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TOI-674b: An oasis ...
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Murgas, F.Universidad de la Laguna,University of La Laguna,Instituto de Astrofísica de Canarias
(author)
TOI-674b: An oasis in the desert of exo-Neptunes transiting a nearby M dwarf
- Article/chapterEnglish2021
Publisher, publication year, extent ...
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2021-09-07
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EDP Sciences,2021
Numbers
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LIBRIS-ID:oai:research.chalmers.se:3e31b584-ef30-4a92-ad7c-9e1e0f8817c3
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https://research.chalmers.se/publication/526042URI
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https://doi.org/10.1051/0004-6361/202140718DOI
Supplementary language notes
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Language:English
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Summary in:English
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Subject category:art swepub-publicationtype
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Subject category:ref swepub-contenttype
Notes
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Context. The NASA mission TESS is currently doing an all-sky survey from space to detect transiting planets around bright stars. As part of the validation process, the most promising planet candidates need to be confirmed and characterized using follow-up observations. Aims. In this article, our aim is to confirm the planetary nature of the transiting planet candidate TOI-674b using spectroscopic and photometric observations. Methods. We use TESS, Spitzer, ground-based light curves, and HARPS spectrograph radial velocity measurements to establish the physical properties of the transiting exoplanet candidate TOI-674b. We perform a joint fit of the light curves and radial velocity time series to measure the mass, radius, and orbital parameters of the candidate. Results. We confirm and characterize TOI-674b, a low-density super-Neptune transiting a nearby M dwarf. The host star (TIC 158588995, V = 14.2 mag, J = 10.3 mag) is characterized by its M2V spectral type with M = 0.420 ± 0.010 M , R = 0.420 ± 0.013 R , and Teff = 3514 ± 57 K; it is located at a distance d = 46.16 ± 0.03 pc. Combining the available transit light curves plus radial velocity measurements and jointly fitting a circular orbit model, we find an orbital period of 1.977143 ± 3 × 10-6 days, a planetary radius of 5.25 ± 0.17 R , and a mass of 23.6 ± 3.3 M implying a mean density of ρp =0.91 ± 0.15 g cm-3. A non-circular orbit model fit delivers similar planetary mass and radius values within the uncertainties. Given the measured planetary radius and mass, TOI-674b is one of the largest and most massive super-Neptune class planets discovered around an M-type star to date. It is found in the Neptunian desert, and is a promising candidate for atmospheric characterization using the James Webb Space Telescope.
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Astudillo-Defru, N.Universidad Catolica de la Santisima Concepcion
(author)
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Bonfils, X.Université Grenoble Alpes,Grenoble Alpes University
(author)
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Crossfield, I. J.M.University of Kansas
(author)
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Almenara, J. M.Université Grenoble Alpes,Grenoble Alpes University
(author)
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Livingston, J.H.University of Tokyo, Japan
(author)
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Stassun, Keivan G.Vanderbilt University
(author)
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Korth, Judith,1987Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)korth
(author)
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Orell-Miquel, J.Universidad de la Laguna,University of La Laguna,Instituto de Astrofísica de Canarias
(author)
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Morello, GiuseppeInstituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna
(author)
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Eastman, J. D.Harvard-Smithsonian Center for Astrophysics
(author)
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Lissauer, Jack J.NASA Ames Research Center
(author)
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Kane, S. R.University of California
(author)
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Morales, F. Y.
(author)
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Werner, M. W.Universidad Catolica de la Santisima Concepcion
(author)
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Gorjian, V.Universidad Catolica de la Santisima Concepcion
(author)
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Benneke, B.Université de Montréal
(author)
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Dragomir, D.University of New Mexico
(author)
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Matthews, ElisabethUniversité de Genève,University of Geneva
(author)
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Howell, S.B.NASA Ames Research Center
(author)
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Ciardi, D. R.California Institute of Technology (Caltech)
(author)
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Gonzales, Erica J.University of California
(author)
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Matson, Rachel A.
(author)
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Beichman, C.California Institute of Technology (Caltech)
(author)
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Schlieder, Joshua E.NASA Goddard Space Flight Center
(author)
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Collins, Karen A.Harvard-Smithsonian Center for Astrophysics
(author)
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Collins, Kevin I.George Mason University
(author)
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Jensen, Eric L.N.Swarthmore College
(author)
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Evans, P.
