TESS Spots a Hot Jupiter with an Inner Transiting Neptune
Artikel i vetenskaplig tidskrift, 2020

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 RJ) 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 MJ. For the inner Neptune, the data provide only an upper limit on the mass of 0.17 MJ (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.

Hot Jupiters

Extrasolar gas giants


Extrasolar rocky planets

Exoplanet astronomy


Chelsea X. Huang

Massachusetts Institute of Technology (MIT)

S. N. Quinn

A. Vanderburg

The University of Texas at Austin

Juliette Becker

California Institute of Technology (Caltech)

Joseph E. Rodriguez

Francisco J. Pozuelos

Universite de Liège

Davide Gandolfi

Universita degli Studi di Torino

G. Zhou

Andrew W. Mann

The University of North Carolina at Chapel Hill

Karen A. Collins

Ian Crossfield

Massachusetts Institute of Technology (MIT)

Khalid Barkaoui

Kevin I. Collins

Malcolm Fridlund

Chalmers, Rymd-, geo- och miljövetenskap, Astronomi och plasmafysik

Michaël Gillon

Erica J. Gonzales

Maximilian N. Günther

Massachusetts Institute of Technology (MIT)

Todd J. Henry

Steve B. Howell

Hodari-Sadiki James

Wei-Chun Jao

Emmanuel Jehin

Eric L. N. Jensen

Stephen R. Kane

Jack J. Lissauer

Elisabeth Matthews

Massachusetts Institute of Technology (MIT)

Rachel A. Matson

Leonardo A. Paredes

Joshua E. Schlieder

K.G. Stassun

Avi Shporer

Massachusetts Institute of Technology (MIT)

Lizhou Sha

Massachusetts Institute of Technology (MIT)

Thiam-Guan Tan

Iskra Georgieva

Chalmers, Rymd-, geo- och miljövetenskap, Astronomi och plasmafysik

Savita Mathur

Enric Palle

Carina Persson

Chalmers, Rymd-, geo- och miljövetenskap, Astronomi och plasmafysik

Vincent Van Eylen

George Ricker

Massachusetts Institute of Technology (MIT)

R. Vanderspek

Massachusetts Institute of Technology (MIT)

D.W. Latham

Joshua N. Winn

S. Seager

Massachusetts Institute of Technology (MIT)

Jon M. Jenkins

Christopher J. Burke

Robert Goeke

Massachusetts Institute of Technology (MIT)

Stephen Rinehart

Mark E. Rose

E. B. Ting

Guillermo Torres

Ian Wong

Astrophysical Journal Letters

2041-8205 (ISSN) 2041-8213 (eISSN)

Vol. 892 1 L7

Exoplaneter från rymden - CHEOPS och PLATO, ESA's nästa två missioner

Rymdstyrelsen (174/18), 2017-01-01 -- 2022-12-31.


Astronomi, astrofysik och kosmologi


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