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相关论文: Asteroseismic classification of stellar population…

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We studied solar-like oscillations in 115 red giants in the three open clusters NGC 6791, NGC 6811, and NGC 6819, based on photometric data covering more than 19 months with NASA's Kepler space telescope. We present the asteroseismic…

A star expands to become a red giant when it has fused all the hydrogen in its core into helium. If the star is in a binary system, its envelope can overflow onto its companion or be ejected into space, leaving a hot core and potentially…

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 present HD-TESS, a catalog of 1,709 bright ($V\sim3-10$) red giants from the Henry Draper (HD) Catalog with asteroseismic measurements based on photometry from NASA's Transiting Exoplanet Survey Satellite (TESS). Using light curves…

太阳与恒星天体物理 · 物理学 2022-09-21 Marc Hon , James S. Kuszlewicz , Daniel Huber , Dennis Stello , Claudia Reyes

The Kepler mission's primary goal is the detection and characterization of Earth-like planets by observing continuously a region of sky for a nominal period of three-and-a-half years. Over 100,000 stars will be monitored, with a small…

天体物理学 · 物理学 2014-11-18 Orlagh L. Creevey

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

The recent NASA TESS mission has the potential to increase the available asteroseismic sample dramatically, but its precision and accuracy have yet to be confirmed. To date, NASA's Kepler mission has been considered the gold standard for…

太阳与恒星天体物理 · 物理学 2023-07-27 Artemis Theano Theodoridis , Jamie Tayar

The availability of asteroseismic constraints for tens of thousands of red giant (RG) stars has opened the door to robust age estimates, enabling time-resolved studies of different populations of stars in the Milky Way. This study leverages…

The NASA satellite Kepler has gathered about 1420 days-long photometric time series for more than 20000 red giant stars. For about 6600 of them also APOGEE spectroscopic parameters are available, making the sample of high interest for…

太阳与恒星天体物理 · 物理学 2019-06-25 T. Kallinger

Despite their importance in stellar evolution, little is known about magnetic fields in the interior of stars. The recent seismic detection of magnetic fields in the core of several red giant stars has given measurements of their strength…

太阳与恒星天体物理 · 物理学 2023-02-15 S. Deheuvels , G. Li , J. Ballot , F. Lignières

While surface fields have been measured for stars across the HR diagram, internal magnetic fields remain largely unknown. The recent seismic detection of magnetic fields in the cores of several Kepler red giants has opened a new avenue to…

太阳与恒星天体物理 · 物理学 2023-09-26 Gang Li , Sébastien Deheuvels , Tanda Li , Jérôme Ballot , François Lignières

The large number of stars for which uninterrupted high-precision photometric timeseries data are being collected with \textit{Kepler} and CoRoT initiated the development of automated methods to analyse the stochastically excited…

The space-borne missions CoRoT and Kepler opened up a new opportunity for better understanding stellar evolution by probing stellar interiors with unrivalled high-precision photometric data. Kepler has observed stellar oscillation for four…

太阳与恒星天体物理 · 物理学 2021-06-16 G. Dréau , B. Mosser , Y. Lebreton , C. Gehan , T. Kallinger

Mass loss by red giants is an important process to understand the final stages of stellar evolution and the chemical enrichment of the interstellar medium. Mass-loss rates are thought to be controlled by pulsation-enhanced dust-driven…

太阳与恒星天体物理 · 物理学 2021-01-06 Jie Yu , Saskia Hekker , Timothy R. Bedding , Dennis Stello , Daniel Huber , Laurent Gizon , Shourya Khanna , Shaolan Bi

The Kepler space telescope monitors over 156.000 stars with an unprecedented photometric precision. We are interested in stellar rotational periods which we find using Lomb-Scargle periodograms. This work focuses on the 306 exoplanet…

太阳与恒星天体物理 · 物理学 2010-12-13 Timo Reinhold , Ansgar Reiners , Gibor Basri , Lucianne M. Walkowicz

Red-giant stars are emerging as one of the most interesting areas of space asteroseismology. Even a relatively basic analysis leads to the determination of the global parameters of the stars, such as their mass and radius, and the very…

太阳与恒星天体物理 · 物理学 2011-06-30 J. Christensen-Dalsgaard

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…

Context: The study of stellar structure and evolution depends crucially on accurate stellar parameters. The photometry from space telescopes has provided superb data that allowed asteroseismic characterisation of thousands of stars.…