Tuesday, August 6, 2013

1308.0647 (S. Mathur et al.)

Asteroseismic analysis of the CoRoT target HD 169392    [PDF]

S. Mathur, H. Bruntt, C. Catala, O. Benomar, G. R. Davies, R. A. Garcia, D. Salabert, J. Ballot, B. Mosser, C. Regulo, W. J. Chaplin, Y. Elsworth, R. Handberg, S. Hekker, L. Mantegazza, E. Michel, E. Poretti, M. Rainer, I. W. Roxburgh, R. Samadi, M. Steslicki, K. Uytterhoeven, G. A. Verner, M. Auvergne, A. Baglin, S. Barcelo Forteza, F. Baudin, T. Roca Cortes
The satellite CoRoT (Convection, Rotation, and planetary Transits) has provided high-quality data for almost six years. We show here the asteroseismic analysis and modeling of HD169392A, which belongs to a binary system weakly gravitationally bound as the distance between the two components is of 4250 AU. The main component, HD169392A, is a G0IV star with a magnitude of 7.50 while the second component is a G0V-G2IV star with a magnitude of 8.98. This analysis focuses on the main component, as the secondary one is too faint to measure any seismic parameters. A complete modeling has been possible thanks to the complementary spectroscopic observations from HARPS, providing Teff=5985+/-60K, log g=3.96+/-0.07, and [Fe/H]=- 0.04+/-0.10.
View original: http://arxiv.org/abs/1308.0647

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