# Standing on the Shoulders of Dwarfs: the Kepler Asteroseismic LEGACY Sample. I. Oscillation Mode Parameters

Research output: Contribution to journalArticlepeer-review

## Authors

• V. Silva Aguirre
• J. Christensen-Dalsgaard
• G. Houdek
• T. R. White
• T. R. Bedding
• D. Huber
• H. M. Antia
• Y. Lebreton
• D. W. Latham
• K. Verma
• S. Basu
• L. Casagrande
• A. B. Justesen
• H. Kjeldsen
• J. R. Mosumgaard

## 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 ${\rm{\Delta }}\nu$ and $\delta {\nu }_{02};$ the behavior of line widths with frequency and line widths at ${\nu }_{\max }$ with ${T}_{\mathrm{eff}}$, 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.

## Details

Original language English 172 1 The Astrophysical Journal 835 30 Jan 2017 Published - 1 Feb 2017

## Keywords

• stars: fundamental parameters, asteroseismology, stars: evolution, stars: oscillations