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Signatures of Earth-Like Planets in the Chemical Composition of Solar-Type Stars

Published online by Cambridge University Press:  29 April 2014

Jorge Meléndez
Affiliation:
Departamento de Astronomia do IAG/USP, Universidade de São Paulo, Rua do Matão 1226, Cidade Universitária, 05508-900 São Paulo, SP, Brazil. email: jorge@astro.iag.usp.br
Iván Ramírez
Affiliation:
McDonald Observatory and Department of Astronomy, University of Texas at Austin, 2515 Speedway, Stop C1400, Austin, Texas 78712-1205
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Abstract

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The formation of terrestrial and gas giant planets has likely imprinted signatures on the chemical composition of their parent stars, as shown for example by the higher occurrence of giant planets for higher stellar metallicities. There are two new signatures that have been recently proposed by Meléndez et al. (2009, 2012) and Ramírez et al. (2009, 2010) for the formation of rocky planets, and by Ramírez et al. (2011) for gas giant planets. We review here our on-going work on the planet-star connection using solar twins, for which chemical abundances are being obtained at unprecedented precision (0.01 dex).

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2014 

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