TOI-674b: An oasis in the desert of exo-Neptunes transiting a nearby M dwarf

Autores
Murgas, F.; Astudillo Defru, Nicola; Bonfils, X.; Crossfield, I.; Almenara, J. M.; Livingston, John; Stassun, Keivan G.; Korth, Judith; Orell Miquel, Jaume; Morello, G.; Eastman, J. D.; Lissauer, J. J.; Kane, S. R.; Morales, F. Y.; Werner, M. W.; Gorjian, V.; Benneke, B.; Dragomir, D.; Matthews, E. C.; Howell, S. B.; Ciardi, D.; Gonzales, E.; Matson, R.; Beichman, C.; Schlieder, J.; Collins, K. A.; Collins, K. I.; Jensen, E. L. N.; Evans, P.; Pozuelos, F. J.; Gillon, M.; Jehin, E.; Barkaoui, K.; Artigau, E.; Bouchy, F.; Charbonneau, D.; Delfosse, X.; Díaz, Rodrigo Fernando; Doyon, R.; Figueira, P.; Forveille, T.; Lovis, C.; Melo, C.; Gaisné, G.; Pepe, F.; Santos, N. C.; Ségransan, D.; Udry, S.; Goeke, R. F.; Levine, A. M.; Quintana, E. V.; Guerrero, N. M.; Mireles, I.; Caldwell, D. A.; Tenenbaum, P.; Brasseur, C. E.; Ricker, G.; Vanderspek, R.; Latham, D. W.; Seager, S.; Winn, J.; Jenkins, J. M.
Año de publicación
2021
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
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.
Fil: Murgas, F.. Universidad de La Laguna; España. Instituto Astrofísico de Canarias; España
Fil: Astudillo Defru, Nicola. Universidad Católica de la Santísima Concepción; Chile
Fil: Bonfils, X.. Universite Grenoble Alpes; Francia
Fil: Crossfield, I.. University of Kansas; Estados Unidos
Fil: Almenara, J. M.. Universite Grenoble Alpes; Francia
Fil: Livingston, John. University of Tokyo; Japón
Fil: Stassun, Keivan G.. Vanderbilt University; Estados Unidos
Fil: Korth, Judith. Chalmers University of Technology; Suecia
Fil: Orell Miquel, Jaume. Universidad de La Laguna; España. Instituto Astrofisico de Canarias; España
Fil: Morello, G.. Universidad de La Laguna; España. Instituto Astrofísico de Canarias; España
Fil: Eastman, J. D.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos
Fil: Lissauer, J. J.. Nasa Ames Research Center; Estados Unidos
Fil: Kane, S. R.. University of California; Estados Unidos
Fil: Morales, F. Y.. Jet Propulsion Laboratory; Estados Unidos
Fil: Werner, M. W.. Universidad Católica de la Santísima Concepción; Chile
Fil: Gorjian, V.. Universidad Católica de la Santísima Concepción; Chile
Fil: Benneke, B.. Institut de Recherche Sur Les Exoplanètes; Canadá
Fil: Dragomir, D.. University of New Mexico; Estados Unidos
Fil: Matthews, E. C.. Universidad de Ginebra; Suiza
Fil: Howell, S. B.. Nasa Ames Research Center; Estados Unidos
Fil: Ciardi, D.. California Institute of Technology; Estados Unidos
Fil: Gonzales, E.. University of California at Santa Cruz; Estados Unidos
Fil: Matson, R.. US Naval Observatory; Estados Unidos
Fil: Beichman, C.. California Institute of Technology; Estados Unidos
Fil: Schlieder, J.. Nasa Goddard Space Flight Center; Estados Unidos
Fil: Collins, K. A.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos
Fil: Collins, K. I.. George Mason University; Estados Unidos
Fil: Jensen, E. L. N.. Swarthmore College; Estados Unidos
Fil: Evans, P.. Observatorio El Sauce; Chile
Fil: Pozuelos, F. J.. Université de Liège; Bélgica
Fil: Gillon, M.. Université de Liège; Bélgica
Fil: Jehin, E.. Université de Liège; Bélgica
Fil: Barkaoui, K.. Université de Liège; Bélgica. Université Cadi Ayyad; Marruecos
Fil: Artigau, E.. University of Montreal; Canadá
Fil: Bouchy, F.. Universidad de Ginebra; Suiza
Fil: Charbonneau, D.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos
Fil: Delfosse, X.. Universite Grenoble Alpes; Francia
