TESS Spots a Hot Jupiter with an Inner Transiting Neptune

Huang, Chelsea X. ORCID: https://orcid.org/0000-0003-0918-7484 and Quinn, Samuel N. and Vanderburg, Andrew and Becker, Juliette and Rodriguez, Joseph E. and Pozuelos, Francisco J. and Gandolfi, Davide and Zhou, George ORCID: https://orcid.org/0000-0002-4891-3517 and Mann, Andrew W. and Collins, Karen A. and Crossfield, Ian and Barkaoui, Khalid and Collins, Kevin I. and Fridlund, Malcolm and Gillon, Michael and Gonzales, Erica J. and Gunther, Maximilian N. and Henry, Todd J. and Howell, Steve B. and James, Hodari-Sadiki and Jao, Wei-Chun and Jehin, Emmanuel and Jensen, Eric L. N. and Kane, Stephen R. and Lissauer, Jack J. and Matthews, Elisabeth and Matson, Rachel A. and Paredes, Leonardo A. and Schlieder, Joshua E. and Stassun, Keivan G. and Shporer, Avi and Sha, Lizhou and Tan, Thiam-Guan and Georgieva, Iskra and Mathur, Savita and Palle, Enric and Persson, Carina M. and Van Eylen, Vincent and Ricker, George R. and Vanderspek, Roland K. and Latham, David W. and Winn, Joshua N. and Seager, S. and Jenkins, Jon M. and Burke, Christopher J. and Goeke, Robert F. and Rinehart, Stephen and Rose, Mark E. and Ting, Eric B. and Torres, Guillermo and Wong, Ian (2020) TESS Spots a Hot Jupiter with an Inner Transiting Neptune. The Astrophysical Journal Letters, 892 (1):L7. pp. 1-9. ISSN 2041-8205

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Hot Jupiters are rarely accompanied by other planets within a factor of a few in orbital distance. Previously, only two such systems have been found. Here, we report the discovery of a third system using data from the Transiting Exoplanet Survey Satellite (TESS). The host star, TOI-1130, is an eleventh magnitude K-dwarf in Gaia G-band. It has two transiting planets: A Neptune-sized planet (3.65 ± 0.10) with a 4.1 days period, and a hot Jupiter with an 8.4 days period. Precise radial-velocity observations show that the mass of the hot Jupiter is For the inner Neptune, the data provide only an upper limit on the mass of 0.17 (3σ). Nevertheless, we are confident that the inner planet is real, based on follow-up ground-based photometry and adaptive-optics imaging that rule out other plausible sources of the TESS transit signal. The unusual planetary architecture of and the brightness of the host star make TOI-1130 a good test case for planet formation theories, and an attractive target for future spectroscopic observations.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Faculty/School / Institute/Centre: No Faculty
Faculty/School / Institute/Centre: No Faculty
Date Deposited: 27 Jan 2022 03:48
Last Modified: 06 May 2022 02:45
Uncontrolled Keywords: 486; 509; 511; 498; 753; Astrophysics - Earth and Planetary; Astrophysics; Astrophysics - Solar and Stellar Astrophysics
Fields of Research (2008): 02 Physical Sciences > 0201 Astronomical and Space Sciences > 020110 Stellar Astronomy and Planetary Systems
Fields of Research (2020): 51 PHYSICAL SCIENCES > 5101 Astronomical sciences > 510109 Stellar astronomy and planetary systems
Socio-Economic Objectives (2008): E Expanding Knowledge > 97 Expanding Knowledge > 970102 Expanding Knowledge in the Physical Sciences
Socio-Economic Objectives (2020): 28 EXPANDING KNOWLEDGE > 2801 Expanding knowledge > 280120 Expanding knowledge in the physical sciences
Identification Number or DOI: https://doi.org/10.3847/2041-8213/ab7302
URI: http://eprints.usq.edu.au/id/eprint/44994

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