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We have measured solar-like oscillations in red giants using time-series photometry from the first 34 days of science operations of the Kepler Mission. The light curves, obtained with 30-minute sampling, reveal clear oscillations in a large…

We have studied solar-like oscillations in ~800 red-giant stars using Kepler long-cadence photometry. The sample includes stars ranging in evolution from the lower part of the red-giant branch to the Helium main sequence. We investigate the…

Context. The advent of space-borne missions such as CoRoT or Kepler providing photometric data has brought new possibilities for asteroseismology across the H-R diagram. Solar-like oscillations are now observed in many stars, including red…

The length of the asteroseismic timeseries obtained from the Kepler satellite analysed here span 19 months. Kepler provides the longest continuous timeseries currently available, which calls for a study of the influence of the increased…

太阳与恒星天体物理 · 物理学 2015-06-05 S. Hekker , Y. Elsworth , B. Mosser , T. Kallinger , W. J. Chaplin , J. De Ridder , R. A. Garcia , D. Stello , B. D. Clarke , J. R. Hall , K. A. Ibrahim

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 Kepler mission has provided exquisite data to perform an ensemble asteroseismic analysis on evolved stars. In this work we systematically characterize solar-like oscillations and granulation for 16,094 oscillating red giants, using…

太阳与恒星天体物理 · 物理学 2018-06-13 Jie Yu , Daniel Huber , Timothy R. Bedding , Dennis Stello , Marc Hon , Simon J. Murphy , Shourya Khanna

Observations during the first long run (~150 days) in the exo-planet field of CoRoT increase the number of G-K giant stars for which solar-like oscillations are observed by a factor of 100. This opens the possibility to study the…

太阳与恒星天体物理 · 物理学 2015-05-13 S. Hekker , T. Kallinger , F. Baudin , J. De Ridder , C. Barban , F. Carrier , A. P. Hatzes , W. W. Weiss , A. Baglin

The first public release of long-cadence stellar photometric data collected by the NASA Kepler mission has now been made available. In this paper we characterise the red-giant (G-K) stars in this large sample in terms of their solar-like…

太阳与恒星天体物理 · 物理学 2015-05-27 S. Hekker , R. L. Gilliland , Y. Elsworth , W. J. Chaplin , J. De Ridder , D. Stello , T. Kallinger , K. A. Ibrahim , T. C. Klaus , J. Li

We have analyzed solar-like oscillations in ~1700 stars observed by the Kepler Mission, spanning from the main-sequence to the red clump. Using evolutionary models, we test asteroseismic scaling relations for the frequency of maximum power…

Solar-like oscillations in red giants have been investigated with CoRoT and Kepler, while pulsations in more evolved M giants have been studied with ground-based microlensing surveys. After 3.1 years of observation with Kepler, it is now…

太阳与恒星天体物理 · 物理学 2015-06-17 B. Mosser , W. A. Dziembowski , K. Belkacem , M. J. Goupil , E. Michel , R. Samadi , I. Soszynski , M. Vrard , E. Elsworth , S. Hekker , S. Mathur

With the success of the Kepler and CoRoT missions, the number of stars with detected solar-like oscillations has increased by several orders of magnitude, for the first time we are able to perform large-scale ensemble asteroseismology of…

太阳与恒星天体物理 · 物理学 2015-05-30 Timothy R. White , Timothy R. Bedding , Dennis Stello , Jørgen Christensen-Dalsgaard , Daniel Huber , Hans Kjeldsen

The paper presents a correction to the scaling relations for red-giant stars using model-based masses and radii. We measure radial-mode frequencies from Kepler observations for 3,642 solar-like oscillators on the red-giant branch and use…

太阳与恒星天体物理 · 物理学 2022-03-30 Tanda Li , Yaguang Li , Shaolan Bi , Timothy R. Bedding , Guy Davies , Minghao Du

The CoRoT and Kepler missions provide us with thousands of red-giant light curves that allow a very precise asteroseismic study of these objects. Before CoRoT and Kepler, the red-giant oscillation patterns remained obscure. Now, these…

太阳与恒星天体物理 · 物理学 2015-06-11 Benoit Mosser

The recently published Kepler mission Data Release 25 (DR25) reported on ~197,000 targets observed during the mission. Despite this, no wide search for red giants showing solar-like oscillations have been made across all stars observed in…

太阳与恒星天体物理 · 物理学 2019-03-13 Marc Hon , Dennis Stello , Rafael A. García , Savita Mathur , Sanjib Sharma , Isabel L. Colman , Lisa Bugnet

We present the asteroseismic analysis of 1948 F-, G- and K-type main-sequence and subgiant stars observed by the NASA {\em Kepler Mission}. We detect and characterise solar-like oscillations in 642 of these stars. This represents the…

The detection of solar-like oscillations in G and K giants with the CoRoT and Kepler space-based satellites allows robust constraints to be set on the mass and radius of such stars. The availability of these constraints for thousands of…

太阳与恒星天体物理 · 物理学 2015-05-30 Andrea Miglio

The recent launch of the Kepler space telescope brings the opportunity to study oscillations systematically in large numbers of solar-like stars. In the framework of the asteroFLAG project, we have developed an automated pipeline to…

Photometric time series gathered by space telescopes such as CoRoT and Kepler allow to detect solar-like oscillations in red-giant stars and to measure their global seismic constraints, which can be used to infer global stellar properties…

Time-resolved photometry of tens of thousands of red giant stars from space missions like Kepler and K2 has created the need for automated asteroseismic analysis methods. The first and most fundamental step in such analysis, is to identify…

太阳与恒星天体物理 · 物理学 2018-05-28 Marc Hon , Dennis Stello , Joel C. Zinn

We aim to describe the oscillation power excess observed in Kepler red giants, and to investigate empirical scaling relations governing these parameters. From these scalings relations, we derive new physical properties of red giant…

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