NeII as a Tracer for X-Rays in Disks Around T Tauri Stars

Details NeII as a Tracer for X-Rays in Disks Around T Tauri Stars NeII as a Tracer for X-Rays in Disks Around T Tauri Stars

Sep 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009cxo..prop.2770g&link_type=abstract

Chandra proposal ID #11200332

Computer Science

Scientific paper

Although dust dominates the appearance of protoplanetary disks, the key processes for disk evolution, angular momentum and mass transport and planetesimal formation are driven through the dynamical state of the gas. In contrast to the dust component in disks, we do not have a similar knowledge of the gas component. One of the Spitzer breakthroughs was the detection of the [Ne II] line, proposed by Glassgold et al. (2007) to be a diagnostic for a warm disk surface layer that is heated and ionized by stellar X-rays. A correlation of the [Ne II] luminosity with the X-ray luminosity is expected. We aim at significantly enlarging the sample, specifically including targets with with transitional disks, low accretion and no jets or outflows.

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