Determining distances using asteroseismic methods

Research output: Contribution to journalArticle

Authors

  • V. Silva Aguirre
  • L. Casagrande
  • S. Basu
  • D. Huber
  • A.M. Serenelli

Colleges, School and Institutes

External organisations

  • Aarhus University
  • Max Planck Institute for Astrophysics
  • The Australian National University
  • Yale University
  • NASA Ames Research Center
  • Facultad de Ciències

Abstract

Asteroseismology has been extremely successful in determining the properties of stars in different evolutionary stages with a remarkable level of precision. However, to fully exploit its potential, robust methods for estimating stellar parameters are required and independent verification of the results is needed. In this talk, I present a new technique developed to obtain stellar properties by coupling asteroseismic analysis with the infrared flux method. Using two global seismic observables and multi-band photometry, the technique determines masses, radii, effective temperatures, bolometric fluxes, and thus distances for field stars in a self-consistent manner. Applying our method to a sample of solar-like oscillators in the Kepler field that have accurate Hipparcos parallaxes, we find agreement in our distance determinations to better than 5 %. Comparison with measurements of spectroscopic effective temperatures and interferometric radii also validate our results, and show that our technique can be applied to stars evolved beyond the main-sequence phase.

Details

Original languageEnglish
Pages (from-to)22-25
Number of pages4
JournalAstronomische Nachrichten
Volume334
Issue number1-2
Publication statusPublished - 1 Feb 2013