Probing populations of red giants in the galactic disk with CoRoT

  title={Probing populations of red giants in the galactic disk with CoRoT},
  author={Andrea Miglio and Josefina Montalb{\'a}n and Frédéric Baudin and Patrick Eggenberger and Arlette Noels and Saskia Hekker and Joris De Ridder and Werner W. Weiss and Annie Baglin},
  journal={arXiv: Solar and Stellar Astrophysics},
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 giants. We investigate which information on the observed population can be recovered by the distribution of the observed seismic constraints: the frequency of maximum oscillation power (nu_max) and the large frequency separation (Deltanu). We propose to use the observed distribution of nu_max and of… 

Figures from this paper

Characteristics of solar-like oscillations in red giants observed in the CoRoT exoplanet field
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
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
Detection of Solar-like Oscillations from Kepler Photometry of the Open Cluster NGC 6819
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
Asteroseismology of Red Giants from the First Four Months of Kepler Data: Global Oscillation Parameters for 800 Stars
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
Characterization of red giant stars in the public Kepler data
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 characterize the red giant (G-K) stars in this
The effects of stellar population synthesis on the distributions of the asteroseismic observables νmax and Δν of red-clump stars
The distributions of the frequency of maximum oscillation power (ν max ) and the large frequency separation (Δν) of red giant stars observed by the COnvection ROtation and planetary Transits (CoRoT)
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
Characteristics of solar-like oscillations of clusters simulated by stellar population synthesis
Using a stellar population-synthesis method, we studied the distributions of νmax and Δν of simulated clusters with various ages and metallicities. Except for the confirmed peak (RC peak) of Δν of
Spin down of the core rotation in red giants
Context. The space mission Kepler provides us with long and uninterrupted photometric time series of red giants. We are now able to probe the rotational behaviour in their deep interiors using the
Detection and Characterization of Oscillating Red Giants: First Results from the TESS Satellite
Since the onset of the “space revolution” of high-precision high-cadence photometry, asteroseismology has been demonstrated as a powerful tool for informing Galactic archeology investigations. The


Non-radial oscillation modes with long lifetimes in giant stars
The presence of radial and non-radial oscillations in more than 300 giant stars is reported, finding giant stars with equally spaced frequency peaks in the Fourier spectrum of the time series, as well as giants for which the spectrum seems to be more complex.
A synthetic view on structure and evolution of the Milky Way
Since the Hipparcos mission and recent large scale surveys in the optical and the near-infrared, new constraints have been obtained on the structure and evolution history of the Milky Way. The
Population effects on the red giant clump absolute magnitude: The K-band
We present a detailed analysis of the behaviour of the red clump K-band absolute magnitude (MRCK) in simple and composite stellar populations, in light of its use as a standard candle for distance
Star counts in the Galaxy - Simulating from very deep to very shallow photometric surveys with the TRILEGAL code
We describe TRILEGAL, a new populations synthesis code for simulating the stellar photometry of any Galaxy field. The code attempts to improve upon several technical aspects of star count models, by:
A Large Stellar Evolution Database for Population Synthesis Studies. I. Scaled Solar Models and Isochrones
We present a large and updated stellar evolution database for low-, intermediate-, and high-mass stars in a wide metallicity range, suitable for studying Galactic and extragalactic simple and
Detection of possible p-mode oscillations on Procyon
In the course of a search for solar-like oscillations in bright late-type stars, Doppler variability was observed in the F5 subgiant Procyon. The variations have frequencies within a 1.1 mHz range
A Deep Multicolor Survey. IV. The Electronic Stellar Catalog
We make available in electronic form the stellar catalog of 19,494 objects from the Deep Multicolor Survey (DMS). The DMS is based on CCD imaging with the Mayall 4 m telescope in U, B, V, R', I75,
ESO imaging survey - Deep public survey: Multi-color optical data for the Chandra Deep Field South
This paper presents multi-passband optical data obtained from observations of the Chandra Deep Field South (CDF-S), located at 3 h 32 m , 2748 0 . The observations were conducted at the ESO/MPG 2.2 m
The Kepler asteroseismic investigation
The NASA Kepler mission for studies of extra-solar planets, with expected launch early in 2009, will provide a large set of excellent data for asteroseismology. Here we provide a brief presentation
A secondary clump of red giant stars: why and where
Based on the results of detailed population synthesis models, Girardi et al. recently claimed that the clump of red giants in the colour–magnitude diagram (CMD) of composite stellar populations