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  • Otegi, J. F.Universität Zürich,University of Zürich,Université de Genève,University of Geneva (author)

TESS and HARPS reveal two sub-Neptunes around TOI 1062

  • Article/chapterEnglish2021

Publisher, publication year, extent ...

  • 2021-09-15
  • EDP Sciences,2021

Numbers

  • LIBRIS-ID:oai:research.chalmers.se:39a0962a-d306-4bea-84ba-10d5ef64f0c0
  • https://research.chalmers.se/publication/526116URI
  • https://doi.org/10.1051/0004-6361/202040247DOI

Supplementary language notes

  • Language:English
  • Summary in:English

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

Notes

  • The Transiting Exoplanet Survey Satellite (TESS) mission was designed to perform an all-sky search of planets around bright and nearby stars. Here we report the discovery of two sub-Neptunes orbiting around TOI 1062 (TIC 299799658), a V = 10.25 G9V star observed in the TESS Sectors 1, 13, 27, and 28. We use precise radial velocity observations from HARPS to confirm and characterize these two planets. TOI 1062b has a radius of 2.265 (+0.096)(-0.091) R-circle plus, a mass of 10.15 +/- 0.8 M-circle plus, and an orbital period of 4.1130 +/- 0.0015 days. The second planet is not transiting, has a minimum mass of 9.78 (+1.26)(-1.18) M-circle plus and is near the 2:1 mean motion resonance with the innermost planet with an orbital period of 7.972 (+0.018)(-0.024) days. We performed a dynamical analysis to explore the proximity of the system to this resonance, and to attempt further constraining the orbital parameters. The transiting planet has a mean density of 4.85(-0.74)(+0.84) g cm(-3) and an analysis of its internal structure reveals that it is expected to have a small volatile envelope accounting for 0.35% of the mass at most. The star's brightness and the proximity of the inner planet to what is know as the radius gap make it an interesting candidate for transmission spectroscopy, which could further constrain the composition and internal structure of TOI 1062b.

Subject headings and genre

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

  • Bouchy, F.Université de Genève,University of Geneva (author)
  • Helled, R.Universität Zürich,University of Zürich (author)
  • Armstrong, D. J.The University of Warwick (author)
  • Stalport, M.Université de Genève,University of Geneva (author)
  • Psaridi, A.Université de Genève,University of Geneva (author)
  • Delisle, J-BUniversité de Genève,University of Geneva (author)
  • Stassun, K. G.Vanderbilt University (author)
  • Delgado-Mena, E.Universidade do Porto,University of Porto (author)
  • Santos, N. C.Universidade do Porto,University of Porto (author)
  • Hara, N. C.Université de Genève,University of Geneva (author)
  • Collins, K.Harvard-Smithsonian Center for Astrophysics (author)
  • Gandhi, S.The University of Warwick (author)
  • Dorn, C.Universität Zürich,University of Zürich (author)
  • Brogi, M.The University of Warwick (author)
  • Fridlund, Malcolm,1952Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)malfri (author)
  • Osborn, H. P.Universität Bern,University of Bern,Massachusetts Institute of Technology (MIT) (author)
  • Hoyer, S.Aix-Marseille Université,Aix Marseille University (author)
  • Udry, S.Université de Genève,University of Geneva (author)
  • Hojjatpanah, S.Universidade do Porto,University of Porto (author)
  • Nielsen, L. D.Université de Genève,University of Geneva (author)
  • Dumusque, X.Université de Genève,University of Geneva (author)
  • Adibekyan, VUniversidade do Porto,University of Porto (author)
  • Conti, D. (author)
  • Schwarz, R. (author)
  • Wang, G. (author)
  • Figueira, P.European Southern Observatory Santiago,Universidade do Porto,University of Porto (author)
  • Lillo-Box, J. (author)
  • Hadjigeorghiou, A.The University of Warwick (author)
  • Bayliss, D.The University of Warwick (author)
  • Strom, P. A.The University of Warwick (author)
  • Sousa, S. G.Universidade do Porto,University of Porto (author)
  • Barrado, D. (author)
  • Osborn, A.The University of Warwick (author)
  • Barros, S. C. C.Universidade do Porto,University of Porto (author)
  • Brown, D. J. A.The University of Warwick (author)
  • Eastman, J. D.Harvard-Smithsonian Center for Astrophysics (author)
  • Ciardi, D. R.California Institute of Technology (Caltech) (author)
  • Vanderburg, A.The University of Texas at Austin, USA (author)
  • Goeke, R. F.Massachusetts Institute of Technology (MIT) (author)
  • Guerrero, N. M.Massachusetts Institute of Technology (MIT) (author)
  • Boyd, P. T.NASA Goddard Space Flight Center (author)
  • Caldwell, D. A.NASA Ames Research Center,SETI Institute (author)
  • Henze, C. E.NASA Ames Research Center (author)
  • McLean, B.Space Telescope Science Institute (STScI) (author)
  • Ricker, G.Massachusetts Institute of Technology (MIT) (author)
  • Vanderspek, R.Massachusetts Institute of Technology (MIT) (author)
  • Latham, D. W.Harvard-Smithsonian Center for Astrophysics (author)
  • Seager, S.Massachusetts Institute of Technology (MIT) (author)
  • Winn, J.Princeton University (author)
  • Jenkins, J. M.NASA Ames Research Center (author)
  • Universität ZürichUniversité de Genève (creator_code:org_t)

Related titles

  • In:Astronomy and Astrophysics: EDP Sciences6530004-63611432-0746

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