A PRECISE ASTEROSEISMIC AGE AND RADIUS FOR THE EVOLVED SUN-LIKE STAR KIC 11026764

• Tipo: Artigo em Revista Científica Internacional
• Data: 2010

Autores

Metcalfe, TS (Autor) Outra; Monteiro, MJPFG (Autor) FCUP; Thompson, MJ (Autor) Outra; Molenda Zakowicz, J (Autor) Outra; Appourchaux, T (Autor) Outra; Chaplin, WJ (Autor) Outra; Dogan, G (Autor) Outra; Eggenberger, P (Autor) Outra; Bedding, TR (Autor) Outra; Bruntt, H (Autor) Outra; Creevey, OL (Autor) Outra; O Quirion (Autor) Outra; Stello, D (Autor) Outra; Bonanno, A (Autor) Outra; Silva S Aguirre (Autor) Outra; Basu, S (Autor) Outra; Esch, L (Autor) Outra; Gai, N (Autor) Outra; di Mauro, MP (Autor) Outra; Kosovichev, AG (Autor) Outra; Kitiashvili, IN (Autor) Outra; Suarez, JC (Autor) Outra; Moya, A (Autor) Outra; Piau, L (Autor) Outra; Garcia, RA (Autor) Outra; Marques, JP (Autor) Outra; Frasca, A (Autor) Outra; Biazzo, K (Autor) Outra; Sousa, SG (Autor) FCUP; Dreizler, S (Autor) Outra; Bazot, M (Autor) Outra; Karoff, C (Autor) Outra; Frandsen, S (Autor) Outra; Wilson, PA (Autor) Outra; Brown, TM (Autor) Outra; Christensen Dalsgaard, J (Autor) Outra; Gilliland, RL (Autor) Outra; Kjeldsen, H (Autor) Outra; Campante, TL (Autor) Outra; Fletcher, ST (Autor) Outra; Handberg, R (Autor) Outra; Regulo, C (Autor) Outra; Salabert, D (Autor) Outra; Schou, J (Autor) Outra; Verner, GA (Autor) Outra; Ballot, J (Autor) Outra; M Broomhall (Autor) Outra; Elsworth, Y (Autor) Outra; Hekker, S (Autor) Outra; Huber, D (Autor) Outra; Mathur, S (Autor) Outra; New, R (Autor) Outra; Roxburgh, IW (Autor) Outra; Sato, KH (Autor) Outra; White, TR (Autor) Outra; Borucki, WJ (Autor) Outra; Koch, DG (Autor) Outra; Jenkins, JM (Autor) Outra

Revista

Título: Astrophysical Journal

Vol. 723

Páginas: 1583-1598

ISSN: 0004-637X

Editora: American Astronomical Society

Indexação

ISI Web of Knowledge - 130 Citações

Scopus - 133 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Física

CORDIS: Ciências Físicas > Astronomia

Outras Informações

ID Authenticus: P-003-11E

DOI: 10.1088/0004-637x/723/2/1583

Abstract (EN): The primary science goal of the Kepler Mission is to provide a census of exoplanets in the solar neighborhood, including the identification and characterization of habitable Earth-like planets. The asteroseismic capabilities of the mission are being used to determine precise radii and ages for the target stars from their solar-like oscillations. Chaplin et al. published observations of three bright G-type stars, which were monitored during the first 33.5 days of science operations. One of these stars, the subgiant KIC 11026764, exhibits a characteristic pattern of oscillation frequencies suggesting that it has evolved significantly. We have derived asteroseismic estimates of the properties of KIC 11026764 from Kepler photometry combined with ground-based spectroscopic data. We present the results of detailed modeling for this star, employing a variety of independent codes and analyses that attempt to match the asteroseismic and spectroscopic constraints simultaneously. We determine both the radius and the age of KIC 11026764 with a precision near 1%, and an accuracy near 2% for the radius and 15% for the age. Continued observations of this star promise to reveal additional oscillation frequencies that will further improve the determination of its fundamental properties.

Idioma: Inglês

Tipo (Avaliação Docente): Científica