Influences of Planets on Parent Stars: Abundances

Details Influences of Planets on Parent Stars: Abundances Influences of Planets on Parent Stars: Abundances

Jan 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004iaus..219..333m&link_type=abstract

Stars as suns : activity, evolution and planets, Proceedings of the 219th symposium of the International Astronomical Union held

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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. Observations of transient absorption lines toward Beta Pictorus and other young stars hint that similar bombardments in other planetary systems may not be unusual. 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 Lithium 6. I will describe the current state of such studies.

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