HD 183579b: a warm sub-Neptune transiting a solar twin detected by TESS,Monthly Notices of the Royal Astronomical Society

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HD 183579b: a warm sub-Neptune transiting a solar twin detected by TESS
Monthly Notices of the Royal Astronomical Society ( IF 4.8 ) Pub Date : 2021-07-30 , DOI: 10.1093/mnras/stab2224
Tianjun Gan ₁ , Megan Bedell ₂ , Sharon Xuesong Wang ₁ , Daniel Foreman-Mackey ₂ , Jorge Meléndez ₃ , Shude Mao _{1,

4} , Keivan G Stassun _{5,

6} , Steve B Howell ₇ , Carl Ziegler ₈ , Robert A Wittenmyer ₉ , Coel Hellier ₁₀ , Karen A Collins ₁₁ , Avi Shporer ₁₂ , George R Ricker ₁₂ , Roland Vanderspek ₁₂ , David W Latham ₁₁ , Sara Seager _{12,

13,

14} , Joshua N Winn ₁₅ , Jon M Jenkins ₇ , Brett C Addison ₉ , Sarah Ballard ₁₆ , Thomas Barclay _{17,

18} , Jacob L Bean ₁₉ , Brendan P Bowler ₂₀ , César Briceño ₂₁ , Ian J M Crossfield ₂₂ , Jason Dittman _{11,

23} , Jonathan Horner ₉ , Eric L N Jensen ₂₄ , Stephen R Kane ₂₅ , John Kielkopf ₂₆ , Laura Kreidberg _{11,

23} , Nicholas Law ₂₇ , Andrew W Mann ₂₇ , Matthew W Mengel ₉ , Edward H Morgan ₁₂ , Jack Okumura ₉ , Hugh P Osborn _{12,

28} , Martin Paegert ₁₁ , Peter Plavchan ₂₉ , Richard P Schwarz ₂₉ , Bernie Shiao ₃₀ , Jeffrey C Smith _{7,

31} , Lorenzo Spina ₃₂ , C G Tinney ₃₃ , Guillermo Torres ₁₁ , Joseph D Twicken _{7,

