Computer Science
Scientific paper
Jun 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005sptz.prop20663a&link_type=abstract
Spitzer Proposal ID #20663
Computer Science
Scientific paper
We propose to mine the Spitzer IRS data archive to complement our Spitzer IRAC/MIPS and XMM-Newton X-ray surveys of the Taurus Molecular Cloud (TMC). We will combine the Spitzer data with those obtained in the X-ray regime with XMM-Newton. Our goals are i) to reconstruct the detailed spectral energy distributions of young stellar objects in TMC. Our disk models will provide a comprehensive description of the circumstellar disks in young stars; ii) to combine infrared dust and gas modeling with X-ray spectroscopy. We will derive estimates of the total gas masses, of gas-to-dust ratios, and of disk surface ionization; iii) to determine the role of X-ray irradiation for heating, ionization, and disk chemistry. The Spitzer IRAC, MIPS, and IRS data in combination with the XMM-Newton data provide a unique opportunity to study in detail the structure and composition of circumstellar disks and envelopes in stars from the deeply embedded stage to the accretion-free stage of weak-lined T Tauri stars, and to determine the role of X-rays in these systems.
Audard Marc
Briggs Kevin
Fajardo-Acosta Sergio
Glauser Adrian
Guedel Manuel
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