Fil: Díaz, Rodrigo Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Doyon, R.. Institut de Recherche Sur Les Exoplanètes; Canadá
Fil: Figueira, P.. European Southern Observatory Santiago; Chile. Universidad de Porto; Portugal
Fil: Forveille, T.. Universite Grenoble Alpes; Francia
Fil: Lovis, C.. Universidad de Ginebra; Suiza
Fil: Melo, C.. European Southern Observatory Santiago; Chile
Fil: Gaisné, G.. Universite Grenoble Alpes; Francia
Fil: Pepe, F.. Universidad de Ginebra; Suiza
Fil: Santos, N. C.. Universidad de Porto; Portugal
Fil: Ségransan, D.. Universidad de Ginebra; Suiza
Fil: Udry, S.. Universidad de Ginebra; Suiza
Fil: Goeke, R. F.. Massachusetts Institute of Technology; Estados Unidos
Fil: Levine, A. M.. Mit Kavli Institute for Astrophysics and Space Research; Estados Unidos
Fil: Quintana, E. V.. Nasa Goddard Space Flight Center; Estados Unidos
Fil: Guerrero, N. M.. Mit Kavli Institute For Astrophysics And Space Research; Estados Unidos
Fil: Mireles, I.. Mit Kavli Institute for Astrophysics and Space Research; Estados Unidos
Fil: Caldwell, D. A.. Seti Institute; Estados Unidos. Nasa Ames Research Center; Estados Unidos
Fil: Tenenbaum, P.. Seti Institute; Estados Unidos. Nasa Ames Research Center; Estados Unidos
Fil: Brasseur, C. E.. Space Telescope Science Institute; Estados Unidos
Fil: Ricker, G.. Mit Kavli Institute for Astrophysics and Space Research; Estados Unidos
Fil: Vanderspek, R.. Mit Kavli Institute for Astrophysics and Space Research; Estados Unidos
Fil: Latham, D. W.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos
Fil: Seager, S.. Mit Kavli Institute for Astrophysics and Space Research; Estados Unidos. Massachusetts Institute of Technology; Estados Unidos
Fil: Winn, J.. University of Princeton; Estados Unidos
Fil: Jenkins, J. M.. Nasa Ames Research Center; Estados Unidos
Materia
PLANETS AND SATELLITES: GASEOUS PLANETS
PLANETS AND SATELLITES: GENERAL
STARS: INDIVIDUAL: TOI-674
TECHNIQUES: PHOTOMETRIC
TECHNIQUES: RADIAL VELOCITIES
PLANETARY SYSTEMS
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/154607
Acceder
id CONICETDig_e9ff14cd9c54bbf43f30ab25606e1421
oai_identifier_str oai:ri.conicet.gov.ar:11336/154607
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling TOI-674b: An oasis in the desert of exo-Neptunes transiting a nearby M dwarfMurgas, F.Astudillo Defru, NicolaBonfils, X.Crossfield, I.Almenara, J. M.Livingston, JohnStassun, Keivan G.Korth, JudithOrell Miquel, JaumeMorello, G.Eastman, J. D.Lissauer, J. J.Kane, S. R.Morales, F. Y.Werner, M. W.Gorjian, V.Benneke, B.Dragomir, D.Matthews, E. C.Howell, S. B.Ciardi, D.Gonzales, E.Matson, R.Beichman, C.Schlieder, J.Collins, K. A.Collins, K. I.Jensen, E. L. N.Evans, P.Pozuelos, F. J.Gillon, M.Jehin, E.Barkaoui, K.Artigau, E.Bouchy, F.Charbonneau, D.Delfosse, X.Díaz, Rodrigo FernandoDoyon, R.Figueira, P.Forveille, T.Lovis, C.Melo, C.Gaisné, G.Pepe, F.Santos, N. C.Ségransan, D.Udry, S.Goeke, R. F.Levine, A. M.Quintana, E. V.Guerrero, N. M.Mireles, I.Caldwell, D. A.Tenenbaum, P.Brasseur, C. E.Ricker, G.Vanderspek, R.Latham, D. W.Seager, S.Winn, J.Jenkins, J. M.PLANETS AND SATELLITES: GASEOUS PLANETSPLANETS AND SATELLITES: GENERALSTARS: INDIVIDUAL: TOI-674TECHNIQUES: PHOTOMETRICTECHNIQUES: RADIAL VELOCITIESPLANETARY SYSTEMShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Context. 