NOAO > Observing Info > Approved Programs > 2012B-0077
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NOAO > Observing Info > Approved Programs > 2012B-0077 |
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PI: Catherine A Pilachowski, Indiana University, catyp@astro.indiana.edu
Address: Astronomy Department, 727 E 3rd Street, Bloomington, IN 47405-7105, USA
Title: Fluorine in Metal-Poor Stars with Phoenix
Abstract: \vspace0.2in Observations of the 2.3358 micron feature of the molecule HF with the Phoenix IR spectrograph on the 2.1-m telescope will be used to characterize the evolution of the abundance of fluorine in the context of the chemical evolution of the halo and thick disk of the Milky Way. The relative contributions of fluorine produced in AGB stars, in W-R stars, and in SN IIa varies with metallicity and with star formation history. Since fluorine is produced in different sites at different metallicities, and is sensitive to physical conditions at the sites of nucleosynthesis, it is potentially useful for chemically tagging stellar populations, but only if its abundance as a function of metallicity is understood in the disk and halo.
National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360
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NOAO > Observing Info > Approved Programs > 2012B-0077 |
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