Asteroseismology of the heartbeat star KIC 5006817

TL;DR

This study performs a detailed asteroseismic analysis of the heartbeat star KIC 5006817 using Kepler and TESS data, deriving its stellar properties and confirming its binary classification.

Contribution

It provides the first comprehensive asteroseismic characterization of KIC 5006817, including stellar parameters and binary system properties, using state-of-the-art space data and analysis techniques.

Findings

Confirmed KIC 5006817 as a heartbeat binary.

Estimated stellar parameters: mass 1.53 M_sun, radius 5.91 R_sun.

Determined orbital period of 94.83 days.

Abstract

This paper summarizes the project work on asteroseismology at the ERASMUS+ GATE 2020 Summer school on space satellite data. The aim was to do a global asteroseismic analysis of KIC 5006817 and quantify its stellar properties using the high-quality, state of the art space missions data. We employed the aperture photometry to analyze the data from the Kepler space telescope and the Transiting Exoplanet Survey Satellite (TESS). Using the lightkurve Python package, we have derived the asteroseismic parameters and calculated the stellar parameters using the scaling relations. Our analysis of KIC 5006817 confirmed its classification as a heartbeat binary. The rich oscillation spectrum facilitate estimating power excess ($\nu_{\rm max}$) at 145.50$\pm$0.50 $\mu$Hz and large frequency separation ($\Delta\nu$) to be 11.63$\pm$0.10 $\mu$Hz. Our results showed that the primary component is a low-luminosity, red-giant branch star with a mass, radius, surface gravity, and luminosity of 1.53$\pm$0.07 M$_\odot$, 5.91$\pm$0.12 R$_\odot$, 3.08$\pm$0.01 dex, and 19.66$\pm$0.73 L$_\odot$, respectively. The orbital period of the system is 94.83$\pm$0.05 d.