Giant Outer Transiting Exoplanet Mass (GOT 'EM) Survey. III. Recovery and Confirmation of a Temperate, Mildly Eccentric, Single-transit Jupiter Orbiting TOI-2010

December 2023 • 2023AJ....166..239M

Authors • Mann, Christopher R. • Dalba, Paul A. • Lafrenière, David • Fulton, Benjamin J. • Hébrard, Guillaume • Boisse, Isabelle • Dalal, Shweta • Deleuil, Magali • Delfosse, Xavier • Demangeon, Olivier • Forveille, Thierry • Heidari, Neda • Kiefer, Flavien • Martioli, Eder • Moutou, Claire • Endl, Michael • Cochran, William D. • MacQueen, Phillip • Marchis, Franck • Dragomir, Diana • Gupta, Arvind F. • Feliz, Dax L. • Nicholson, Belinda A. • Ziegler, Carl • Villanueva, Steven • Rowe, Jason • Talens, Geert Jan • Thorngren, Daniel • LaCourse, Daryll • Jacobs, Tom • Howard, Andrew W. • Bieryla, Allyson • Latham, David W. • Rabus, Markus • Fetherolf, Tara • Hellier, Coel • Howell, Steve B. • Plavchan, Peter • Reefe, Michael • Combs, Deven • Bowen, Michael • Wittrock, Justin • Ricker, George R. • Seager, S. • Winn, Joshua N. • Jenkins, Jon M. • Barclay, Thomas • Watanabe, David • Collins, Karen A. • Eastman, Jason D. • Ting, Eric B.

Abstract • Large-scale exoplanet surveys like the Transiting Exoplanet Survey Satellite (TESS) mission are powerful tools for discovering large numbers of exoplanet candidates. Single-transit events are commonplace within the resulting candidate list due to the unavoidable limitation of the observing baseline. These single-transit planets often remain unverified due to their unknown orbital periods and consequent difficulty in scheduling follow-up observations. In some cases, radial velocity (RV) follow up can constrain the period enough to enable a future targeted transit detection. We present the confirmation of one such planet: TOI-2010 b. Nearly three years of RV coverage determined the period to a level where a broad window search could be undertaken with the Near-Earth Object Surveillance Satellite, detecting an additional transit. An additional detection in a much later TESS sector solidified our final parameter estimation. We find TOI-2010 b to be a Jovian planet (M _P = 1.29 M _Jup, R _P = 1.05 R _Jup) on a mildly eccentric orbit (e = 0.21) with a period of P = 141.83403 days. Assuming a simple model with no albedo and perfect heat redistribution, the equilibrium temperature ranges from about 360 to 450 K from apastron to periastron. Its wide orbit and bright host star (V = 9.85) make TOI-2010 b a valuable test bed for future low-insolation atmospheric analysis.

Links

• SIMBAD http://simbad.u-strasbg.fr/simbo.pl?bibcode=2023AJ....166..239M
• PDF https://iopscience.iop.org/article/10.3847/1538-3881/ad00bc/pdf
• PREPRINT http://arxiv.org/abs/2311.10232
• DATA https://archive.gemini.edu/searchform/publication=2023AJ....166..239M
• ELECTR https://doi.org/10.3847%2F1538-3881%2Fad00bc