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Related papers: Seismic inference of 57 stars using full-length Ke…

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Accurate and precise values of radii and masses of stars are needed to correctly estimate properties of extrasolar planets. We examine the effect of uncertainties in stellar model parameters on estimates of the masses, radii and average…

Solar and Stellar Astrophysics · Physics 2015-06-03 Sarbani Basu , Graham A. Verner , William J. Chaplin , Yvonne Elsworth

We present stellar and planetary properties for 1305 Kepler Objects of Interest (KOIs) hosting 2025 planet candidates observed as part of the California-Kepler Survey. We combine spectroscopic constraints, presented in Paper I, with stellar…

Lithium abundance A(Li) and surface rotation are good diagnostic tools to probe the internal mixing and angular momentum transfer in stars. We explore the relation between surface rotation, A(Li) and age in a sample of seismic…

The extensive stellar spectroscopic datasets that are available for studies in Galactic Archeaology thanks to, for example, the Gaia-ESO Survey, now benefit from having a significant number of targets that overlap with asteroseismology…

Stellar physical and dynamical properties are essential knowledge to understanding the structure, formation, and evolution of our Galaxy. We produced an all-sky uniformly derived catalog of stellar astrophysical parameters (APs; age, mass,…

Astrophysics of Galaxies · Physics 2022-07-06 M. Fouesneau , R. Andrae , T. Dharmawardena , J. Rybizki , C. A. L. Bailer-Jones , M. Demleitner

The internal properties of stars in the red-giant phase undergo significant changes on relatively short timescales. Long near-uninterrupted high-precision photometric timeseries observations from dedicated space missions such as CoRoT and…

Solar and Stellar Astrophysics · Physics 2017-06-28 S. Hekker , J. Christensen-Dalsgaard

Data from the space missions {\it Gaia}, {\it Kepler}, {\it CoRoT} and {\it TESS}, make it possible to compare parallax and asteroseismic distances. From the ratio of two densities $\rho_{\rm sca}/\rho_{\pi}$, we obtain an empirical…

Solar and Stellar Astrophysics · Physics 2021-05-11 Mutlu Yıldız , Sibel Örtel

Acoustic glitches are regions inside a star where the sound speed or its derivatives change abruptly. These leave a small characteristic oscillatory signature in the stellar oscillation frequencies. With the precision achieved by {\it…

Solar and Stellar Astrophysics · Physics 2017-03-08 Kuldeep Verma , Keyuri Raodeo , H. M. Antia , Anwesh Mazumdar , Sarbani Basu , Mikkel N. Lund , Víctor Silva Aguirre

We present revised basic stellar astrophysical parameters: masses, luminosities, ages and radii for 342 stars from PennState-Toru\'n Centre for Astronomy Planet Search. Atmospheric parameters for 327 stars are available from Zieli\'nski…

Solar and Stellar Astrophysics · Physics 2016-03-02 M. Adamczyk , B. Deka-Szymankiewicz , A. Niedzielski

Spectroscopic parameters (effective temperature, metallicity, etc) were determined for a large sample of ~100 red giants in the Kepler field, for which mass, radius, and evolutionary status had already been asteroseismologically…

Solar and Stellar Astrophysics · Physics 2016-02-03 Y. Takeda , A. Tajitsu , B. Sato , Y. -J. Liu , Y. -Q. Chen , G. Zhao

Studies of Galactic structure and evolution have benefitted enormously from Gaia kinematic information, though additional, intrinsic stellar parameters like age are required to best constrain Galactic models. Asteroseismology is the most…

The unparalleled photometric data obtained by NASA's Kepler Space Telescope has led to an improved understanding of stellar structure and evolution - in particular for solar-like oscillators in this context. Binary stars are fascinating…

Context. The Kepler space mission led to a large amount of high-precision time series of solar-like oscillators. Using a Bayesian analysis that combines asteroseismic techniques and additional ground-based observations, the mass, radius,…

Solar and Stellar Astrophysics · Physics 2016-11-30 J. De Ridder , G. Molenberghs , L. Eyer , C. Aerts

Accurate characterization of stellar populations is of prime importance to correctly understand the formation and evolution process of our Galaxy. The field of asteroseismology has been particularly successful in such an endeavor providing…

Solar and Stellar Astrophysics · Physics 2016-04-20 V. Silva Aguirre , L. Casagrande , A. Miglio

Asteroseismology is a powerful tool to measure the fundamental properties of stars and probe their interiors. This is particularly efficient for red giants because their modes are well detectable and give information on their deep layers.…

Solar and Stellar Astrophysics · Physics 2017-12-05 M. Benbakoura , P. Gaulme , J. McKeever , P. G. Beck , J. Jackiewicz , R. A. Garcia

The variations of kinematic parameters with age are considered for a sample of 15 402 thin-disk O--F stars with accurate $\alpha$, $\delta$, $\mu$, and $\pi>3$ mas from the Hipparcos catalogue and radial velocities from the PCRV catalogue.…

Solar and Stellar Astrophysics · Physics 2019-10-25 George Gontcharov

Scaling relations that link asteroseismic quantities to global stellar properties are important for gaining understanding of the intricate physics that underpins stellar pulsation. The common notion that all stars in an open cluster have…

We present the detailed spectroscopic analysis of 72 evolved stars, including the [Fe/H] determination for the whole sample. These metallicities, together with the Teff values and the absolute V magnitude derived from Hipparcos parallaxes,…

Asteroseismology provides fundamental stellar parameters independent of distance, but subject to systematics under calibration. Gaia DR2 has provided parallaxes for a billion stars, which are offset by a parallax zero-point. Red Clump (RC)…

Recent analyses of FGK stars in open clusters have helped clarify the precision with which a star's rotation rate and lithium content can be used as empirical indicators for its age. Here we apply this knowledge to stars observed by Kepler.…

Solar and Stellar Astrophysics · Physics 2024-10-10 Luke G. Bouma , Lynne A. Hillenbrand , Andrew W. Howard , Howard Isaacson , Kento Masuda , Elsa K. Palumbo