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TOI-1408: Discovery...
TOI-1408: Discovery and Photodynamical Modeling of a Small Inner Companion to a Hot Jupiter Revealed by Transit Timing Variations
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- Korth, Judith (author)
- Lunds universitet,Lund University
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- Chaturvedi, Priyanka (author)
- Thüringer Landessternwarte Tautenburg,Tata Institute of Fundamental Research
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- Parviainen, H. (author)
- Instituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna
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- Carleo, Ilaria (author)
- Universidad de la Laguna,University of La Laguna,Instituto de Astrofísica de Canarias,Istituto nazionale di astrofisica (INAF)
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- Endl, Michael (author)
- The University of Texas at Austin, USA
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- Guenther, E. W. (author)
- Thüringer Landessternwarte Tautenburg
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- Nowak, G. (author)
- Uniwersytet Mikolaja Kopernika w Toruniu,Nicolaus Copernicus University,Universidad de la Laguna,University of La Laguna,Instituto de Astrofísica de Canarias
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- Persson, Carina, 1964 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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MacQueen, P. (author)
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- Mustill, A. J. (author)
- Lunds universitet,Lund University
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- Cabrera, J. (author)
- Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)
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- Cochran, William D. (author)
- The University of Texas at Austin, USA
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- Lillo-Box, J. (author)
- Centro de Astrobiologia (CAB)
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- Hobbs, D. (author)
- Lunds universitet,Lund University
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- Murgas, F. (author)
- Universidad de la Laguna,University of La Laguna,Instituto de Astrofísica de Canarias
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- Greklek-McKeon, Michael (author)
- California Institute of Technology (Caltech)
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- Kellermann, Hanna (author)
- Ludwig-Maximilians-Universität München,Ludwig Maximilian University of Munich
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- Hebrard, G. (author)
- Centre national de la recherche scientifique (CNRS),Institut d 'Astrophysique de Paris
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- Fukui, A. (author)
- University of Tokyo, Japan,Instituto de Astrofísica de Canarias
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- Palle, Enric (author)
- Universidad de la Laguna,University of La Laguna,Instituto de Astrofísica de Canarias
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- Jenkins, Jon M. (author)
- NASA Ames Research Center
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- Twicken, J. D. (author)
- NASA Ames Research Center,SETI Institute
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- Collins, Karen A. (author)
- Harvard-Smithsonian Center for Astrophysics
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- Quinn, Samuel N. (author)
- Harvard-Smithsonian Center for Astrophysics
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- Šubjak, J. (author)
- Harvard-Smithsonian Center for Astrophysics,Czech Academy of Sciences
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- Beck, P. G. (author)
- Instituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna
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- Gandolfi, D. (author)
- Universita degli Studi di Torino,University of Turin
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- Mathur, S. (author)
- Universidad de la Laguna,University of La Laguna,Instituto de Astrofísica de Canarias
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- Deeg, H. (author)
- Instituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna
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- Latham, D. W. (author)
- Harvard-Smithsonian Center for Astrophysics
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- Albrecht, Simon (author)
- Århus Universitet,Aarhus University
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- Barrado, D. (author)
- Centro de Astrobiologia (CAB)
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- Boisse, I. (author)
- Centre national de la recherche scientifique (CNRS),Laboratoire d'Astrophysique de Marseille
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- Bouy, Hervé (author)
- Institut Universitaire de France,Laboratoire d'Astrophysique de Bordeaux
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Delfosse, X. (author)
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- Demangeon, O. (author)
- Universidade do Porto,University of Porto
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- García, R. A. (author)
- Université Paris-Saclay,University Paris-Saclay
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- Hatzes, A. (author)
- Thüringer Landessternwarte Tautenburg
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- Heidari, N. (author)
- Institut d 'Astrophysique de Paris
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- Ikuta, Kai (author)
- University of Tokyo, Japan
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- Kabath, Petr (author)
- Czech Academy of Sciences
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- Knutson, H. (author)
- California Institute of Technology (Caltech)
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- Livingston, J.H. (author)
- The Graduate University for Advanced Studies (SOKENDAI),National Institutes of Natural Sciences (NINS),National Astronomical Observatory of Japan
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- Martioli, E. (author)
- Institut d 'Astrophysique de Paris
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- Morales-Calderon, M. (author)
- Centro de Astrobiologia (CAB)
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- Morello, Giuseppe (author)
- Instituto de Astrofisica de Andalucía (IAA),Institute of Astrophysics of Andalusia (IAA),Instituto de Astrofísica de Canarias
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- Narita, Norio (author)
- University of Tokyo, Japan,National Institutes of Natural Sciences (NINS),Instituto de Astrofísica de Canarias
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- Orell-Miquel, J. (author)
- Universidad de la Laguna,University of La Laguna,Instituto de Astrofísica de Canarias
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- Osborne, H. L.M. (author)
- European Southern Observatory (ESO),University College London (UCL)
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- Palakkatharappil, Dinil B. (author)
- Université Paris-Saclay,University Paris-Saclay
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- Pinter, Viktoria (author)
- Nordic Optical Telescope
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- Redfield, S. (author)
- Wesleyan University
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- Relles, Howard M. (author)
- Harvard-Smithsonian Center for Astrophysics
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- Schwarz, R. (author)