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.Fil: Murgas, F.. Universidad de La Laguna; España. Instituto Astrofísico de Canarias; EspañaFil: Astudillo Defru, Nicola. Universidad Católica de la Santísima Concepción; ChileFil: Bonfils, X.. Universite Grenoble Alpes; FranciaFil: Crossfield, I.. University of Kansas; Estados UnidosFil: Almenara, J. M.. Universite Grenoble Alpes; FranciaFil: Livingston, John. University of Tokyo; JapónFil: Stassun, Keivan G.. Vanderbilt University; Estados UnidosFil: Korth, Judith. Chalmers University of Technology; SueciaFil: Orell Miquel, Jaume. Universidad de La Laguna; España. Instituto Astrofisico de Canarias; EspañaFil: Morello, G.. Universidad de La Laguna; España. Instituto Astrofísico de Canarias; EspañaFil: Eastman, J. D.. Harvard-Smithsonian Center for Astrophysics; Estados UnidosFil: Lissauer, J. J.. Nasa Ames Research Center; Estados UnidosFil: Kane, S. R.. University of California; Estados UnidosFil: Morales, F. Y.. Jet Propulsion Laboratory; Estados UnidosFil: Werner, M. W.. Universidad Católica de la Santísima Concepción; ChileFil: Gorjian, V.. Universidad Católica de la Santísima Concepción; ChileFil: Benneke, B.. Institut de Recherche Sur Les Exoplanètes; CanadáFil: Dragomir, D.. University of New Mexico; Estados UnidosFil: Matthews, E. C.. Universidad de Ginebra; SuizaFil: Howell, S. B.. Nasa Ames Research Center; Estados UnidosFil: Ciardi, D.. California Institute of Technology; Estados UnidosFil: Gonzales, E.. University of California at Santa Cruz; Estados UnidosFil: Matson, R.. US Naval Observatory; Estados UnidosFil: Beichman, C.. California Institute of Technology; Estados UnidosFil: Schlieder, J.. Nasa Goddard Space Flight Center; Estados UnidosFil: Collins, K. A.. Harvard-Smithsonian Center for Astrophysics; Estados UnidosFil: Collins, K. I.. George Mason University; Estados UnidosFil: Jensen, E. L. N.. Swarthmore College; Estados UnidosFil: Evans, P.. Observatorio El Sauce; ChileFil: Pozuelos, F. J.. Université de Liège; BélgicaFil: Gillon, M.. Université de Liège; BélgicaFil: Jehin, E.. Université de Liège; BélgicaFil: Barkaoui, K.. Université de Liège; Bélgica. Université Cadi Ayyad; MarruecosFil: Artigau, E.. University of Montreal; CanadáFil: Bouchy, F.. Universidad de Ginebra; SuizaFil: Charbonneau, D.. Harvard-Smithsonian Center for Astrophysics; Estados UnidosFil: Delfosse, X.. Universite Grenoble Alpes; FranciaFil: Díaz, Rodrigo Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Doyon, R.. Institut de Recherche Sur Les Exoplanètes; CanadáFil: Figueira, P.. European Southern Observatory Santiago; Chile. Universidad de Porto; PortugalFil: Forveille, T.. Universite Grenoble Alpes; FranciaFil: Lovis, C.. Universidad de Ginebra; SuizaFil: Melo, C.. European Southern Observatory Santiago; ChileFil: Gaisné, G.. Universite Grenoble Alpes; FranciaFil: Pepe, F.. Universidad de Ginebra; SuizaFil: Santos, N. C.. Universidad de Porto; PortugalFil: Ségransan, D.. Universidad de Ginebra; SuizaFil: Udry, S.. Universidad de Ginebra; SuizaFil: Goeke, R. F.. Massachusetts Institute of Technology; Estados UnidosFil: Levine, A. M.. Mit Kavli Institute for Astrophysics and Space Research; Estados UnidosFil: Quintana, E. V.. Nasa Goddard Space Flight Center; Estados UnidosFil: Guerrero, N. M.. Mit Kavli Institute For Astrophysics And Space Research; Estados UnidosFil: Mireles, I.. Mit Kavli Institute for Astrophysics and Space Research; Estados UnidosFil: Caldwell, D. A.. Seti Institute; Estados Unidos. Nasa Ames Research Center; Estados UnidosFil: Tenenbaum, P.. Seti Institute; Estados Unidos. Nasa Ames Research Center; Estados UnidosFil: Brasseur, C. E.. Space Telescope