2 documents found, page 1 of 1
THE ASTEROSEISMIC POTENTIAL OF KEPLER: FIRST RESULTS FOR SOLAR-TYPE STARS
Chaplin, WJ; Appourchaux, T; Elsworth, Y; Garcia, RA; Houdek, G; Karoff, C; Metcalfe, TS; Molenda Zakowicz, J; Monteiro, MJPFG; Thompson, MJ; Brown, TMWe present preliminary asteroseismic results from Kepler on three G-type stars. The observations, made at one-minute cadence during the first 33.5 days of science operations, reveal high signal-to-noise solar-like oscillation spectra in all three stars: about 20 modes of oscillation may be clearly distinguished in each star. We discuss the appearance of the oscillation spectra, use the frequencies and frequency...
The seismic structure of the sun
Gough, DO; Kosovichev, AG; Toomre, J; Anderson, E; Antia, HM; Basu, S; Chaboyer, B; Chitre, SM; ChristensenDalsgaard, J; Dziembowski, WA; EffDarwich, AGlobal Oscillation Network Group data reveal that the internal structure of the sun can be well represented by a calibrated standard model. However, immediately beneath the convection zone and at the edge of the energy-generating core, the sound-speed variation is somewhat smoother in the sun than it is in the model. This could be a consequence of chemical inhomogeneity that is too severe in the model, perhaps ...