Confirmation of a Sub-Saturn-size transiting exoplanet orbiting a G dwarf: TOI-1194 b and a very low mass companion star: TOI-1251 B from TESS
| Autor: | Wang, Jia-Qi, Jiang, Xiao-Jun, Zheng, Jie, Kellermann, Hanna, Riffeser, Arno, Wang, Liang, Collins, Karen A., Bieryla, Allyson, Buchhave, Lars A., Howell, Steve B., Furlan, Elise, Girardin, Eric, Gregorio, Joao, Jensen, Eric, Murgas, Felipe, Yilmaz, Mesut, Quinn, Sam, Gao, Xing, Zhou, Ruo-Yu, Grupp, Frank, Wang, Hui-Juan |
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| Rok vydání: | 2023 |
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| Druh dokumentu: | Working Paper |
| Popis: | We report the confirmation of a sub-Saturn-size exoplanet, TOI-1194 b with a mass about $0.456_{-0.051}^{+0.055}$ $M_{J}$, and a very low mass companion star with a mass of about $96.5\pm1.5$ $M_J$, TOI-1251 B. Exoplanet candidates provided by the Transiting Exoplanet Survey Satellite (TESS) are suitable for further follow-up observations by ground-based telescopes with small and medium apertures. The analysis is performed based on data from several telescopes worldwide, including telescopes in the Sino-German multiband photometric campaign, which aimed at confirming TESS Objects of Interest (TOIs) using ground-based small-aperture and medium-aperture telescopes, especially for long-period targets. TOI-1194 b is confirmed based on the consistent periodic transits depths from the multiband photometric data. We measure an orbital period of $2.310644\pm0.000001$ d, and radius is $0.767_{-0.041}^{+0.045}$ $R_J$, and amplitude of RV curve is $69.4_{-7.3}^{+7.9}$ m/s. TOI-1251 B is confirmed based on the multiband photometric and high-resolution spectroscopic data, whose orbiting period is $5.963054_{-0.000001}^{+0.000002}$ d, the radius is $0.947_{-0.033}^{+0.035}$ $R_J$, and amplitude of RV curve is $9849_{-40}^{+42}$ m/s. Comment: 28 pages, 8 figures, Accepted by RAA on Oct. 18th, 2023 |
| Databáze: | arXiv |
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