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arXiv · 1412.4848

What asteroseismology can do for exoplanets

Vincent Van Eylen·Mikkel N. Lund·Victor Silva Aguirre·Torben Arentoft·Hans Kjeldsen·Simon Albrecht·William J. Chaplin·Howard Isaacson·May G. Pedersen·Jens Jessen-Hansen·Brandon Tingley·Joergen Christensen-Dalsgaard·Conny Aerts·Tiago L. Campante·Steve T. Bryson
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Abstract

We describe three useful applications of asteroseismology in the context of exoplanet science: (1) the detailed characterisation of exoplanet host stars; (2) the measurement of stellar inclinations; and (3) the determination of orbital eccentricity from transit duration making use of asteroseismic stellar densities. We do so using the example system Kepler-410 (Van Eylen et al. 2014). This is one of the brightest (V = 9.4) Kepler exoplanet host stars, containing a small (2.8 Rearth) transiting planet in a long orbit (17.8 days), and one or more additional non-transiting planets as indicated by transit timing variations. The validation of Kepler-410 (KOI-42) was complicated due to the presence of a companion star, and the planetary nature of the system was confirmed after analyzing a Spitzer transit observation as well as ground-based follow-up observations.

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Vincent Van Eylen, Mikkel N. Lund, Victor Silva Aguirre, Torben Arentoft, Hans Kjeldsen, Simon Albrecht, William J. Chaplin, Howard Isaacson, May G. Pedersen, Jens Jessen-Hansen, Brandon Tingley, Joergen Christensen-Dalsgaard, Conny Aerts, Tiago L. Campante, Steve T. Bryson. 2015-05-13. What asteroseismology can do for exoplanets. https://doi.org/10.1051/epjconf%2F201510102005

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