NOAO >   Observing Info >   Approved Programs >   2012A-0572

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Proposal Information for 2012A-0572


PI: Claude Mack, Vanderbilt University, claude.e.mack@vanderbilt.edu
Address: Physics Department, VU Station B 1807, Nashville, TN 37235, USA

CoI: Keivan Stassun, Vanderbilt University
CoI: Simon Schuler, NOAO
CoI: Jill Bechtold, Steward Observatory/UA
CoI: Luan Ghezzi, Observatorio Nacional
CoI: Leslie Hebb, Vanderbilt University
CoI: Phillip Cargile, Vanderbilt University
CoI: Joshua Pepper, Vanderbilt University
CoI: Yilen Gomez Maqueo Chew, Vanderbilt University
CoI: Francesca Faedi, Queen's University Belfast
CoI: Susana Barros, Queen's University Belfast

Title: Detailed chemical abundance analysis of planet-hosting wide binaries

Abstract: The aim of this proposal is to derive detailed abundances of planet host stars in wide binary systems. These systems are sufficiently wide enough to rule out tidal interactions in the past, and we can observe each star separately. We will obtain very high signal-to-noise (~300) echelle spectra of the planet host star and its binary companion for six systems, and we will compare the detailed abundances of each pair, including refractory and volatile elements, as well as the important element lithium. Each star in a given binary is expected to have the same initial composition, and by directly comparing their present-day abundances, we can study whether planet formation alters the composition of the host star. If we find that there is a chemical signature for planet formation, then this will be a powerful tool for more efficient and focused planet searches.


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NOAO >   Observing Info >   Approved Programs >   2012A-0572

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