Circumstellar Dust in the Magellanic Clouds

Details Circumstellar Dust in the Magellanic Clouds Circumstellar Dust in the Magellanic Clouds

Sep 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004sptz.prop..200h&link_type=abstract

Spitzer Proposal ID #200

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Scientific paper

This program will obtain low-resolution spectra of approximately 50 evolved stars in the Large and Small Magellanic Clouds known or suspected to exhibit a dust component on their infrared spectra. The goal is to obtain a representative sample of dust emission from evolved stars born in a metal-poor environment to (1) produce templates of dusty sources for use in interpreting the spectra of star-burst and blue compact dwarf galaxies obtained in the SBGAL_DEVOST and JRH_BCD program and (2) compare to similar samples of galactic sources obtained by ISO. Both objectives require a sample of as wide a variety of sources as possible, from both the LMC and SMC, including Miras (both short-period and long-period), irregular variables, MS stars, full S stars, carbon stars associated with both optically thin and thick shells, OH/IR stars, and supergiants. More evolved sources observed in other programs will supplement this list.

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