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arXiv · 2311.10232

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

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

Large-scale exoplanet surveys like the 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 observing baseline. These single-transit planets often remain unverified due to their unknown orbital period 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 (NEOSSat), 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 ($M_P = 1.29 \ M_{\rm Jup}$, $R_P = 1.05 \ R_{\rm Jup}$) 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 K to 450 K from apoastron 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.

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Christopher R. Mann, Paul A. Dalba, David Lafrenière, Benjamin J. Fulton, Guillaume Hébrard, Isabelle Boisse, Shweta Dalal, Magali Deleuil, Xavier Delfosse, Olivier Demangeon, Thierry Forveille, Neda Heidari, Flavien Kiefer, Eder Martioli, Claire Moutou, Michael Endl, William D. Cochran, Phillip MacQueen, Franck Marchis, Diana Dragomir, Arvind F. Gupta, Dax L. Feliz, Belinda A. Nicholson, Carl Ziegler, Steven Villanueva Jr., Jason Rowe, Geert Jan Talens, Daniel Thorngren, Daryll LaCourse, Tom Jacobs, Andrew W. Howard, Allyson Bieryla, David W. Latham, Markus Rabus, Tara Fetherolf, Coel Hellier, Steve B. Howell, Peter Plavchan, Michael Reefe, Deven Combs, Michael Bowen, Justin Wittrock, George R. Ricker, S. Seager, Joshua N. Winn, Jon M. Jenkins, Thomas Barclay, David Watanabe, Karen A. Collins, Jason D. Eastman, Eric B. Ting. 2023-11-16. Giant Outer Transiting Exoplanet Mass (GOT 'EM) Survey: III. Recovery and Confirmation of a Temperate, Mildly Eccentric, Single-Transit Jupiter Orbiting TOI-2010. https://doi.org/10.3847/1538-3881%2Fad00bc

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