The diameter and evolutionary state of Procyon A. Multi-technique modeling using asteroseismic and i

@article{Kervella2003TheDA,
  title={The diameter and evolutionary state of Procyon A. Multi-technique modeling using asteroseismic and i},
  author={Pierre Kervella and F. Th{\'e}venin and P. Morel and Gabrielle Berthomieu and Pascal J. Bord{\'e} and Janine Provost},
  journal={Astronomy and Astrophysics},
  year={2003}
}
We report the angular diameter measurement obtained with the VINCI/VLTI instrument on the nearby star Procyon A ( α  CMi A, F5IV–V), at a relative precision of ± 0.9%. We obtain a uniform disk angular diameter in the K  band of $\theta_{\rm UD} = 5.376\pm0.047$ mas and a limb darkened value of $\theta_{\rm LD} = 5.448\pm0.053$ mas. Together with the hipparcos parallax, this gives a linear diameter of $2.048\pm0.025$ $D_{\odot}$. We use this result in combination with spectroscopic, photometric… 

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References

SHOWING 1-10 OF 36 REFERENCES
The diameters of $\alpha$ Centauri A and B - A comparison of the asteroseismic and VINCI/VLTI views
We compare the first direct angular diameter measurements obtained on our closest stellar neighbour, Centauri, to recent model diameters constrained by asteroseismic observations. Using the VINCI
A Redetermination of the Mass of Procyon
The parallax and astrometric orbit of Procyon have been redetermined from PDS measurements of over 250 photographic plates spanning 83 years, with roughly 600 exposures used in the solution. These
The interferometric diameter and internal structure of Sirius A
The interferometric observations of dwarf stars in the solar neighbourhood, combined with Hipparcos parallaxes provide very precise values of their linear diameters. In this paper, we report the
Evolution and Seismology of Procyon
We have calculated an array of stellar models for Procyon A that are based on the best physics available to us, including the latest opacities and nuclear cross sections. The array of models spans
PROCYON B: OUTSIDE THE IRON BOX
Procyon B is one of a select group of white dwarf stars in visual binaries that are used to put stringent constraints on the fundamental physics of stellar degeneracy. We present Space Telescope
COMPARISON OF STELLAR ANGULAR DIAMETERS FROM THE NPOI, THE MARK III OPTICAL INTERFEROMETER, AND THE INFRARED FLUX METHOD
The Navy Prototype Optical Interferometer (NPOI) has been used to measure the angular diameters of 41 late-type giant and supergiant stars previously observed with the Mark III optical
Stellar Turbulent Convection: A New Model and Applications
Improvements of the mixing-length theory (MLT) of turbulent convection in stellar atmospheres are developed theoretically. It is pointed out that inaccuracies are introduced into MLT by the
Search for p-mode Frequencies on Procyon A
. Following the recent evidence for the presence of an excess of power around 1 mHz in the frequency spectrum of the Doppler shift measurements for Procyon (Martie et al., 1999), we searched for
Further improvements of a new model for turbulent convection in stars
The effects of including a variable molecular weight and of using the newest opacities of Rogers and Iglesias (1991) as inputs to a recent model by Canuto and Mazzitelli (1991) for stellar turbulent
Updated Opal Opacities
The reexamination of astrophysical opacities has eliminated gross discrepancies between a variety of observations and theoretical calculations; thus allowing for more detailed tests of stellar
...
...