TOI 122b and TOI 237b, two small warm planets orbiting inactive M dwarfs, found by \textit{TESS}
| Autor: | Waalkes, William C., Berta-Thompson, Zachory K., Collins, Karen A., Feinstein, Adina D., Tofflemire, Benjamin M., Rojas-Ayala, Bárbara, Silverstein, Michele L., Newton, Elisabeth, Ricker, George R., Vanderspek, Roland, Latham, David W., Seager, S., Winn, Joshua N., Jenkins, Jon M., Christiansen, Jessie, Goeke, Robert F., Levine, Alan M., Osborn, H. P., Rinehart, S. A., Rose, Mark E., Ting, Eric B., Twicken, Joseph D., Barkaoui, Khalid, Bean, Jacob L., Briceño, César, Ciardi, David R., Collins, Kevin I., Conti, Dennis, Gan, Tianjun, Gillon, Michaël, Isopi, Giovanni, Jehin, Emmanuël, Jensen, Eric L. N., Kielkopf, John F., Law, Nicholas, Mallia, Franco, Mann, Andrew W., Montet, Benjamin T., Pozuelos, Francisco J., Relles, Howard, Libby-Roberts, Jessica E., Ziegler, Carl |
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| Rok vydání: | 2020 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.3847/1538-3881/abc3b9 |
| Popis: | We report the discovery and validation of TOI 122b and TOI 237b, two warm planets transiting inactive M dwarfs observed by \textit{TESS}. Our analysis shows TOI 122b has a radius of 2.72$\pm$0.18 R$_\rm{e}$ and receives 8.8$\pm$1.0$\times$ Earth's bolometric insolation, and TOI 237b has a radius of 1.44$\pm$0.12 R$_\rm{e}$ and receives 3.7$\pm$0.5$\times$ Earth insolation, straddling the 6.7$\times$ Earth insolation that Mercury receives from the sun. This makes these two of the cooler planets yet discovered by \textit{TESS}, even on their 5.08-day and 5.43-day orbits. Together, they span the small-planet radius valley, providing useful laboratories for exploring volatile evolution around M dwarfs. Their relatively nearby distances (62.23$\pm$0.21 pc and 38.11$\pm$0.23 pc, respectively) make them potentially feasible targets for future radial velocity follow-up and atmospheric characterization, although such observations may require substantial investments of time on large telescopes. Comment: 21 pages, 9 figures, 4 tables, accepted to AJ |
| Databáze: | arXiv |
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