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The last decade has seen a rapid development in asteroseismology thanks to the CoRoT and Kepler missions. With more detailed asteroseismic observations available, it is becoming possible to infer exactly how oscillations are driven and…

Solar and Stellar Astrophysics · Physics 2020-06-03 Yixiao Zhou , Martin Asplund , Remo Collet , Meridith Joyce

Space-borne missions CoRoT and {\it Kepler} are providing a rich harvest of high-quality constraints on solar-like pulsators. Among the seismic parameters, mode damping rates remains poorly understood and thus barely used to infer physical…

Solar and Stellar Astrophysics · Physics 2012-04-03 K. Belkacem , M. A. Dupret , F. Baudin , T. Appourchaux , J. P. Marques , R. Samadi

Clear power excess in a frequency range typical for solar-type oscillations in red giants has been detected in more than 1000 stars, which have been observed during the first 138 days of the science operation of the NASA Kepler satellite.…

The evolved solar-type stars 16 Cyg A & B have long been studied as solar analogs, yielding a glimpse into the future of our own Sun. The orbital period of the binary system is too long to provide meaningful dynamical constraints on the…

The observations carried out by the space missions CoRoT and Kepler provide a large set of asteroseismic data. Their analysis requires an efficient procedure first to determine if the star is reliably showing solar-like oscillations, second…

Solar and Stellar Astrophysics · Physics 2015-05-14 B. Mosser , T. Appourchaux

Of the more than 150000 targets followed by the Kepler Mission, about 10% were selected as red giants. Due to their high scientific value, in particular for Galaxy population studies and stellar structure and evolution, their Kepler light…

Solar and Stellar Astrophysics · Physics 2015-06-12 D. Stello , D. Huber , T. R. Bedding , O. Benomar , L. Bildsten , Y. P. Elsworth , R. L. Gilliland , B. Mosser , B. Paxton , T. R. White

The NASA K2 mission that succeeded the nominal Kepler mission observed several hundreds of thousands of stars during its operations. While most of the stars were observed in single campaigns of 80 days, some of them were targeted for more…

Asteroseismology involves probing the interiors of stars and quantifying their global properties, such as radius and age, through observationsof normal modes of oscillation. The technical requirements for conducting asteroseismology include…

Over 2,000 stars were observed for one month with a high enough cadence in order to look for acoustic modes during the survey phase of the Kepler mission. Solar-like oscillations have been detected in about 540 stars. The question of why no…

Solar and Stellar Astrophysics · Physics 2019-07-03 S. Mathur , R. A. Garcia , L. Bugnet , A. R. G. Santos , N. Santiago , P. G. Beck

By combining ground-based spectrographic observations of variability in the chromospheric emission from Sun-like stars with the variability seen in their eigenmode frequencies, it is possible to relate the changes observed at the surfaces…

Solar and Stellar Astrophysics · Physics 2019-03-27 C. Karoff , T. S. Metcalfe , B. T. Montet , N. E. Jannsen , A. R. G. Santos , M. B. Nielsen , W. J. Chaplin

Oscillations occur in stars of most masses and essentially all stages of evolution. Asteroseismology is the study of the frequencies and other properties of stellar oscillations, from which we can extract fundamental parameters such as…

Astrophysics · Physics 2009-11-13 Hans Kjeldsen , Timothy R. Bedding , Joergen Christensen-Dalsgaard

Current and future space-based observatories such as the Transiting Exoplanet Survey Satellite (TESS) and PLATO are set to provide an enormous amount of new data on oscillating stars, and in particular stars that oscillate similar to the…

Solar and Stellar Astrophysics · Physics 2022-07-20 M. B. Nielsen , E. Hatt , W. J. Chaplin , W. H. Ball , G. R. Davies

Asteroseismology of solar-type stars has entered a new era of large surveys with the success of the NASA \textit{Kepler} mission, which is providing exquisite data on oscillations of stars across the Hertzprung-Russell (HR) diagram. From…

For a solar-like star, the surface rotation evolves with time, allowing in principle to estimate the age of a star from its surface rotation period. Here we are interested in measuring surface rotation periods of solar-like stars observed…

Solar and Stellar Astrophysics · Physics 2019-06-25 S. N. Breton , L. Bugnet , A. R. G. Santos , A. Le Saux , S. Mathur , P. L. Palle , R. A. Garcia

We developed, tested and validated a new Fast, Robust and Automated (FRA) tool to detect solar-like oscillations. FRA is based on the detection and measurement of the frequency of maximum oscillation power $\nu_{max}$, without relying on…

Solar and Stellar Astrophysics · Physics 2023-06-27 C. Gehan , T. L. Campante , M. S. Cunha , F. Pereira

In recent years there has been some progress towards detecting solar-like oscillations in stars. The goal of this challenging project is to analyse frequency spectra similar to that observed for the Sun in integrated light. In this context…

Astrophysics · Physics 2009-10-30 F. Perez Hernandez , J. Christensen-Dalsgaard

The Kepler mission is providing photometric data of exquisite quality for the asteroseismic study of different classes of pulsating stars. These analyses place particular demands on the pre-processing of the data, over a range of timescales…

We briefly review progress in developing a pathway to nonlinear astereoseismology, both from theoretical and observational aspects. As predicted by the theory of weak nonlinear interactions between resonant modes, their amplitude and…

Solar and Stellar Astrophysics · Physics 2023-02-07 Weikai Zong , Stéphane Charpinet , Gérard Vauclair , Jian-Ning Fu , Xiao-Yu Ma

The launch of NASA's Kepler space telescope in 2009 revolutionized the quality and quantity of observational data available for asteroseismic analysis. While Kepler was able to detect solar-like oscillations in hundreds of main-sequence and…

Solar and Stellar Astrophysics · Physics 2023-08-04 Travis S. Metcalfe , Richard H. D. Townsend , Warrick H. Ball