Untangling the Accretion Spots on Classical T Tauri Stars

Details Untangling the Accretion Spots on Classical T Tauri Stars Untangling the Accretion Spots on Classical T Tauri Stars

Sep 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004cxo..prop.1645m&link_type=abstract

Chandra Proposal ID #06200432

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Chandra Proposal Id #06200432

Scientific paper

Many Classical T Tauri Stars (CTTS) possess accretion spots where magnetically funneled material crashes onto the photosphere from the surrounding disk. As the star rotates, so does the spot, yielding a clear periodicity in the optical light curves. The same regular variation should be present in the X-ray emission despite complicating factors such as flares; however, this effect has never been conclusively proved. We propose to separate the X-ray spectrum of the chromosphere from that of the accretion spot by observing GK and GI Tau at four different phases in their rotation. By comparing the X-ray spectra at minimum and maximum occultation, we can isolate the accretion process from other X-ray activity in these stars.

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