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  • Tran, Quang H.The University of Texas at Austin, USA (author)

TOI-1670 b and c: An Inner Sub-Neptune with an Outer Warm Jupiter Unlikely to Have Originated from High-eccentricity Migration

  • Article/chapterEnglish2022

Publisher, publication year, extent ...

  • 2022-04-21
  • American Astronomical Society,2022
  • electronicrdacarrier

Numbers

  • LIBRIS-ID:oai:research.chalmers.se:a7cd38ad-a243-4eac-b65b-c45158896cf1
  • https://doi.org/10.3847/1538-3881/ac5c4fDOI
  • https://research.chalmers.se/publication/530213URI

Supplementary language notes

  • Language:English
  • Summary in:English

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  • Subject category:art swepub-publicationtype
  • Subject category:ref swepub-contenttype

Notes

  • 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 and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Bowler, Brendan P.The University of Texas at Austin, USA (author)
  • Endl, MichaelThe University of Texas at Austin, USA,The University of Texas at Austin, USA (author)
  • Cochran, William D.The University of Texas at Austin, USA,The University of Texas at Austin, USA (author)
  • MacQueen, Phillip J.The University of Texas at Austin, USA (author)
  • Gandolfi, DavideUniversita degli Studi di Torino,University of Turin (author)
  • Persson, Carina,1964Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)carina64 (author)
  • Fridlund, Malcolm,1952Universiteit Leiden (UL),Leiden University (UL),Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)malfri (author)
  • Palle, EnricInstituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna (author)
  • Nowak, GrzegorzUniversidad de la Laguna,University of La Laguna,Instituto de Astrofísica de Canarias (author)
  • Deeg, Hans J.Instituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna (author)
  • Luque, RafaelInstituto de Astrofisica de Andalucía (IAA),Institute of Astrophysics of Andalusia (IAA) (author)
  • Livingston, John H.University of Tokyo, Japan,Astrobiology Center, Japan,National Institutes of Natural Sciences (NINS) (author)
  • Kabath, PetrCzech Academy of Sciences (author)
  • Skarka, MarekMasarykova Univerzita,Masaryk University,Czech Academy of Sciences (author)
  • Subjak, JanCzech Academy of Sciences,Univerzita Karlova,Charles University (author)
  • Howell, Steve B.NASA Ames Research Center (author)
  • Albrecht, Simon H.Århus Universitet,Aarhus University (author)
  • Collins, Karen A.Harvard-Smithsonian Center for Astrophysics (author)
  • Esposito, MassimilianoThüringer Landessternwarte Tautenburg (author)
  • Van Eylen, V.University College London (UCL) (author)
  • Grziwa, SaschaUniversität zu Köln,University of Cologne (author)
  • Goffo, ElisaUniversita degli Studi di Torino,University of Turin,Thüringer Landessternwarte Tautenburg (author)
  • Huang, Chelsea X.Massachusetts Institute of Technology (MIT) (author)
  • Jenkins, Jon M.NASA Ames Research Center (author)
  • Karjalainen, MarieCzech Academy of Sciences (author)
  • Karjalainen, RaineCzech Academy of Sciences (author)
  • Knudstrup, EmilÅrhus Universitet,Aarhus University (author)
  • Korth, Judith,1987Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)korth (author)
  • Lam, Kristine W. F.Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR) (author)
  • Latham, David W.Harvard-Smithsonian Center for Astrophysics (author)
  • Levine, Alan M.Massachusetts Institute of Technology (MIT) (author)
  • Osborne, H. L. M.University College London (UCL) (author)
  • Quinn, Samuel N.Harvard-Smithsonian Center for Astrophysics (author)
  • Redfield, SethWesleyan University (author)
  • Ricker, George R.Massachusetts Institute of Technology (MIT) (author)
  • Seager, S.Massachusetts Institute of Technology (MIT) (author)
  • Serrano, Luisa MariaUniversita degli Studi di Torino,University of Turin (author)
  • Smith, Alexis M. S.Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR) (author)
  • Twicken, Joseph D.SETI Institute,NASA Ames Research Center (author)
  • Winn, Joshua N.Princeton University (author)
  • The University of Texas at Austin, USAUniversita degli Studi di Torino (creator_code:org_t)

Related titles

  • In:Astronomical Journal: American Astronomical Society163:51538-38810004-6256

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