1. Exploring Detached Eclipsing Binary Systems from TESS Observations: Insights into OBA-type Systems and Orbital Circularization
- Author
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Siqueira, L., Freitas, B. W., and de Freitas, D. B.
- Subjects
Astrophysics - Solar and Stellar Astrophysics - Abstract
This study presents photometric solutions for a carefully selected sample of 181 detached eclipsing binary systems recently observed by the Transiting Exoplanet Survey Satellite (TESS) mission. Our findings contribute to discussions about OBA-type systems and the orbital circularization influenced by tidal interactions. The results encompass crucial parameters, including the sum of radii fraction ($r_{\rm a}\,+\,r_{\rm b}$), radii ratio ($k$), orbital inclination ($i$), surface brightness ratio ($J$), and combinations of the longitude of the periastron and orbital eccentricity ($e\,\sin\,\omega$ and $e\,\cos\,\omega$). Geometric light curve fitting is performed using version 43 of the {\sc jktebop} code, serving as the primary tool for determining orbital elements and physical ratios. Careful uncertainty estimates for these findings are derived through bootstrap simulations. This work introduces unprecedented photometric solutions for 172 well-detached eclipsing systems, while the results for the remaining nine systems exhibit excellent agreement with those previously reported in the literature. Additionally, a critical primary radius fraction ($R_{\rm a}/a$) of 0.266 is identified for our sample of radiative envelope stars, consistent with observational and theoretical findings in the literature. Finally, we determine a circularization period of 5.762 days based on a function from the literature, revealing a discrepancy with Zahn's theory for hot stars., Comment: When we updated our paper, errors emerged in the figures due to JKTEBOP's limitations with our data. We chose the PHOEBE code, revealing significant discrepancies in results. JKTEBOP's susceptibility to noise also undermines result validity. Thus, we withdrawn the work, recognizing JKTEBOP's inadequacy in our data. Consequently, we have decided to discontinue this line of investigation
- Published
- 2024