SOLVING THE MODE IDENTIFICATION PROBLEM IN ASTEROSEISMOLOGY OF F STARS OBSERVED WITHKEPLER

Timothy R. White, Timothy R. Bedding, Michael Gruberbauer, Othman Benomar, Dennis Stello, Thierry Appourchaux, William J. Chaplin, Jørgen Christensen-Dalsgaard, Yvonne P. Elsworth, Rafael A. García, Saskia Hekker, Daniel Huber (+5 others)
2012 Astrophysical Journal Letters  
Asteroseismology of F-type stars has been hindered by an ambiguity in identification of their oscillation modes. The regular mode pattern that makes this task trivial in cooler stars is masked by increased linewidths. The absolute mode frequencies, encapsulated in the asteroseismic variable epsilon, can help solve this impasse because the values of epsilon implied by the two possible mode identifications are distinct. We find that the correct epsilon can be deduced from the effective
more » ... and the linewidths and we apply these methods to a sample of solar-like oscillators observed with Kepler.
doi:10.1088/2041-8205/751/2/l36 fatcat:4hdxxlnrurfzdad3hhqoc53ndu