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Influences of Planets on Parent Stars: Abundances

Published online by Cambridge University Press:  26 May 2016

Norman Murray
Norman Murray*
Affiliation:
Canadian Institute for Theoretical Astrophysics, University of Toronto, 60 St. George st., Toronto, ON, M5S 3H8, Canada; Canada Research Chair in Astrophysics

Abstract

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The heavily cratered face of Mercury and the Moon bears mute testimony to the flux of smaller objects that bombarded the inner solar system in the first billion years after the sun formed. A significant fraction of these bodies likely struck the sun, slightly altering its surface abundances of heavy elements. Stellar pollution of this sort can be detected by looking at metallicities of carefully selected populations of stars of varying mass, e.g., in moderate age clusters, by searching for specific patterns in relative abundances in individual stars, or by looking for isotopic anomalies such as 6Li. I describe the current state of such studies.

Type
Part 7: Cool Stars and their Planets
Information
Symposium - International Astronomical Union , Volume 219: Stars as Suns : Activity, Evolution and Planets , 2004 , pp. 333 - 342
Copyright
Copyright © Astronomical Society of the Pacific 2004 

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