Forecasting Life: A Study of Activity Cycles in Low-Mass Stars

Lessons from Long-Term Stellar Light Curves
Astrobiology

Abstract

Magnetic activity cycles are indirect traces of magnetic fields and can provide an insight on the nature and action of stellar dynamos and stellar magnetic activity. This, in turn, can determine local space weather and activity effects on stellar habitable zones. Using photometric monitoring of low-mass stars, we study the presence and properties of their magnetic activity cycles. We introduce long-term light curves of our sample stars, and discuss the properties of the observed trends, especially at spectral types where stars are fully convective (later than M3).

Keywords

Active stars Magnetic activity Activity cycles; Low-mass stars Habitable zone Space weather 

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Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  1. 1.NASA Astrobiology Institute, Department of Terrestrial MagnetismCarnegie Institution of WashingtonWashingtonUSA

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