What asteroseismology can do for exoplanets
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.
Cite
@article{arxiv.1412.4848,
title = {What asteroseismology can do for exoplanets},
author = {Vincent Van Eylen and Mikkel N. Lund and Victor Silva Aguirre and Torben Arentoft and Hans Kjeldsen and Simon Albrecht and William J. Chaplin and Howard Isaacson and May G. Pedersen and Jens Jessen-Hansen and Brandon Tingley and Joergen Christensen-Dalsgaard and Conny Aerts and Tiago L. Campante and Steve T. Bryson},
journal= {arXiv preprint arXiv:1412.4848},
year = {2015}
}
Comments
4 pages, Proceedings of the CoRoT Symposium 3 / Kepler KASC-7 joint meeting, Toulouse, 7-11 July 2014. To be published by EPJ Web of Conferences