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TOI-1670 b and c: A...
TOI-1670 b and c: An Inner Sub-Neptune with an Outer Warm Jupiter Unlikely to Have Originated from High-eccentricity Migration
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- Tran, Quang H. (author)
- The University of Texas at Austin, USA
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- Bowler, Brendan P. (author)
- The University of Texas at Austin, USA
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- Endl, Michael (author)
- The University of Texas at Austin, USA,The University of Texas at Austin, USA
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- Cochran, William D. (author)
- The University of Texas at Austin, USA,The University of Texas at Austin, USA
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- MacQueen, Phillip J. (author)
- The University of Texas at Austin, USA
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- Gandolfi, Davide (author)
- Universita degli Studi di Torino,University of Turin
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- Persson, Carina, 1964 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Fridlund, Malcolm, 1952 (author)
- Universiteit Leiden (UL),Leiden University (UL),Chalmers tekniska högskola,Chalmers University of Technology
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- Palle, Enric (author)
- Instituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna
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- Nowak, Grzegorz (author)
- Universidad de la Laguna,University of La Laguna,Instituto de Astrofísica de Canarias
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- Deeg, Hans J. (author)
- Instituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna
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- Luque, Rafael (author)
- Instituto de Astrofisica de Andalucía (IAA),Institute of Astrophysics of Andalusia (IAA)
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- Livingston, John H. (author)
- University of Tokyo, Japan,Astrobiology Center, Japan,National Institutes of Natural Sciences (NINS)
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- Kabath, Petr (author)
- Czech Academy of Sciences
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- Skarka, Marek (author)
- Masarykova Univerzita,Masaryk University,Czech Academy of Sciences
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- Subjak, Jan (author)
- Czech Academy of Sciences,Univerzita Karlova,Charles University
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- Howell, Steve B. (author)
- NASA Ames Research Center
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- Albrecht, Simon H. (author)
- Århus Universitet,Aarhus University
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- Collins, Karen A. (author)
- Harvard-Smithsonian Center for Astrophysics
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- Esposito, Massimiliano (author)
- Thüringer Landessternwarte Tautenburg
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- Van Eylen, V. (author)
- University College London (UCL)
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- Grziwa, Sascha (author)
- Universität zu Köln,University of Cologne
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- Goffo, Elisa (author)
- Universita degli Studi di Torino,University of Turin,Thüringer Landessternwarte Tautenburg
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- Huang, Chelsea X. (author)
- Massachusetts Institute of Technology (MIT)
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- Jenkins, Jon M. (author)
- NASA Ames Research Center
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- Karjalainen, Marie (author)
- Czech Academy of Sciences
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- Karjalainen, Raine (author)
- Czech Academy of Sciences
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- Knudstrup, Emil (author)
- Århus Universitet,Aarhus University
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- Korth, Judith, 1987 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Lam, Kristine W. F. (author)
- Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)
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- Latham, David W. (author)
- Harvard-Smithsonian Center for Astrophysics
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- Levine, Alan M. (author)
- Massachusetts Institute of Technology (MIT)
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- Osborne, H. L. M. (author)
- University College London (UCL)
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- Quinn, Samuel N. (author)
- Harvard-Smithsonian Center for Astrophysics
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- Redfield, Seth (author)
- Wesleyan University
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- Ricker, George R. (author)
- Massachusetts Institute of Technology (MIT)
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- Seager, S. (author)
- Massachusetts Institute of Technology (MIT)
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- Serrano, Luisa Maria (author)
- Universita degli Studi di Torino,University of Turin
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- Smith, Alexis M. S. (author)
- Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)
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- Twicken, Joseph D. (author)
- SETI Institute,NASA Ames Research Center
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- Winn, Joshua N. (author)
- Princeton University
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(creator_code:org_t)
- 2022-04-21
- 2022
- English.
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In: Astronomical Journal. - : American Astronomical Society. - 1538-3881 .- 0004-6256. ; 163:5
- Related links:
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https://research.cha... (primary) (free)
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https://doi.org/10.3...
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Abstract
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- We report the discovery of two transiting planets around the bright (V = 9.9 mag) main-sequence F7 star TOI-1670 by the Transiting Exoplanet Survey Satellite. TOI-1670 b is a sub-Neptune (R-b = 2.06(-0.15)(+0.19) R-circle plus) on a 10.9 day orbit, and TOI-1670 c is a warm Jupiter (R-c= 0.987(-0.025)(+0.025) R-Jup) on a 40.7 day orbit. Using radial velocity observations gathered with the Tull Coude Spectrograph on the Harlan J. Smith telescope and HARPS-N on the Telescopio Nazionale Galileo, we find a planet mass of M-c = 0.63(-0.08)(+0.09) M(Jup )for the outer warm Jupiter, implying a mean density of rho(c) = 0.81(-0.11)(+0.13) g cm(-3). The inner sub-Neptune is undetected in our radial velocity data (M-b < 0.13 M-Jup at the 99% confidence level). Multiplanet systems like TOI-1670 hosting an outer warm Jupiter on a nearly circular orbit (l(e) = 0.09(-0.04)(+0.05)) and one or more inner coplanar planets are more consistent with "gentle" formation mechanisms such as disk migration or in situ formation rather than high-eccentricity migration. Of the 11 known systems with a warm Jupiter and a smaller inner companion, eight (73%) are near a low-order mean-motion resonance, which can be a signature of migration. TOI-1670 joins two other systems (27% of this subsample) with period commensurabilities greater than 3, a common feature of in situ formation or halted inward migration. TOI-1670 and the handful of similar systems support a diversity of formation pathways for warm Jupiters.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Tran, Quang H.
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Bowler, Brendan ...
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Endl, Michael
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Cochran, William ...
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MacQueen, Philli ...
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Gandolfi, Davide
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Persson, Carina, ...
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Fridlund, Malcol ...
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Palle, Enric
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Nowak, Grzegorz
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Deeg, Hans J.
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Luque, Rafael
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Livingston, John ...
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Kabath, Petr
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Skarka, Marek
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Subjak, Jan
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Howell, Steve B.
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Albrecht, Simon ...
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Collins, Karen A ...
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Esposito, Massim ...
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Van Eylen, V.
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Grziwa, Sascha
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Goffo, Elisa
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Huang, Chelsea X ...
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Jenkins, Jon M.
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Karjalainen, Mar ...
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Karjalainen, Rai ...
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Knudstrup, Emil
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Korth, Judith, 1 ...
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Lam, Kristine W. ...
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Latham, David W.
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Levine, Alan M.
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Osborne, H. L. M ...
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Quinn, Samuel N.
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Redfield, Seth
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Ricker, George R ...
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Seager, S.
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Serrano, Luisa M ...
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Smith, Alexis M. ...
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Twicken, Joseph ...
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Winn, Joshua N.
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- NATURAL SCIENCES
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NATURAL SCIENCES
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Chalmers University of Technology