearby Stars

Details Long-Term Variability in Young Nearby Stars Long-Term Variability in Young Nearby Stars

Jan 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21541806r&link_type=abstract

American Astronomical Society, AAS Meeting #215, #418.06; Bulletin of the American Astronomical Society, Vol. 42, p.275

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Scientific paper

The sun's 22-year magnetic cycle is a well-documented phenomenon. Less widely studied are the magnetic cycles of stars other than the sun. Light curves of stars exhibiting short-term (periods on the order of days) variability were obtained from the ASAS archive. In several examples, the amplitude of the short-term variation appears to vary with a period of several years. We investigate the possibility that this long-term periodic amplitude variation is tied to variations in star-spot activity caused by the stars’ magnetic cycles. We use simple computer models approximating star-spot activity to try to reproduce the behavior shown by these stars.

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