@article{ac2f7bbd52214a55b4e716f0bf6b473e,
title = "TOI-2005b: An Eccentric Warm Jupiter in Spin-orbit Alignment",
abstract = "We report the discovery and characterization of TOI-2005 b, a warm Jupiter on an eccentric (e ∼ 0.59), 17.3 days orbit around a Vmag = 9.867 rapidly rotating F-star. The object was detected as a candidate by Transiting Exoplanet Survey Satellite and the planetary nature of TOI-2005 b was then confirmed via a series of ground-based photometric, spectroscopic, and diffraction-limited imaging observations. The planet was found to reside in a low sky-projected stellar obliquity orbit (λ = 4 . 8 − 2.5 + 2.3 degrees) via a transit spectroscopic observation using the Magellan Magellan Inamori Kyocera Echelle spectrograph. TOI-2005 b is one of a few planets known to have a low-obliquity high-eccentricity orbit, which may be the result of high-eccentricity coplanar migration. The planet has a periastron equilibrium temperature of ∼2100 K, similar to some highly irradiated hot Jupiters where atomic metal species have been detected in transmission spectroscopy, and varies by almost 1000 K during its orbit. Future observations of the atmosphere of TOI-2005b can inform us about its radiative timescales thanks to the rapid heating and cooling of the planet.",
author = "Allyson Bieryla and Jiayin Dong and George Zhou and Eastman, \{Jason D.\} and Mayorga, \{L. C.\} and Latham, \{David W.\} and Brad Carter and Huang, \{Chelsea X.\} and Quinn, \{Samuel N.\} and Collins, \{Karen A.\} and Lyu Abe and Yuri Beletsky and Rafael Brahm and Col{\'o}n, \{Knicole D.\} and Zahra Essack and Tristan Guillot and Thomas Henning and Hobson, \{Melissa J.\} and Keith Horne and Jenkins, \{Jon M.\} and Jones, \{Mat{\'i}as I.\} and Andr{\'e}s Jord{\'a}n and David Osip and Ricker, \{George R.\} and Rodriguez, \{Joseph E.\} and Jack Schulte and Schwarz, \{Richard P.\} and Sara Seager and Avi Shporer and Olga Suarez and Tan, \{Thiam Guan\} and Ting, \{Eric B.\} and Amaury Triaud and Andrew Vanderburg and Villase{\~n}or, \{Jesus Noel\} and Noah Vowell and Watkins, \{Cristilyn N.\} and Winn, \{Joshua N.\} and Carl Ziegler",
note = "We respectfully acknowledge the traditional custodians of the lands on which we conducted this research and throughout Australia. We recognize their continued cultural and spiritual connection to the land, waterways, cosmos, and community. We pay our deepest respects to all Elders, present and emerging people of the Giabal, Jarowair, and Kambuwal nations, upon whose lands this research was conducted. C.H. thanks the support of the ARC DECRA program DE200101840 and Future Fellowship program FT240100016. G.Z. thanks the support of the ARC DECRA program DE210101893 and Future Fellowship program FT230100517. Funding for the TESS mission is provided by NASA{\textquoteright}s Science Mission Directorate. We acknowledge the use of public TESS data from pipelines at the TESS Science Office and at the TESS Science Processing Operations Center. This research has made use of the Exoplanet Follow-up Observing Program website, which is operated by the California Institute of Technology, under contract with the National Aeronautics and Space Administration under the Exoplanet Exploration Program. Resources supporting this work were provided by the NASA High-End Computing (HEC) Program through the NASA Advanced Supercomputing (NAS) Division at Ames Research Center for the production of the SPOC data products. This paper includes data collected by the TESS mission that are publicly available from the Mikulski Archive for Space Telescopes (MAST). This work has made use of data from the European Space Agency (ESA) mission Gaia ( https://www.cosmos.esa.int/gaia ), processed by the Gaia Data Processing and Analysis Consortium (DPAC; https://www.cosmos.esa.int/web/gaia/dpac/consortium ). Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement. The Flatiron Institute is a division of the Simons foundation. This work makes use of observations from the LCOGT network. Part of the LCOGT telescope time was granted by NOIRLab through the Mid-Scale Innovations Program (MSIP). MSIP is funded by NSF. This work makes use of observations from the ASTEP telescope. ASTEP benefited from the support of the French and Italian polar agencies IPEV and PNRA in the framework of the Concordia station program and from OCA, INSU, Idex UCAJEDI (ANR- 15-IDEX-01), and ESA through the Science Faculty of the European Space Research and Technology Centre (ESTEC). This research also received funding from the European Research Council (ERC) under the European Union{\textquoteright}s Horizon 2020 research and innovation program (grant agreement No. 803193/BEBOP) and from the Science and Technology Facilities Council (STFC; grant No. ST/S00193X/1). A.J. acknowledges support from ANID{\textemdash}Millennium Science Initiative{\textemdash}ICN12\_009, AIM23-0001 and from FONDECYT project 1210718.",
year = "2025",
month = may,
day = "1",
doi = "10.3847/1538-3881/adc441",
language = "English (US)",
volume = "169",
journal = "Astronomical Journal",
issn = "0004-6256",
publisher = "American Astronomical Society",
number = "5",
}