Understanding X-ray emission from Young Stars

Details Understanding X-ray emission from Young Stars Understanding X-ray emission from Young Stars

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21341404s&link_type=abstract

American Astronomical Society, AAS Meeting #213, #414.04; Bulletin of the American Astronomical Society, Vol. 41, p.224

Astronomy and Astrophysics

Astronomy

Scientific paper

High-resolution X-ray observations over long integration times have advanced our understanding of the X-ray emitting plasmas of young stars. We have identified and are analyzing a sample of ten stars from the Chandra archives observed with the High Energy Transmission Grating Spectrometer (HETGS) spanning the various evolutionary phases (classical, weak-lined, post-T Tauri and main sequence) of young stars. We have identified flaring and quiescent periods, based on overall X-ray luminosity, for several of the stars. By measuring the X-ray line fluxes from these stars, we are able to discern temperatures, densities, and abundances that indicate the physical characteristics of the X-ray emitting plasmas. Of the analysis thus far, the temperature and density diagnostics for V987 Tau in quiescence indicate a cool, high density plasma.

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