Science Institute; Estados UnidosFil: Ricker, G.. Mit Kavli Institute for Astrophysics and Space Research; Estados UnidosFil: Vanderspek, R.. Mit Kavli Institute for Astrophysics and Space Research; Estados UnidosFil: Latham, D. W.. Harvard-Smithsonian Center for Astrophysics; Estados UnidosFil: Seager, S.. Mit Kavli Institute for Astrophysics and Space Research; Estados Unidos. Massachusetts Institute of Technology; Estados UnidosFil: Winn, J.. University of Princeton; Estados UnidosFil: Jenkins, J. M.. Nasa Ames Research Center; Estados UnidosEDP Sciences2021-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/154607Murgas, F.; Astudillo Defru, Nicola; Bonfils, X.; Crossfield, I.; Almenara, J. M.; et al.; TOI-674b: An oasis in the desert of exo-Neptunes transiting a nearby M dwarf; EDP Sciences; Astronomy and Astrophysics; 653; 9-2021; 1-220004-6361CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/202140718info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/full_html/2021/09/aa40718-21/aa40718-21.htmlinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:04:02Zoai:ri.conicet.gov.ar:11336/154607instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-10 13:04:02.972CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv TOI-674b: An oasis in the desert of exo-Neptunes transiting a nearby M dwarf
title TOI-674b: An oasis in the desert of exo-Neptunes transiting a nearby M dwarf
spellingShingle TOI-674b: An oasis in the desert of exo-Neptunes transiting a nearby M dwarf
Murgas, F.
PLANETS AND SATELLITES: GASEOUS PLANETS
PLANETS AND SATELLITES: GENERAL
STARS: INDIVIDUAL: TOI-674
TECHNIQUES: PHOTOMETRIC
TECHNIQUES: RADIAL VELOCITIES
PLANETARY SYSTEMS
title_short TOI-674b: An oasis in the desert of exo-Neptunes transiting a nearby M dwarf
title_full TOI-674b: An oasis in the desert of exo-Neptunes transiting a nearby M dwarf
title_fullStr TOI-674b: An oasis in the desert of exo-Neptunes transiting a nearby M dwarf
title_full_unstemmed TOI-674b: An oasis in the desert of exo-Neptunes transiting a nearby M dwarf
title_sort TOI-674b: An oasis in the desert of exo-Neptunes transiting a nearby M dwarf
dc.creator.none.fl_str_mv Murgas, F.
Astudillo Defru, Nicola
Bonfils, X.
Crossfield, I.
Almenara, J. M.
Livingston, John
Stassun, Keivan G.
Korth, Judith
Orell Miquel, Jaume
Morello, G.
Eastman, J. D.
Lissauer, J. J.
Kane, S. R.
Morales, F. Y.
Werner, M. W.
Gorjian, V.
Benneke, B.
Dragomir, D.
Matthews, E. C.
Howell, S. B.
Ciardi, D.
Gonzales, E.
Matson, R.
Beichman, C.
Schlieder, J.
Collins, K. A.
Collins, K. I.
Jensen, E. L. N.
Evans, P.
Pozuelos, F. J.
Gillon, M.
Jehin, E.
Barkaoui, K.
Artigau, E.
Bouchy, F.
Charbonneau, D.
Delfosse, X.
Díaz, Rodrigo Fernando
Doyon, R.
Figueira, P.
Forveille, T.
Lovis, C.
Melo, C.
Gaisné, G.
Pepe, F.
Santos, N. C.
Ségransan, D.
Udry, S.
Goeke, R. F.
Levine, A. M.
Quintana, E. V.
Guerrero, N. M.
Mireles, I.
Caldwell, D. A.
Tenenbaum, P.
Brasseur, C. E.
Ricker, G.
Vanderspek, R.
Latham, D. W.
Seager, S.
Winn, J.
Jenkins, J. M.
author Murgas, F.
author_facet Murgas, F.
Astudillo Defru, Nicola
Bonfils, X.
Crossfield, I.
Almenara, J. M.
Livingston, John
Stassun, Keivan G.
Korth, Judith
Orell Miquel, Jaume
Morello, G.
Eastman, J. D.
Lissauer, J. J.
Kane, S. R.
Morales, F. Y.
Werner, M. W.
Gorjian, V.
Benneke, B.
Dragomir, D.
Matthews, E. C.
Howell, S. B.
Ciardi, D.
Gonzales, E.
Matson, R.
Beichman, C.
Schlieder, J.
Collins, K. A.
Collins, K. I.
Jensen, E. L. N.
Evans, P.
Pozuelos, F. J.
Gillon, M.
Jehin, E.
Barkaoui, K.
