Open AccessKepler Detected Gravity-Mode Period Spacings in a Red Giant Star
Author(s) -
P. G. Beck,
T. R. Bedding,
B. Mosser,
Dennis Stello,
R. A. García,
T. Kallinger,
S. Hekker,
Y. Elsworth,
S. Frandsen,
F. Carrier,
J. De Ridder,
C. Aerts,
T. R. White,
Daniel Huber,
M.-A. Dupret,
J. Montalbán,
A. Miglio,
A. Noels,
W. J. Chaplin,
H. Kjeldsen,
J. ChristensenDalsgaard,
Ronald L. Gilliland,
Timothy M. Brown,
S. D. Kawaler,
S. Mathur,
Jon M. Jenkins
Publication year - 2011
Publication title -
science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 12.556
H-Index - 1186
eISSN - 1095-9203
pISSN - 0036-8075
DOI - 10.1126/science.1201939
Subject(s) - asteroseismology , physics , red giant , astrophysics , astronomy , stars , red giant branch , giant star , stellar evolution , radius , red clump , bulge , globular cluster , computer science , computer security
International audienceStellar interiors are inaccessible 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 an evolved 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 envelop
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