Spectral evolution and dust mixing in the recently erupted disk of EXLup

Details Spectral evolution and dust mixing in the recently erupted disk of EXLup Spectral evolution and dust mixing in the recently erupted disk of EXLup

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008sptz.prop..524a&link_type=abstract

Spitzer Proposal ID #524

Computer Science

Scientific paper

This proposal is a follow-up of our previous Spitzer DDT PID 477, where we observed the young eruptive star EX Lup during its outburst, and detected on-going silicate crystal formation for the first time in a young eruptive star. We argue that spectral evolution at mid-infrared wavelengths takes place also in the fading phase of the outburst, and we request two new IRS observations to complete our spectral monitoring program and document the spectral changes. The data will help to characterize the newly formed crystal population, and provide important insight into the mixing processes in the disk. Spitzer/IRS is the only instrument we could use for our program. We request 0.5 hours observing time. Since the propose date of the first observation is early October 2008, this is a time-critical program.

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