Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...20916003p&link_type=abstract
2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #160.03; Bulletin of the American Astronomical Society,
Astronomy and Astrophysics
Astronomy
Scientific paper
We present preliminary results of our investigation into the mass-loss from evolved stars in rich, well-studied clusters in the Large Magellanic Cloud (LMC) using data obtained with the Spitzer Space Telescope SAGE (Surveying the Agents of a Galaxy's Evolution) survey. We have obtained the 8 and 24 micron magnitudes of point sources toward 30 clusters in the LMC with a range of ages from 10^6 to 10^10 years, a spread in metallicity ([Fe/H]) from -2.0 to 0.0, and masses from 10^3 to 10^5 solar masses. Using the 8 and 24 micron fluxes as proxies for stellar mass loss, we calculate the normalized mass loss rates for the clusters in our sample. We use these data to explore the relationships between mass-loss, age, and metallicity, with the aim of developing a cluster mass-loss history for the LMC. Our further goal is to use these results in conjunction with knowledge of the star formation history of the LMC to investigate the LMC's chemical enrichment history.
Babler Brian
Block Martin M.
Blum Robert
Engelbracht Charles
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