NOAO >   Observing Info >   Approved Programs >   2002B-0193

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Proposal Information for 2002B-0193


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.


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