Red-giant seismic properties analyzed with CoRoT

  title={Red-giant seismic properties analyzed with CoRoT},
  author={Beno{\^i}t Mosser and K'evin Belkacem and M-J. Goupil and Andrea Miglio and Thierry Morel and Caroline Barban and Frédéric Baudin and Saskia Hekker and R'eza Samadi and Joris De Ridder and Werner W. Weiss and Michel Auvergne and Annie Baglin},
  journal={Astronomy and Astrophysics},
Context. The CoRoT 5-month long observation runs provide us with the opportunity to analyze a large variety of red-giant stars and derive their fundamental parameters from their asteroseismic properties. Aims. We perform an analysis of more than 4600 CoRoT light curves to extract as much information as possible. We take into account the characteristics of both the star sample and the method to ensure that our asteroseismic results are as unbiased as possible. We also study and compare the… 
Mixed modes in red-giant stars observed with CoRoT
Context. The CoRoT mission has provided thousands of red-giant light curves. The analysis of their solar-like oscillations allows us to characterize their stellar properties. Aims. Up to now, the
Red giant seismology: Observations
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
Asteroseismology of red giants from the first four months of Kepler data: Fundamental stellar parameters
Context. 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
Global asteroseismic properties of solar-like oscillations observed by Kepler: a comparison of complementary analysis methods
We present the asteroseismic analysis of 1948 F-, G- and K-type main-sequence and subgiant stars observed by the National Aeronautics and Space Administration Kepler mission. We detect and
Atmospheric parameters and chemical properties of red giants in the CoRoT asteroseismology fields
A precise characterisation of the red giants in the seismology fields of the CoRoT satellite is a prerequisite for further in-depth seismic modelling. High-resolution FEROS and HARPS spectra were
Characterization of the power excess of solar-like oscillations in red giants with Kepler
Context. The space mission Kepler provides us with long and uninterrupted photometric time series of red giants. This allows us to examine their seismic global properties and to compare these with
Differential asteroseismic study of seismic twins observed by CoRoT - Comparison of HD 175272 with HD 181420
Context. The CoRoT short asteroseismic runs give us the opportunity to observe a large variety of late-type stars through their solarlike oscillations. We report the observation and modeling of the
Seismic diagnostics of red giants: first comparison with stellar models
The clear detection with CoRoT and KEPLER of radial and non-radial solar-like oscillations in many red giants paves the way for seismic inferences on the structure of such stars. We present an
Solar-like oscillations in red giants observed with Kepler: comparison of global oscillation parameters from different methods
Context. The large number of stars for which uninterrupted high-precision photometric timeseries data are being collected with Kepler and CoRoT initiated the development of automated methods to
The CoRoT‐GES Collaboration: Improving red giants spectroscopic surface gravitity and abundances with asteroseismology
Nowadays large spectroscopic surveys, like the Gaia-ESO Survey (GES), provide unique stellar databases for better investigating the formation and evolution of our Galaxy. Great attention must be paid


Oscillating red giants in the CoRoT exofield: asteroseismic mass and radius determination
Context. Observations and analysis of solar-type oscillations in red-giant stars is an emerging aspect of asteroseismic analysis with a number of open questions yet to be explored. Although
On detecting the large separation in the autocorrelation of stellar oscillation times series
Context. 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 a star
Non-radial oscillations in the red giant HR 7349 measured by CoRoT
Context. Convection in red giant stars excites resonant acoustic waves whose frequencies depend on the sound speed inside the star, which in turn depends on the properties of the stellar interior.
Determining global parameters of the oscillations of solar-like stars
Context. Helioseismology has enabled us to better understand the solar interior, while also allowing us to better constrain solar models. But now is a tremendous epoch for asteroseismology as space
A fresh look at the seismic spectrum of HD49933: analysis of 180 days of CoRoT photometry
Context. Solar-like oscillations have now been observed in several stars, thanks to ground-based spectroscopic observations and space-borne photometry. CoRoT, which has been in orbit since December
Probing populations of red giants in the galactic disk with CoRoT
The detection with CoRoT of solar-like oscillations in nearly 800 red giants in the first 150-days long observational run paves the way for detailed studies of populations of galactic-disk red
Asteroseismology and interferometry of the red giant star Ophiuchi
The GIII red giant starOph has been found to exhibit several modes of oscillation by the MOST mission. We interpret the observed frequencies of oscillation in terms of theoretical radial p-mode
Seismic and spectroscopic characterization of the solar-like pulsating CoRoT target HD 49385
Context. The star HD 49385 is the first G-type solar-like pulsator observed in the seismology field of the space telescope CoRoT. The satellite collected 137 days of high-precision photometric data
Asteroseismology of stars in clusters has been a long-sought goal because the assumption of a common age, distance, and initial chemical composition allows strong tests of the theory of stellar
The CoRoT target HD 175726: an active star with weak solar-like oscillations
Context. The CoRoT short runs give us the opportunity to observe a large variety of late-type stars through their solar-like oscillations. We report observations of the star HD 175726 that lasted for