γ Dor: A Pulsating Component of KIC 8043961 in a Stellar Triple System
Abstract
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 semimajor axis of 8.05 ± 0.22R_{⊙}. Masses of the primary and secondary components are calculated as 1.379 ± 0.109M_{⊙} and 1.513 ± 0.181M_{⊙}, while the radii are found to be 1.806 ± 0.084R_{⊙} and 2.611 ± 0.059R_{⊙}. In addition, we obtain a considerable light contribution (≍0.54%) of a third body. We compute a possible mass for the third body as 0.778 ± 0.002M_{⊙}. We find that the primary component exhibits γ Dor type pulsations with 137 frequencies.
 Publication:

Revista Mexicana de Astronomia y Astrofisica
 Pub Date:
 October 2020
 DOI:
 10.22201/ia.01851101p.2020.56.02.01
 Bibcode:
 2020RMxAA..56..179K
 Keywords:

 techniques: photometric;
 methods: data analysis;
 stars: binaries: eclipsing;
 stars: individual: γ Dor;
 KIC 8043961