- Harvard-Smithsonian Center for Astrophysics
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- Seager, S. (author)
- Massachusetts Institute of Technology (MIT)
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- Shporer, Avi (author)
- Massachusetts Institute of Technology (MIT)
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- Skarka, Marek (author)
- Masarykova Univerzita,Masaryk University,Czech Academy of Sciences
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Srdoc, G. (author)
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- Stangret, M. (author)
- Istituto nazionale di astrofisica (INAF)
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- Thomas, Luis (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG),Ludwig-Maximilians-Universität München,Ludwig Maximilian University of Munich
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- Van Eylen, Vincent (author)
- University College London (UCL)
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- Watanabe, Noriharu (author)
- University of Tokyo, Japan
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- Winn, J. N. (author)
- Princeton University
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(creator_code:org_t)
- 2024
- 2024
- English.
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In: Astrophysical Journal Letters. - 2041-8213 .- 2041-8205. ; 971:2
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https://research.cha...
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https://doi.org/10.3...
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Abstract
Subject headings
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- We report the discovery and characterization of a small planet, TOI-1408 c, on a 2.2 day orbit located interior to a previously known hot Jupiter, TOI-1408 b (P = 4.42 days, M = 1.86 ± 0.02 M Jup, R = 2.4 ± 0.5 R Jup) that exhibits grazing transits. The two planets are near 2:1 period commensurability, resulting in significant transit timing variations (TTVs) for both planets and transit duration variations for the inner planet. The TTV amplitude for TOI-1408 c is 15% of the planet’s orbital period, marking the largest TTV amplitude relative to the orbital period measured to date. Photodynamical modeling of ground-based radial velocity (RV) observations and transit light curves obtained with the Transiting Exoplanet Survey Satellite and ground-based facilities leads to an inner planet radius of 2.22 ± 0.06 R ⊕ and mass of 7.6 ± 0.2 M ⊕ that locates the planet into the sub-Neptune regime. The proximity to the 2:1 period commensurability leads to the libration of the resonant argument of the inner planet. The RV measurements support the existence of a third body with an orbital period of several thousand days. This discovery places the system among the rare systems featuring a hot Jupiter accompanied by an inner low-mass planet.
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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Korth, Judith
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Chaturvedi, Priy ...
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Parviainen, H.
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Carleo, Ilaria
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Endl, Michael
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Guenther, E. W.
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show more...
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Nowak, G.
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Persson, Carina, ...
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MacQueen, P.
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Mustill, A. J.
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Cabrera, J.
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Cochran, William ...
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Lillo-Box, J.
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Hobbs, D.
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Murgas, F.
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Greklek-McKeon, ...
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Kellermann, Hann ...
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Hebrard, G.
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Fukui, A.
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Palle, Enric
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Jenkins, Jon M.
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Twicken, J. D.
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Collins, Karen A ...
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Quinn, Samuel N.
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Šubjak, J.
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Beck, P. G.
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Gandolfi, D.
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Mathur, S.
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Deeg, H.
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Latham, D. W.
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Albrecht, Simon
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Barrado, D.
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Boisse, I.
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Bouy, Hervé
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Delfosse, X.
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Demangeon, O.
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García, R. A.
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Hatzes, A.
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Heidari, N.
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Ikuta, Kai
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Kabath, Petr
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Knutson, H.
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Livingston, J.H.
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Martioli, E.
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Morales-Calderon ...
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Morello, Giusepp ...
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Narita, Norio
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Orell-Miquel, J.
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Osborne, H. L.M.
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Palakkatharappil ...
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Pinter, Viktoria
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Redfield, S.
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Relles, Howard M ...
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Schwarz, R.
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Seager, S.
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Shporer, Avi
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Skarka, Marek
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Srdoc, G.
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Stangret, M.
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Thomas, Luis
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Van Eylen, Vince ...
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Watanabe, Noriha ...
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Winn, J. N.
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
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Astrophysical Jo ...
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Chalmers University of Technology