Asteroseismic analysis of the CoRoT target HD 169392

TL;DR

This paper presents an asteroseismic analysis and modeling of the star HD 169392A using CoRoT satellite data and spectroscopic observations, providing detailed stellar parameters and insights into its internal structure.

Contribution

The study offers the first detailed asteroseismic analysis of HD 169392A, combining space-based data with spectroscopic measurements for comprehensive stellar modeling.

Findings

Determined stellar parameters: Teff=5985K, log g=3.96, [Fe/H]=-0.04.

Modeled the internal structure of HD 169392A.

Provided insights into the star's evolutionary state.

Abstract

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.