Artigau, E.
Bouchy, F.
Charbonneau, D.
Delfosse, X.
Díaz, Rodrigo Fernando
Doyon, R.
Figueira, P.
Forveille, T.
Lovis, C.
Melo, C.
Gaisné, G.
Pepe, F.
Santos, N. C.
Ségransan, D.
Udry, S.
Goeke, R. F.
Levine, A. M.
Quintana, E. V.
Guerrero, N. M.
Mireles, I.
Caldwell, D. A.
Tenenbaum, P.
Brasseur, C. E.
Ricker, G.
Vanderspek, R.
Latham, D. W.
Seager, S.
Winn, J.
Jenkins, J. M.
author_role author
author2 Astudillo Defru, Nicola
Bonfils, X.
Crossfield, I.
Almenara, J. M.
Livingston, John
Stassun, Keivan G.
Korth, Judith
Orell Miquel, Jaume
Morello, G.
Eastman, J. D.
Lissauer, J. J.
Kane, S. R.
Morales, F. Y.
Werner, M. W.
Gorjian, V.
Benneke, B.
Dragomir, D.
Matthews, E. C.
Howell, S. B.
Ciardi, D.
Gonzales, E.
Matson, R.
Beichman, C.
Schlieder, J.
Collins, K. A.
Collins, K. I.
Jensen, E. L. N.
Evans, P.
Pozuelos, F. J.
Gillon, M.
Jehin, E.
Barkaoui, K.
Artigau, E.
Bouchy, F.
Charbonneau, D.
Delfosse, X.
Díaz, Rodrigo Fernando
Doyon, R.
Figueira, P.
Forveille, T.
Lovis, C.
Melo, C.
Gaisné, G.
Pepe, F.
Santos, N. C.
Ségransan, D.
Udry, S.
Goeke, R. F.
Levine, A. M.
Quintana, E. V.
Guerrero, N. M.
Mireles, I.
Caldwell, D. A.
Tenenbaum, P.
Brasseur, C. E.
Ricker, G.
Vanderspek, R.
Latham, D. W.
Seager, S.
Winn, J.
Jenkins, J. M.
author2_role author
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author
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author
author
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author
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author
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dc.subject.none.fl_str_mv PLANETS AND SATELLITES: GASEOUS PLANETS
PLANETS AND SATELLITES: GENERAL
STARS: INDIVIDUAL: TOI-674
TECHNIQUES: PHOTOMETRIC
TECHNIQUES: RADIAL VELOCITIES
PLANETARY SYSTEMS
topic PLANETS AND SATELLITES: GASEOUS PLANETS
PLANETS AND SATELLITES: GENERAL
STARS: INDIVIDUAL: TOI-674
TECHNIQUES: PHOTOMETRIC
TECHNIQUES: RADIAL VELOCITIES
PLANETARY SYSTEMS
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv 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.
Fil: Murgas, F.. Universidad de La Laguna; España. Instituto Astrofísico de Canarias; España
Fil: Astudillo Defru, Nicola. Universidad Católica de la Santísima Concepción; Chile
Fil: Bonfils, X.. Universite Grenoble Alpes; Francia
Fil: Crossfield, I.. University of Kansas; Estados Unidos
Fil: Almenara, J. M.. Universite Grenoble Alpes; Francia
Fil: Livingston, John. University of Tokyo; Japón
Fil: Stassun, Keivan G.. Vanderbilt University; Estados Unidos
Fil: Korth, Judith. Chalmers University of Technology; Suecia
Fil: Orell Miquel, Jaume. Universidad de La Laguna; España. Instituto Astrofisico de Canarias; España
Fil: Morello, G.. Universidad de La Laguna; España. Instituto Astrofísico de Canarias; España
Fil: Eastman, J. D.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos
Fil: Lissauer, J. J.. Nasa Ames Research Center; Estados Unidos
Fil: Kane, S. R.. University of California; Estados Unidos
Fil: Morales, F. Y.. Jet Propulsion Laboratory; Estados Unidos
Fil: Werner, M. W.. Universidad Católica de la Santísima Concepción; Chile
Fil: Gorjian, V.. Universidad Católica de la Santísima Concepción; Chile
Fil: Benneke, B.. Institut de Recherche Sur Les Exoplanètes; Canadá
Fil: Dragomir, D.. University of New Mexico; Estados Unidos
Fil: Matthews, E. C.. Universidad de Ginebra; Suiza
Fil: Howell, S. B.. Nasa Ames Research Center; Estados Unidos
Fil: Ciardi, D.. California Institute of Technology; Estados Unidos
Fil: Gonzales, E.. University of California at Santa Cruz; Estados Unidos
Fil: Matson, R.. US Naval Observatory; Estados Unidos
Fil: Beichman, C.. California Institute of Technology; Estados Unidos
