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

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.

Citation

Mann, C. R., Dalba, P. A., Lafrenière, D., Fulton, B. J., Hébrard, G., Boisse, I., Dalal, S., Deleuil, M., Delfosse, X., Demangeon, O., Forveille, T., Heidari, N., Kiefer, F., Martioli, E., Moutou, C., Endl, M., Cochran, W. D., MacQueen, P., Marchis, F., Dragomir, D., …Ting, E. B. (2023). Giant Outer Transiting Exoplanet Mass (GOT ’EM) Survey. III. Recovery and Confirmation of a Temperate, Mildly Eccentric, Single-transit Jupiter Orbiting TOI-2010. Astronomical Journal, 166(6), Article 239. https://doi.org/10.3847/1538-3881/ad00bc

• Journal Article Type: Article
• Acceptance Date: Sep 28, 2023
• Online Publication Date: Nov 13, 2023
• Publication Date: Dec 1, 2023
• Deposit Date: Nov 20, 2023
• Publicly Available Date: Nov 20, 2023
• Journal: The Astronomical Journal
• Print ISSN: 0004-6256
• Electronic ISSN: 1538-3881
• Publisher: American Astronomical Society
• Peer Reviewed: Peer Reviewed
• Volume: 166
• Issue: 6
• Article Number: 239
• DOI: https://doi.org/10.3847/1538-3881/ad00bc
• Keywords: Exoplanet dynamics, Exoplanet detection methods, Exoplanet systems, Exoplanet astronomy
• Public URL: https://keele-repository.worktribe.com/output/637346