Abstract

KAMIL, C.; DAL, H. A.; OZDARCAN, O.  and  YOLDAş, E.. γ Dor: A pulsating component of KIC 8043961 in a stellar triple system. Rev. mex. astron. astrofis [online]. 2020, vol.56, n.2, pp.179-191.  Epub Mar 24, 2021. ISSN 0185-1101.  https://doi.org/10.22201/ia.01851101p.2020.56.02.01.

We present new findings about KIC 8043961. We find the effective temperatures of the components as 6900±200 K for the primary, and 6598±200 K for the secondary, while the logarithm of the surface gravities are found to be 4.06 cm s−2 and 3.77 cm s−2, respectively. Combination of the light curve with the spectroscopic orbit model results leads to a mass ratio of 1.09 ± 0.07 with an orbital inclination of 73.71±0.14 and a semi-major axis of $8.05\pm 0.22R_{\odot }$. Masses of the primary and secondary components are calculated as $1.379\pm 0.109M_{\odot }$ and $1.513\pm 0.181M_{\odot }$, while the radii are found to be $1.806\pm 0.084R_{\odot }$ and $2.611\pm 0.059R_{\odot }$. In addition, we obtain a considerable light contribution ($\approx 0.54\%$) of a third body. We compute a possible mass for the third body as $0.778\pm 0.002M_{\odot }$. We find that the primary component exhibits γ Dor type pulsations with 137 frequencies.

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