Kepler Detected Gravity-Mode Period Spacings in a Red Giant Star

Autor(en)

P. G. Beck, T. R. Bedding, B. Mosser, D. Stello, R. A. Garcia, T. Kallinger, S. Hekker, Y. Elsworth, S. Frandsen, F. Carrier, J. De Ridder, C. Aerts, T. R. White, D. Huber, M.-A. Dupret, J. Montalbán, A. Miglio, A. Noels, W. J. Chaplin, H. Kjeldsen, J. Christensen-Dalsgaard, R. L. Gilliland, T. M. Brown, S. D. Kawaler, S. Mathur, J. M. Jenkins

Abstrakt

Stellar interiors are in accessible through direct observations. For this reason, helioseismologists made use of the Sun’s acoustic oscillation modes to tune models of its structure. The quest to detect modes that probe the solar core has been ongoing for decades. We report the detection of mixed modes penetrating all the way to the core of anevolved star from 320 days of observations with the Kepler satellite.The period spacings of these mixed modes are directly dependent on the density gradient between the core region and the convective envelope.

Organisation(en)

Institut für Astrophysik, Bibliotheks- und Archivwesen

Externe Organisation(en)

Katholieke Universiteit Leuven, The University of Sydney, Université de recherche Paris Sciences et Lettres, Université Paris VII - Paris-Diderot, University of British Columbia (UBC), University of Birmingham, University of Amsterdam (UvA), Radboud University, Université de Liège, Aarhus University, Space Telescope Science Institute, Las Cumbres Observatory Global Telescope, Iowa State University, National Center for Atmospheric Research (NCAR), National Aeronautics & Space Administration (NASA)

Journal

Science

Band

332

Seiten

205

ISSN

0036-8075

DOI

https://doi.org/10.1126/science.1201939

Publikationsdatum

04-2011

Peer-reviewed

Ja

ÖFOS 2012

103004 Astrophysik

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/9151eea2-2f0d-430e-834c-6260b935a9e0