Metallicities of 10-100 Myr Open Clusters with Debris Disks

Details Metallicities of 10-100 Myr Open Clusters with Debris Disks Metallicities of 10-100 Myr Open Clusters with Debris Disks

Jan 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21740601m&link_type=abstract

American Astronomical Society, AAS Meeting #217, #406.01; Bulletin of the American Astronomical Society, Vol. 43, 2011

Astronomy and Astrophysics

Astronomy

Scientific paper

We present chemical abundances obtained from moderate-resolution WIYN-Hydra and CTIO-Hydra spectra of F and G stars in six 10-100 Myr old open clusters observed at 24 microns with Spitzer Space Telescope, including M47, IC 2391, NGC 2232, and NGC 7160. Cluster metallicities are in the range [Fe/H] 0.0-0.3, and our results include abundances of alpha- and light-elements and additional Fe-peak elements. We also present archival Spitzer-MIPS 24 micron photometry for these clusters, to examine the fraction of B and A stars with excess MIR emission as a function of stellar metallicity. The aim of this program is to consider the role that stellar metallicity may play in debris disk frequency and longevity for B and A cluster stars.
Support for this work was provided by the NASA GSFC Graduate Student Researchers Program.

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