FK Comae, King of Spin: the Movie

Details FK Comae, King of Spin: the Movie FK Comae, King of Spin: the Movie

Sep 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010cxo..prop.3035a&link_type=abstract

Chandra proposal ID #12200943

Physics

Scientific paper

FK Comae is an ultra-fast rotating, single yellow giant, product of a recent W UMa merger. Extraordinary levels of FUV and X-ray emission rate FK Comae a coronal powerhouse on par with the most extreme short-period RS CVn binaries. As a single star, FK Comae has clear advantages as a laboratory for exploring high-energy activity. We will bring to bear Hubble's powerful Cosmic Origins Spectrograph, together with Chandra HETGS and groundbased Zeeman Doppler Imaging, to trace -- over two stellar rotations -- spatial relationships between bright FUV patches, extended X-ray emission zones, and the photospheric dark spots, to inform ideas of coronal structure and heating at the outer limits of magnetospheric activity among the coronal cool stars.

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