Evolutionary influences on the structure of red-giant acoustic oscillation spectra from 600d of Kepler observations
Kallinger, Thomas × Hekker, S Mosser, B De Ridder, Joris Bedding, T. R Elsworth, Y. P Gruberbauer, M Guenther, D. B Stello, D Basu, S Garcia, R. A Chaplin, W. J Mullally, F Still, M Thompson, S. E #
Astronomy & Astrophysics vol:541 pages:-
Context. It was recently discovered that the period spacings of mixed pressure/gravity dipole modes in red giants permit a distinction between the otherwise unknown evolutionary stage of these stars. The Kepler space mission is reaching continuous observing times long enough to also start studying the fine structure of the observed pressure-mode spectra.