(author)
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Pozuelos, Francisco J.Universite de Liège,University of Liège
(author)
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Gillon, MichaëlUniversite de Liège,University of Liège
(author)
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Jehin, EmmanuelUniversite de Liège,University of Liège
(author)
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Barkaoui, KhalidUniversité Cadi Ayyad,Cadi Ayyad University,Universite de Liège,University of Liège
(author)
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Artigau, E.Consejo Nacional de Investigaciones Cientificas y Tecnicas
(author)
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Bouchy, F.Université de Genève,University of Geneva
(author)
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Charbonneau, D.Harvard-Smithsonian Center for Astrophysics
(author)
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Delfosse, X.Université Grenoble Alpes,Grenoble Alpes University
(author)
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Diaz, R. F.Consejo Nacional de Investigaciones Cientificas y Tecnicas
(author)
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Doyon, RenéUniversité de Montréal
(author)
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Figueira, P.European Southern Observatory Santiago,Universidade do Porto,University of Porto
(author)
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Forveille, T.Université Grenoble Alpes,Grenoble Alpes University
(author)
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Lovis, C.Université de Genève,University of Geneva
(author)
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Melo, C.European Southern Observatory Santiago
(author)
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Gaisné, G.Université Grenoble Alpes,Grenoble Alpes University
(author)
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Pepe, FrancescoUniversité de Genève,University of Geneva
(author)
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Santos, N. C.Universidade do Porto,University of Porto
(author)
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Segransan, D.Université de Genève,University of Geneva
(author)
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Udry, S.Université de Genève,University of Geneva
(author)
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Goeke, RobertMassachusetts Institute of Technology (MIT)
(author)
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Levine, A. M.Massachusetts Institute of Technology (MIT)
(author)
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Quintana, E. V.NASA Goddard Space Flight Center
(author)
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Guerrero, N.Massachusetts Institute of Technology (MIT)
(author)
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Mireles, IsmaelMassachusetts Institute of Technology (MIT)
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Caldwell, D. A.SETI Institute,NASA Ames Research Center
(author)
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Tenenbaum, P.SETI Institute,NASA Ames Research Center
(author)
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Brasseur, C. E.Space Telescope Science Institute (STScI)
(author)
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Ricker, George R.Massachusetts Institute of Technology (MIT)
(author)
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Vanderspek, Roland K.Massachusetts Institute of Technology (MIT)
(author)
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Latham, D. W.Harvard-Smithsonian Center for Astrophysics
(author)
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Seager, S.Massachusetts Institute of Technology (MIT)
(author)
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Winn, J. N.Princeton University
(author)
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Jenkins, Jon M.NASA Ames Research Center
(author)
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Universidad de la LagunaInstituto de Astrofísica de Canarias
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In:Astronomy and Astrophysics: EDP Sciences6530004-63611432-0746
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Murgas, F.
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Astudillo-Defru, ...
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Bonfils, X.
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Crossfield, I. J ...
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Almenara, J. M.
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Livingston, J.H.
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Stassun, Keivan ...
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Korth, Judith, 1 ...
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Orell-Miquel, J.
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Morello, Giusepp ...
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Eastman, J. D.
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Lissauer, Jack J ...
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Kane, S. R.
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Morales, F. Y.
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Werner, M. W.
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Gorjian, V.
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Benneke, B.
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Dragomir, D.
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Matthews, Elisab ...
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Howell, S.B.
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Ciardi, D. R.
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Gonzales, Erica ...
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Matson, Rachel A ...
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Beichman, C.
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Schlieder, Joshu ...
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Collins, Karen A ...
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Collins, Kevin I ...
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Jensen, Eric L.N ...
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Evans, P.
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Pozuelos, Franci ...
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Gillon, Michaël
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Jehin, Emmanuel
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Barkaoui, Khalid
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Artigau, E.
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Bouchy, F.
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Charbonneau, D.
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Delfosse, X.
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Diaz, R. F.
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Doyon, René
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Figueira, P.
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Forveille, T.
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Lovis, C.
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Melo, C.
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Gaisné, G.
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Pepe, Francesco
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Santos, N. C.
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Segransan, D.
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Udry, S.
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Goeke, Robert
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Levine, A. M.
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Quintana, E. V.
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Guerrero, N.
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Mireles, Ismael
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Caldwell, D. A.
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Tenenbaum, P.
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Brasseur, C. E.
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Ricker, George R ...
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Vanderspek, Rola ...
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Latham, D. W.
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Seager, S.
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Winn, J. N.
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Jenkins, Jon M.
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