TESS Spots a Hot Jupiter with an Inner Transiting Neptune
Name
Huang_2020_ApJL_892_L7.pdf
Size
1.79 MB
Format
Unknown
Checksum (MD5)
3deeaa891b806f9657446393b10537ce
Author(s)
Huang, Chelsea X.
Crossfield, Ian Jm
Günther, Maximilian N.
Matthews, Elisabeth C
Shporer, Abraham-Avi
Sha, Lizhou
Ricker, George R
Vanderspek, Roland K
Seager, Sara
Burke, Christopher J.
Date Issued
2020
Journal
Astrophysical Journal Letters
Publisher
American Astronomical Society
Version
Final published version
Abstract
© 2020. The American Astronomical Society. All rights reserved. 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.
MIT Department
Massachusetts Institute of Technology. Department of Physics
MIT Kavli Institute for Astrophysics and Space Research
Massachusetts Institute of Technology. Department of Aeronautics and Astronautics
Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.3847/2041-8213/ab7302
