Title: Solar-like oscillations in the metal-poor subgiant nu Indi: Constraining the mass and age using asteroseismology
Authors: Bedding, Timothy R ×
Butler, R. Paul
Carrier, Fabien
Bouchy, Francois
Brewer, Brendon J
Eggenberger, Patrick
Grundahl, Frank
Kjeldsen, Hans
McCarthy, Chris
Nielsen, Tine Bjorn
Retter, Alon
Tinney, Christopher G #
Issue Date: Aug-2006
Publisher: Univ chicago press
Series Title: Astrophysical journal vol:647 issue:1 pages:558-563
Abstract: Asteroseismology is a powerful method for determining fundamental properties of stars. We report the first application to a metal-poor object, namely the subgiant star nu Ind. We measured precise velocities from two sites, allowing us to detect oscillations and infer a large frequency separation of Delta nu = 24.25 +/- 0: 25 mu Hz. Combining this value with the location of the star in the H-R diagram and comparing with standard evolutionary models, we were able to place constraints on the stellar parameters. In particular, our results indicate that nu Ind has a low mass (0.85 +/- 0.04 M-circle dot) and is at least 9 Gyr old.
ISSN: 0004-637X
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Institute of Astronomy
× corresponding author
# (joint) last author

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