TESS Hunt for Young and Maturing Exoplanets (THYME). II. A 17Myr Old Transiting Hot Jupiter in the Sco-Cen Association
Article
Article Title | TESS Hunt for Young and Maturing Exoplanets (THYME). II. A 17Myr Old Transiting Hot Jupiter in the Sco-Cen Association |
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ERA Journal ID | 1048 |
Article Category | Article |
Authors | Rizzuto, Aaron C. (Author), Newton, Elisabeth R. (Author), Mann, Andrew W. (Author), Tofflemire, Benjamin M. (Author), Vanderburg, Andrew (Author), Kraus, Adam L. (Author), Wood, Mackenna L. (Author), Quinn, Samuel N. (Author), Zhou, George (Author), Thao, Pa Chia (Author), Law, Nicholas M. (Author), Ziegler, Carl (Author) and Briceno, Cesar (Author) |
Journal Title | The Astronomical Journal |
Journal Citation | 160 (1), pp. 1-14 |
Article Number | 33 |
Number of Pages | 14 |
Year | 2020 |
Publisher | IOP Publishing |
Place of Publication | United States |
ISSN | 0004-6256 |
1538-3881 | |
Digital Object Identifier (DOI) | https://doi.org/10.3847/1538-3881/ab94b7 |
Web Address (URL) | https://iopscience.iop.org/article/10.3847/1538-3881/ab94b7 |
Abstract | We present the discovery of a transiting hot Jupiter orbiting HIP 67522 (T eff ∼ 5650 K; M ∗ ∼ 1.2M o˙) in the 10-20 Myr old Sco-Cen OB association. We identified the transits in the TESS data using our custom notch filter planet search pipeline and characterize the system with additional photometry from Spitzer; spectroscopy from SOAR/Goodman, SALT/HRS, LCOGT/NRES, and SMARTS/CHIRON; and speckle imaging from SOAR/HRCam. We model the photometry as a periodic Gaussian process with transits to account for stellar variability and find an orbital period of 6.9596+0.0000150-000016days and radius of10.02-0.53+0.54R⊕. We also identify a single transit of an additional candidate planet with radius 8.01-0.710.75R ⊕ that has an orbital period of ⪆23 days. The validated planet HIP 67522b is currently the youngest transiting hot Jupiter discovered and is an ideal candidate for transmission spectroscopy and radial velocity follow-up studies, while also demonstrating that some young giant planets either form in situ at small orbital radii or else migrate promptly from formation sites farther out in the disk. |
Keywords | Astrophysics - Earth and Planetary; Astrophysics; Astrophysics - Solar and Stellar Astrophysics |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
Public Notes | File reproduced in accordance with the copyright policy of the publisher/author. |
Byline Affiliations | University of Texas at Austin, United States |
Dartmouth College, United States | |
University of North Carolina, United States | |
Center for Astrophysics Harvard and Smithsonian, United States | |
University of Toronto, Canada | |
Cerro Tololo Inter-American Observatory, Chile | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q6x5x/tess-hunt-for-young-and-maturing-exoplanets-thyme-ii-a-17myr-old-transiting-hot-jupiter-in-the-sco-cen-association
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