Rethinking the rotation-activity classifications of cool single and binary stars

Details Rethinking the rotation-activity classifications of cool single and binary stars Rethinking the rotation-activity classifications of cool single and binary stars

Sep 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009cxo..prop.2780m&link_type=abstract

Chandra proposal ID #11200702

Physics

Scientific paper

The traditional Rossby Number based classification of cool stars into normal, saturated, and supersaturated, bears some resemblance to the striking (C/g/I) sequences seen in carefully constructed color-period diagrams of open clusters - but there are significant differences. These differences could be clues to understanding the dynamo transitions of cool stars, and to understand whether binaries fit within the classification scheme. We propose here to explore the rotation-activity classifications of cool single and binary stars using Chandra ACIS-I spectra of coronae in the rich, nearby open cluster M35 (exceptionally well-studied for rotation periods, membership and binary orbits). We will explore how the coronal flux and temperature change across the various proposed classifications.

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