TESS Spots a Hot Jupiter with an Inner Transiting Neptune

Huang, Chelsea X. and Quinn, Samuel N. and Vanderburg, Andrew and Becker, Juliette and Rodriguez, Joseph E. and Pozuelos, Francisco J. and Gandolfi, Davide and Zhou, George and Mann, Andrew W. and Collins, Karen A. and Crossfield, Ian and Barkaoui, Khalid and Collins, Kevin I. and Fridlund, Malcolm and Gillon, Michaël and Gonzales, Erica J. and Günther, Maximilian N. and Henry, Todd J. and Howell, Steve B. and James, Hodari-Sadiki and Jao, Wei-Chun and Jehin, Emmanuël 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 Eylen, Vincent Van 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, 892 (1). L7. ISSN 2041-8213

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Abstract

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 ${R}_{\oplus }$) with a 4.1 days period, and a hot Jupiter (${1.50}_{-0.22}^{+0.27}$ ${R}_{{\rm{J}}}$) with an 8.4 days period. Precise radial-velocity observations show that the mass of the hot Jupiter is ${0.974}_{-0.044}^{+0.043}$ ${M}_{{\rm{J}}}$. For the inner Neptune, the data provide only an upper limit on the mass of 0.17 ${M}_{{\rm{J}}}$ (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.

Item Type: Article
Subjects: Article Archives > Physics and Astronomy
Depositing User: Unnamed user with email support@articlearchives.org
Date Deposited: 26 May 2023 05:43
Last Modified: 18 Jun 2024 06:55
URI: http://archive.paparesearch.co.in/id/eprint/1432

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