Testing Stellar Pollution by Accretion of Planetesimals

Details Testing Stellar Pollution by Accretion of Planetesimals Testing Stellar Pollution by Accretion of Planetesimals

Aug 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002noao.prop..193t&link_type=abstract

NOAO Proposal ID #2002B-0193

Physics

Scientific paper

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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