A Warm Jupiter Transiting an M Dwarf: A TESS Single-transit Event Confirmed with the Habitable-zone Planet Finder,The Astronomical Journal

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A Warm Jupiter Transiting an M Dwarf: A TESS Single-transit Event Confirmed with the Habitable-zone Planet Finder
The Astronomical Journal ( IF 5.3 ) Pub Date : 2020-09-02 , DOI: 10.3847/1538-3881/abac67
Caleb I. Caas _{1,

2} , Gudmundur Stefansson _{1,

2,

3} , Shubham Kanodia _{1,

2} , Suvrath Mahadevan _{1,

2} , William D. Cochran ₄ , Michael Endl ₄ , Paul Robertson ₅ , Chad F. Bender ₆ , Joe P. Ninan _{1,

2} , Corey Beard ₅ , Jack Lubin ₅ , Arvind F. Gupta _{1,

2} , Mark E. Everett ₇ , Andrew Monson _{1,

2} , Robert F. Wilson ₈ , Hannah M. Lewis ₈ , Mary Brewer ₈ , Steven R. Majewski ₈ , Leslie Hebb ₉ , Rebekah I. Dawson _{1,

2} , Scott A. Diddams _{10,

11} , Eric B. Ford _{1,

2,

12} , Connor Fredrick _{10,

11} , Samuel Halverson ₁₃ , Fred Hearty _{1,

2} , Andrea S. J. Lin _{1,

2} , Andrew J. Metcalf _{10,

11,

14} , Jayadev Rajagopal ₇ , Lawrence W. Ramsey _{1,

2} , Arpita Roy ₁₅ , Christian Schwab ₁₆ , Ryan C. Terrien ₁₇ , Jason T. Wright _{1,

2}

Affiliation

Department of Astronomy and Astrophysics, The Pennsylvania State University, 525 Davey Laboratory, University Park, PA 16802, USA
Center for Exoplanets and Habitable Worlds, The Pennsylvania State University, 525 Davey Laboratory, University Park, PA 16802, USA
Department of Astrophysical Sciences, Princeton University, 4 Ivy Lane, Princeton, NJ 08540, USA
McDonald Observatory and Center for Planetary Systems Habitability, The University of Texas at Austin, Austin, TX 78730, USA
Department of Physics and Astronomy, The University of California, Irvine, Irvine, CA 92697, USA
Steward Observatory, The University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721, USA
NSF’s National Optical-Infrared Astronomy Research Laboratory, Tucson, AZ 85719, USA
Department of Astronomy, University of Virginia, Charlottesville, VA 22904, USA
Department of Physics, Hobart and William Smith Colleges, 300 Pulteney Street, Geneva, NY 14456, USA
Time and Frequency Division, National Institute of Standards and Technology, 325 Broadway, Boulder, CO 80305, USA
Department of Physics, University of Colorado, 2000 Colorado Avenue, Boulder, CO 80309, USA
Institute for CyberScience, The Pennsylvania State University, University Park, PA 16802, USA
Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109, USA
Space Vehicles Directorate, Air Force Research Laboratory, 3550 Aberdeen Avenue SE, Kirtland AFB, NM 87117, USA
Department of Astronomy, California Institute of Technology, Pasadena, CA 91125, USA
Department of Physics and Astronomy, Macquarie University, Balaclava Road, North Ryde, NSW 2109, Australia
Department of Physics and Astronomy, Carleton College, One North College Street, Northfield, MN 55057, USA

We confirm the planetary nature of a warm Jupiter transiting the early M dwarf TOI-1899, using a combination of available TESS photometry; high-precision, near-infrared spectroscopy with the Habitable-zone Planet Finder; and speckle and adaptive optics imaging. The data reveal a transiting companion on an $\sim29$-day orbit with a mass and radius of $0.66\pm0.07\ \mathrm{M_{J}}$ and $1.15_{-0.05}^{+0.04}\ \mathrm{R_{J}}$, respectively. The star TOI-1899 is the lowest-mass star known to host a transiting warm Jupiter, and we discuss the follow-up opportunities afforded by a warm ($\mathrm{T_{eq}}\sim362$ K) gas giant orbiting an M0 star. Our observations reveal that TOI-1899.01 is a puffy warm Jupiter, and we suggest additional transit observations to both refine the orbit and constrain the true dilution observed in TESS.

中文翻译：

温暖的木星经过 M 矮星：由宜居带行星探测器确认的 TESS 单过境事件

我们使用可用的 TESS 光度测量法的组合，确认了经过早期 M 矮星 TOI-1899 的温暖木星的行星性质；使用宜居带行星探测器的高精度近红外光谱仪；以及散斑和自适应光学成像。数据揭示了 $\sim29$-day 轨道上的一个过境伴星，质量和半径为 $0.66\pm0.07\ \mathrm{M_{J}}$ 和 $1.15_{-0.05}^{+0.04}\ \分别为 mathrm{R_{J}}$。恒星 TOI-1899 是已知拥有过境温暖木星的质量最低的恒星，我们讨论了由温暖的 ($\mathrm{T_{eq}}\sim362$ K) 气体巨行星提供的后续机会M0星。我们的观测表明 TOI-1899.01 是一颗蓬松的温暖木星，我们建议进行额外的凌日观测，以改进轨道并限制在 TESS 中观察到的真实稀释。

更新日期：2020-09-02

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