X-Ray Doppler Imaging of Stellar Coronae

Details X-Ray Doppler Imaging of Stellar Coronae X-Ray Doppler Imaging of Stellar Coronae

Apr 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aps..aprb17059b&link_type=abstract

American Physical Society, April Meeting, Jointly Sponsored with the High Energy Astrophysics Division (HEAD) of the American As

Astronomy and Astrophysics

Astrophysics

Scientific paper

Chandra HETG observations of the bright eclipsing contact binary 44 Boo show X-ray line profiles which are Doppler-shifted by orbital motions. The observation continuously covers 2.56 epochs. Although significant variability is found in the light curve, no clear eclipses are observed. The phase-binned line profiles, in conjunction with the X-ray light curve, constrain the coronal structures to be localized at high latitude. These observations demonstrate the power of the X-ray Doppler imaging technique. Studies of other contact binaries, and studies of RS CVn systems with future X-ray spectrometers are discussed.

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