ACIS Imaging Spectroscopy of T Tauri Stars in the Hst/cos Cycle 17 Large Project Sample

Details ACIS Imaging Spectroscopy of T Tauri Stars in the Hst/cos Cycle 17 Large Project Sample ACIS Imaging Spectroscopy of T Tauri Stars in the Hst/cos Cycle 17 Large Project Sample

Sep 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009cxo..prop.2781b&link_type=abstract

Chandra proposal ID #11200754

Physics

Scientific paper

High energy (X-ray+UV) radiation from young stars profoundly influences physical and chemical processes in their circumstellar environment. Gas and dust in protoplanetary systems are excited by these photons, which are the dominant ionization source for hundreds of AU around the star. X-rays penetrate deep into disks and power complex chemistry on grain surfaces. We have been awarded 111 HST orbits to conduct a Large Project to observe the UV spectra of a carefully chosen sample of 31 young stars with COS and STIS. Modeling the effects of their high energy radiation requires BOTH UV and X-ray spectra for this sample. We propose to use ACIS-S to obtain CCD-resolution spectra for the FIVE stars in this sample that currently have not been observed by either Chandra or XMM-Newton.

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