NOAO > Observing Info > Approved Programs > 2002B-0193
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NOAO > Observing Info > Approved Programs > 2002B-0193 |
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PI: Donald M. Terndrup, Ohio State University, terndrup.1@osu.edu
Address: 140 West 18th Avenue, Columbus, OH 43210, USA
CoI: Lew M. Hobbs, Yerkes Observatory, University of Chicago
CoI: Norman W. Murray, CITA, University of Toronto
CoI: Marc H. Pinsonneault, Ohio State University
CoI: Darren L. DePoy, Ohio State University
Title: Testing Stellar Pollution by Accretion of Planetesimals
Abstract:
The recent observations that planet-bearing stars typically have
very high metallicity has led to the suggestion that stars can accrete
metal-rich material from their circumstellar disks or protoplanetary
systems. We propose a test of one such scenario, namely the pollution
of the outer convective layers by small planetesimals, using the Hyades
cluster. Pollution would reveal itself in two ways: as a mass-dependent
metallicity over the temperature range in which stars develop deep
convection zones, and as a mass-dependent metallicity variance, or
scatter, over the same temperature range.
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 > 2002B-0193 |
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