ASTEROSEISMIC DIAGRAMS FROM A SURVEY OF SOLAR-LIKE OSCILLATIONS WITH KEPLER

作者：White Timothy R^*; Bedding Timothy R; Stello Dennis; Appourchaux Thierry; Ballot Jerome; Benomar Othman; Bonanno Alfio; Broomhall Anne Marie; Campante Tiago L; Chaplin William J; Christensen Dalsgaard Jorgen; Corsaro Enrico; Dogan Gulnur; Elsworth Yvonne P; Fletcher Stephen T; Garcia Rafael A; Gaulme Patrick; Handberg Rasmus; Hekker Saskia; Huber Daniel; Karoff Christoffer; Kjeldsen Hans; Mathur Savita; Mosser Benoit; Monteiro Mario J P F G; Regulo Clara

来源：Astrophysical Journal Letters, 2011, 742(1): L3.

DOI：10.1088/2041-8205/742/1/L3

• stars: oscillations

Photometric observations made by the NASA Kepler Mission have led to a dramatic increase in the number of main-sequence and subgiant stars with detected solar-like oscillations. We present an ensemble asteroseismic analysis of 76 solar-type stars. Using frequencies determined from the Kepler time-series photometry, we have measured three asteroseismic parameters that characterize the oscillations: the large frequency separation (Delta nu), the small frequency separation between modes of l = 0 and l = 2 (delta nu(02)), and the dimensionless offset (epsilon). These measurements allow us to construct asteroseismic diagrams, namely the so-called Christensen-Dalsgaard diagram of delta nu(02) versus Delta nu, and the recently re-introduced epsilon diagram. We compare the Kepler results with previously observed solar-type stars and with theoretical models. The positions of stars in these diagrams places constraints on their masses and ages. Additionally, we confirm the observational relationship between epsilon and T-eff that allows for the unambiguous determination of radial order and should help resolve the problem of mode identification in F stars.

• 出版日期2011-11-20
• 单位中国地震局