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  Bayesian hierarchical inference of asteroseismic inclination angles

Kuszlewicz, J. S., Chaplin, W. J., North, T. S. H., Farr, W. M., Bell, K. J., Davies, G. R., et al. (2019). Bayesian hierarchical inference of asteroseismic inclination angles. Monthly Notices of the Royal Astronomical Society, 488(1), 572-589. doi:10.1093/mnras/stz1689.

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 Creators:
Kuszlewicz, James S.1, Author           
Chaplin, William J, Author
North, Thomas S H, Author
Farr, Will M, Author
Bell, Keaton J.1, Author           
Davies, Guy R, Author
Campante, Tiago L, Author
Hekker, Saskia1, Author           
Affiliations:
1Max Planck Research Group in Stellar Ages and Galactic Evolution (SAGE), Max Planck Institute for Solar System Research, Max Planck Society, ou_2265636              

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 Abstract: The stellar inclination angle – the angle between the rotation axis of a star and our line of sight – provides valuable information in many different areas, from the characterization of the geometry of exoplanetary and eclipsing binary systems to the formation and evolution of those systems. We propose a method based on asteroseismology and a Bayesian hierarchical scheme for extracting the inclination angle of a single star. This hierarchical method therefore provides a means to both accurately and robustly extract inclination angles from red giant stars. We successfully apply this technique to an artificial data set with an underlying isotropic inclination angle distribution to verify the method. We also apply this technique to 123 red giant stars observed with Kepler. We also show the need for a selection function to account for possible population-level biases, which are not present in individual star-by-star cases, in order to extend the hierarchical method towards inferring underlying population inclination angle distributions.

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Language(s): eng - English
 Dates: 2019
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1093/mnras/stz1689
 Degree: -

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Title: Monthly Notices of the Royal Astronomical Society
  Other : Mon. Not. R. Astron. Soc.
Source Genre: Journal
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Publ. Info: Oxford : Oxford University Press
Pages: - Volume / Issue: 488 (1) Sequence Number: - Start / End Page: 572 - 589 Identifier: ISSN: 1365-8711
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000024150