31} , Michael Vezie ₁₂ , Gavin Wang _{34,

35} , Duncan J Wright ₉ , Hui Zhang ₃₆

Affiliation

Department of Astronomy and Tsinghua Centre for Astrophysics, Tsinghua University, Beijing 100084, China
Center for Computational Astrophysics, Flatiron Institute, 162 Fifth Ave, New York, NY 10010, USA
Departamento de Astronomia, IAG, Universidade de São Paulo, Rua do Matão 1226, São Paulo, 05509-900, Brazil
National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, China
Department of Physics and Astronomy, Vanderbilt University, 6301 Stevenson Center Ln., Nashville, TN 37235, USA
Department of Physics, Fisk University, 1000 17th Avenue North, Nashville, TN 37208, USA
NASA Ames Research Center, Moffett Field, CA 94035, USA
Department of Physics, Engineering and Astronomy, Stephen F. Austin State University, 1936 North St, Nacogdoches, TX 75962, USA
University of Southern Queensland, Centre for Astrophysics, West Street, Toowoomba, QLD 4350 Australia
Astrophysics Group, Keele University, Staffordshire, ST5 5BG, UK
Center for Astrophysics ∣ Harvard & Smithsonian, 60 Garden Street, Cambridge, MA 02138, USA
Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
Department of Aeronautics and Astronautics, MIT, 77 Massachusetts Avenue, Cambridge, MA 02139, USA
Department of Astrophysical Sciences, Princeton University, 4 Ivy Lane, Princeton, NJ 08544, USA
Department of Astronomy, University of Florida, 211 Bryant Space Science Center, Gainesville, FL, 32611, USA
NASA Goddard Space Flight Center, 8800 Greenbelt Road, Greenbelt, MD 20771, USA
University of Maryland, Baltimore County, 1000 Hilltop Circle, Baltimore, MD 21250, USA
Department of Astronomy and Astrophysics, University of Chicago, 5640 S. Ellis Ave, Chicago, IL 60637, USA
Department of Astronomy, The University of Texas at Austin, TX 78712, USA
Cerro Tololo Inter-American Observatory, Casilla 603, La Serena, Chile
Department of Physics & Astronomy, University of Kansas, 1082 Malott,1251 Wescoe Hall Dr., Lawrence, KS 66045, USA
Max Planck Institute for Astronomy, Konigstuhl 17, 69117 Heidelberg, Germany
Department of Physics & Astronomy, Swarthmore College, Swarthmore PA 19081, USA
Department of Earth and Planetary Sciences, University of California, Riverside, CA 92521, USA
Department of Physics and Astronomy, University of Louisville, Louisville, KY 40292, USA
Department of Physics and Astronomy, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3255, USA
NCCR/PlanetS, Centre for Space & Habitability, University of Bern, Bern, Switzerland
George Mason University, 4400 University Drive MS 3F3, Fairfax, VA 22030, USA
Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA
SETI Institute, 189 Bernardo Ave, Suite 200, Mountain View, CA 94043, USA
INAF - Osservatorio Astronomico di Padova, vicolo dell’Osservatorio 5, 35122, Padova, Italy
Exoplanetary Science at UNSW, School of Physics, UNSW Sydney, NSW 2052, Australia
Tsinghua International School, Beijing 100084, China
Stanford Online High School, 415 Broadway Academy Hall, Floor 2, 8853, Redwood City, CA 94063, USA
School of Astronomy and Space Science, Key Laboratory of Modern Astronomy and Astrophysics in Ministry of Education, Nanjing University, Nanjing 210046, Jiangsu, China

We report the discovery and characterization of a transiting warm sub-Neptune planet around the nearby bright (V = 8.75 mag, K = 7.15 mag) solar twin HD 183579, delivered by the Transiting Exoplanet Survey Satellite (TESS). The host star is located 56.8 ± 0.1 pc away with a radius of R* = 0.97 ± 0.02 R⊙ and a mass of M* = 1.03 ± 0.05 M⊙. We confirm the planetary nature by combining space and ground-based photometry, spectroscopy, and imaging. We find that HD 183579b (TOI-1055b) has a radius of Rp = 3.53 ± 0.13 R⊕ on a 17.47 d orbit with a mass of Mp = 11.2 ± 5.4 M⊕ (3σ mass upper limit of 27.4 M⊕). HD 183579b is the fifth brightest known sub-Neptune planet system in the sky, making it an excellent target for future studies of the interior structure and atmospheric properties. By performing a line-by-line differential analysis using the high-resolution and signal-to-noise ratio HARPS spectra, we find that HD 183579 joins the typical solar twin sample, without a statistically significant refractory element depletion.

中文翻译：

HD 183579b：TESS 检测到一个温暖的亚海王星穿过太阳双胞胎

我们报告了由凌日系外行星测量卫星 (TESS) 提供的围绕附近明亮（V = 8.75 mag，K = 7.15 mag）太阳双胞胎 HD 183579 的凌日暖亚海王星行星的发现和表征。主星位于 56.8 ± 0.1 pc 外，半径 R* = 0.97 ± 0.02 R⊙，质量 M* = 1.03 ± 0.05 M⊙。我们通过结合空间和地面测光、光谱和成像来确认行星的性质。我们发现 HD 183579b (TOI-1055b) 在 17.47 d 轨道上的半径为 Rp = 3.53 ± 0.13 R⊕，质量为 Mp = 11.2 ± 5.4 M⊕（3σ 质量上限为 27.4 M⊕）。HD 183579b 是已知天空中第五亮的亚海王星行星系统，使其成为未来研究内部结构和大气特性的绝佳目标。

更新日期：2021-07-30

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