Fil: Schlieder, J.. Nasa Goddard Space Flight Center; Estados Unidos
Fil: Collins, K. A.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos
Fil: Collins, K. I.. George Mason University; Estados Unidos
Fil: Jensen, E. L. N.. Swarthmore College; Estados Unidos
Fil: Evans, P.. Observatorio El Sauce; Chile
Fil: Pozuelos, F. J.. Université de Liège; Bélgica
Fil: Gillon, M.. Université de Liège; Bélgica
Fil: Jehin, E.. Université de Liège; Bélgica
Fil: Barkaoui, K.. Université de Liège; Bélgica. Université Cadi Ayyad; Marruecos
Fil: Artigau, E.. University of Montreal; Canadá
Fil: Bouchy, F.. Universidad de Ginebra; Suiza
Fil: Charbonneau, D.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos
Fil: Delfosse, X.. Universite Grenoble Alpes; Francia
Fil: Díaz, Rodrigo Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Doyon, R.. Institut de Recherche Sur Les Exoplanètes; Canadá
Fil: Figueira, P.. European Southern Observatory Santiago; Chile. Universidad de Porto; Portugal
Fil: Forveille, T.. Universite Grenoble Alpes; Francia
Fil: Lovis, C.. Universidad de Ginebra; Suiza
Fil: Melo, C.. European Southern Observatory Santiago; Chile
Fil: Gaisné, G.. Universite Grenoble Alpes; Francia
Fil: Pepe, F.. Universidad de Ginebra; Suiza
Fil: Santos, N. C.. Universidad de Porto; Portugal
Fil: Ségransan, D.. Universidad de Ginebra; Suiza
Fil: Udry, S.. Universidad de Ginebra; Suiza
Fil: Goeke, R. F.. Massachusetts Institute of Technology; Estados Unidos
Fil: Levine, A. M.. Mit Kavli Institute for Astrophysics and Space Research; Estados Unidos
Fil: Quintana, E. V.. Nasa Goddard Space Flight Center; Estados Unidos
Fil: Guerrero, N. M.. Mit Kavli Institute For Astrophysics And Space Research; Estados Unidos
Fil: Mireles, I.. Mit Kavli Institute for Astrophysics and Space Research; Estados Unidos
Fil: Caldwell, D. A.. Seti Institute; Estados Unidos. Nasa Ames Research Center; Estados Unidos
Fil: Tenenbaum, P.. Seti Institute; Estados Unidos. Nasa Ames Research Center; Estados Unidos
Fil: Brasseur, C. E.. Space Telescope Science Institute; Estados Unidos
Fil: Ricker, G.. Mit Kavli Institute for Astrophysics and Space Research; Estados Unidos
Fil: Vanderspek, R.. Mit Kavli Institute for Astrophysics and Space Research; Estados Unidos
Fil: Latham, D. W.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos
Fil: Seager, S.. Mit Kavli Institute for Astrophysics and Space Research; Estados Unidos. Massachusetts Institute of Technology; Estados Unidos
Fil: Winn, J.. University of Princeton; Estados Unidos
Fil: Jenkins, J. M.. Nasa Ames Research Center; Estados Unidos
description 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.
publishDate 2021
dc.date.none.fl_str_mv 2021-09
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/154607
Murgas, F.; Astudillo Defru, Nicola; Bonfils, X.; Crossfield, I.; Almenara, J. M.; et al.; TOI-674b: An oasis in the desert of exo-Neptunes transiting a nearby M dwarf; EDP Sciences; Astronomy and Astrophysics; 653; 9-2021; 1-22
0004-6361
CONICET Digital
CONICET
url http://hdl.handle.net/11336/154607
identifier_str_mv Murgas, F.; Astudillo Defru, Nicola; Bonfils, X.; Crossfield, I.; Almenara, J. M.; et al.; TOI-674b: An oasis in the desert of exo-Neptunes transiting a nearby M dwarf; EDP Sciences; Astronomy and Astrophysics; 653; 9-2021; 1-22
0004-6361
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/202140718
info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/full_html/2021/09/aa40718-21/aa40718-21.html
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv EDP Sciences
publisher.none.fl_str_mv EDP Sciences
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1842980124722462720
score 12.993085

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