Skip to Main content Skip to Navigation
Journal articles

Standing on the shoulders of Dwarfs: the $Kepler$ asteroseismic LEGACY sample I - oscillation mode parameters

Abstract : The advent of space-based missions like $Kepler$ has revolutionized the study of solar-type stars, particularly through the measurement and modeling of their resonant modes of oscillation. Here we analyze a sample of 66 $Kepler$ main-sequence stars showing solar-like oscillations as part of the $Kepler$ seismic LEGACY project. We use $Kepler$ short-cadence data, of which each star has at least 12 months, to create frequency power spectra optimized for asteroseismology. For each star we identify its modes of oscillation and extract parameters such as frequency, amplitude, and line width using a Bayesian Markov chain Monte Carlo `peak-bagging' approach. We report the extracted mode parameters for all 66 stars, as well as derived quantities such as frequency difference ratios, the large and small separations $\Delta\nu$ and $\delta\nu_{02}$; the behavior of line widths with frequency and line widths at $\nu_{\rm max}$ with $T_{\rm eff}$, for which we derive parametrizations; and behavior of mode visibilities. These average properties can be applied in future peak-bagging exercises to better constrain the parameters of the stellar oscillation spectra. The frequencies and frequency ratios can tightly constrain the fundamental parameters of these solar-type stars, and mode line widths and amplitudes can test models of mode damping and excitation.
Complete list of metadata

Cited literature [167 references]  Display  Hide  Download
Contributor : Yveline Lebreton Connect in order to contact the contributor
Submitted on : Thursday, October 15, 2020 - 2:11:39 PM
Last modification on : Tuesday, October 19, 2021 - 7:01:47 PM


Lund et al-2017-Standing on th...
Files produced by the author(s)



Mikkel N. Lund, Victor Silva Aguirre, Guy R. Davies, William J. Chaplin, Jørgen Christensen-Dalsgaard, et al.. Standing on the shoulders of Dwarfs: the $Kepler$ asteroseismic LEGACY sample I - oscillation mode parameters. The Astrophysical Journal, American Astronomical Society, 2017, 835 (2), pp.172. ⟨10.3847/1538-4357/835/2/172⟩. ⟨hal-01407387⟩



Record views


Files downloads