The CoRoT target HD 49933 II. Comparison of theoretical mode amplitudes with observations

@article{Samadi2010TheCT,
  title={The CoRoT target HD 49933 II. Comparison of theoretical mode amplitudes with observations},
  author={R'eza Samadi and Hans-G. Ludwig and K'evin Belkacem and M-J. Goupil and Othman Benomar and Beno{\^i}t Mosser and M-A. Dupret and Fr'ed'eric Baudin and Thierry Appourchaux and Eric Michel},
  journal={Astronomy and Astrophysics},
  year={2010},
  volume={509}
}
Context. The seismic data obtained by CoRoT for the star HD 49933 enable us for the first time to measure directly the amplitudes and linewidths of solar-like oscillations for a star other than the Sun. From those measurements it is possible, as was done for the Sun, to constrain models of the excitation of acoustic modes by turbulent convection. Aims. We compare a stochastic excitation model described in Paper I with the asteroseismology data for HD 49933, a star that is rather metal poor and… Expand

Figures from this paper

The CoRoT target HD 49933 - I. Effect of the metal abundance on the mode excitation rates
Context. Solar-like oscillations are stochastically excited by turbulent convection at the surface layers of the stars. Aims. We study the role of the surface metal abundance on the efficiency of theExpand
Accurate p-mode measurements of the G0V metal-rich CoRoT target HD 52265
Context. The star HD 52265 is a G0V metal-rich exoplanet-host star observed in the seismology field of the CoRoT space telescope from November 2008 to March 2009. The satellite collected 117 days ofExpand
The solar-like CoRoT ? target HD 170987: spectroscopic and seismic observations
Context. The CoRoT mission is in its third year of observation and the data from the second long run in the galactic centre direction are being analysed. The solar-like oscillating stars that haveExpand
Amplitudes of solar-like oscillations in red giant stars - Evidence for non-adiabatic effects using CoRoT observations
Context. A growing number of solar-like oscillations has been detected in red giant stars thanks to the CoRoT and Kepler space-crafts. In the same way as for main-sequence stars, mode driving isExpand
Amplitude and lifetime of radial modes in red giant star spectra observed by Kepler
Context: the space-borne missions CoRoT and Kepler have provided photometric observations of unprecedented quality. The study of solar-like oscillations observed in red giant stars by theseExpand
Pulsation spectrum of δ Scuti stars: the binary HD 50870 as seen with CoRoT and HARPS
Aims. We present the results obtained with the CoRoT satellite for HD 50870, a δ Sct star which was observed for 114.4 d. The aim of these observations was to evaluate the results obtained for HDExpand
Stellar granulation as seen in disk-integrated intensity. II. Theoretical scaling relations compared with observations
Context. A large set of stars observed by CoRoT and Kepler shows clear evidence for the presence of a stellar background, which is interpreted to arise from surface convection, i.e., granulation.Expand
Stochastic excitation of acoustic modes in stars
For more than ten years, solar-like oscillations have been detected and frequencies measured for a growing number of stars with various characteristics (e.g. different evolutionary stages, effectiveExpand
A DISTANT MIRROR: SOLAR OSCILLATIONS OBSERVED ON NEPTUNE BY THE KEPLER K 2 MISSION
Starting in December 2014, Kepler K2 observed Neptune continuously for 49 days at a 1-minute cadence. The goals consisted of studying its atmospheric dynamics (Simon et al. 2016), detecting itsExpand
Turbulent eddy-time-correlation in the solar convective zone
Theoretical modeling of the driving processes of solar-like oscillations is a powerful way of understanding the properties of the convective zones of solar-type stars. In this framework, theExpand
...
1
2
...

References

SHOWING 1-2 OF 2 REFERENCES
The CoRoT target HD 49933 - I. Effect of the metal abundance on the mode excitation rates
Context. Solar-like oscillations are stochastically excited by turbulent convection at the surface layers of the stars. Aims. We study the role of the surface metal abundance on the efficiency of theExpand
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 DecemberExpand