Discarding orbital decay in WASP-19b after one decade of transit observations

Autores
Petrucci, Romina Paola; Jofre, Jorge Emiliano; Gómez Maqueo Chew, Y.; Hinse, T. C.; Mazek, M.; Tan, T. -G.; Gomez, Mercedes Nieves
Año de publicación
2019
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present an empirical study of orbital decay for the exoplanet WASP-19b, based on mid-time measurements of 74 complete transits (12 newly obtained by our team and 62 from the literature), covering a 10-yr baseline. A linear ephemeris best represents the mid-transit times as a function of epoch. Thus, we detect no evidence of the shortening of WASP-19b's orbital period and establish an upper limit of its steady changing rate, P' = −2.294 ms yr−1, and a lower limit for the modified tidal quality factor Q'* = (1.23 ± 0.231) × 106. Both are in agreement with previous works. This is the first estimation of Q' directly derived from the mid-times of WASP-19b obtained through homogeneously analysed transit measurements. Additionally, we do not detect periodic variations in the transit timings within the measured uncertainties in the mid-times of transit. We are therefore able to discard the existence of planetary companions in the system down to a few M in the first-order mean-motion resonances 1:2 and 2:1 with WASP-19b, in the most conservative case of circular orbits. Finally, we measure the empirical Q'* values of 15 exoplanet host stars, which suggest that stars with Teff ≲ 5600 K dissipate tidal energy more efficiently than hotter stars. This tentative trend needs to be confirmed with a larger sample of empirically measured Q'*.
Fil: Petrucci, Romina Paola. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; Argentina
Fil: Jofre, Jorge Emiliano. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; Argentina. Universidad Nacional Autónoma de México; México. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Gómez Maqueo Chew, Y.. Universidad Nacional Autónoma de México; México
Fil: Hinse, T. C.. Chungnam National University; Corea del Sur
Fil: Mazek, M.. Institute Of Physics Czech Academy Of Sciences; República Checa
Fil: Tan, T. -G.. Perth Exoplanet Survey Telescope; Australia
Fil: Gomez, Mercedes Nieves. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; Argentina
Materia
PLANETARY SYSTEMS
PLANETS AND SATELLITES: INDIVIDUAL: WASP-19B
STARS: INDIVIDUAL: WASP-19
TECHNIQUES: PHOTOMETRIC
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:11336/129263
Acceder
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network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling Discarding orbital decay in WASP-19b after one decade of transit observationsPetrucci, Romina PaolaJofre, Jorge EmilianoGómez Maqueo Chew, Y.Hinse, T. C.Mazek, M.Tan, T. -G.Gomez, Mercedes NievesPLANETARY SYSTEMSPLANETS AND SATELLITES: INDIVIDUAL: WASP-19BSTARS: INDIVIDUAL: WASP-19TECHNIQUES: PHOTOMETRIChttps://purl.org/becyt/ford/1.7https://purl.org/becyt/ford/1We present an empirical study of orbital decay for the exoplanet WASP-19b, based on mid-time measurements of 74 complete transits (12 newly obtained by our team and 62 from the literature), covering a 10-yr baseline. A linear ephemeris best represents the mid-transit times as a function of epoch. Thus, we detect no evidence of the shortening of WASP-19b's orbital period and establish an upper limit of its steady changing rate, P' = −2.294 ms yr−1, and a lower limit for the modified tidal quality factor Q'* = (1.23 ± 0.231) × 106. Both are in agreement with previous works. This is the first estimation of Q' directly derived from the mid-times of WASP-19b obtained through homogeneously analysed transit measurements. Additionally, we do not detect periodic variations in the transit timings within the measured uncertainties in the mid-times of transit. We are therefore able to discard the existence of planetary companions in the system down to a few M in the first-order mean-motion resonances 1:2 and 2:1 with WASP-19b, in the most conservative case of circular orbits. Finally, we measure the empirical Q'* values of 15 exoplanet host stars, which suggest that stars with Teff ≲ 5600 K dissipate tidal energy more efficiently than hotter stars. This tentative trend needs to be confirmed with a larger sample of empirically measured Q'*.Fil: Petrucci, Romina Paola. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; ArgentinaFil: Jofre, Jorge Emiliano. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; Argentina. Universidad Nacional Autónoma de México; México. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Gómez Maqueo Chew, Y.. Universidad Nacional Autónoma de México; MéxicoFil: Hinse, T. C.. Chungnam National University; Corea del SurFil: Mazek, M.. Institute Of Physics Czech Academy Of Sciences; República ChecaFil: Tan, T. -G.. Perth Exoplanet Survey Telescope; AustraliaFil: Gomez, Mercedes Nieves. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; ArgentinaWiley Blackwell Publishing, Inc2019-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/129263Petrucci, Romina Paola; Jofre, Jorge Emiliano; Gómez Maqueo Chew, Y.; Hinse, T. C.; Mazek, M.; et al.; Discarding orbital decay in WASP-19b after one decade of transit observations; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 491; 1; 10-2019; 1243-12590035-87111365-2966CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article-abstract/491/1/1243/5610667info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stz3034info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:29:59Zoai:ri.conicet.gov.ar:11336/129263instacron: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:34982025-10-22 11:29:59.979CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Discarding orbital decay in WASP-19b after one decade of transit observations
title Discarding orbital decay in WASP-19b after one decade of transit observations
spellingShingle Discarding orbital decay in WASP-19b after one decade of transit observations
Petrucci, Romina Paola
PLANETARY SYSTEMS
PLANETS AND SATELLITES: INDIVIDUAL: WASP-19B
STARS: INDIVIDUAL: WASP-19
TECHNIQUES: PHOTOMETRIC
title_short Discarding orbital decay in WASP-19b after one decade of transit observations
title_full Discarding orbital decay in WASP-19b after one decade of transit observations
title_fullStr Discarding orbital decay in WASP-19b after one decade of transit observations
title_full_unstemmed Discarding orbital decay in WASP-19b after one decade of transit observations
title_sort Discarding orbital decay in WASP-19b after one decade of transit observations
dc.creator.none.fl_str_mv Petrucci, Romina Paola
Jofre, Jorge Emiliano
Gómez Maqueo Chew, Y.
Hinse, T. C.
Mazek, M.
Tan, T. -G.
Gomez, Mercedes Nieves
author Petrucci, Romina Paola
author_facet Petrucci, Romina Paola
Jofre, Jorge Emiliano
Gómez Maqueo Chew, Y.
Hinse, T. C.
Mazek, M.
Tan, T. -G.
Gomez, Mercedes Nieves
author_role author
author2 Jofre, Jorge Emiliano
Gómez Maqueo Chew, Y.
Hinse, T. C.
Mazek, M.
Tan, T. -G.
Gomez, Mercedes Nieves
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv PLANETARY SYSTEMS
PLANETS AND SATELLITES: INDIVIDUAL: WASP-19B
STARS: INDIVIDUAL: WASP-19
TECHNIQUES: PHOTOMETRIC
topic PLANETARY SYSTEMS
PLANETS AND SATELLITES: INDIVIDUAL: WASP-19B
STARS: INDIVIDUAL: WASP-19
TECHNIQUES: PHOTOMETRIC
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.7
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We present an empirical study of orbital decay for the exoplanet WASP-19b, based on mid-time measurements of 74 complete transits (12 newly obtained by our team and 62 from the literature), covering a 10-yr baseline. A linear ephemeris best represents the mid-transit times as a function of epoch. Thus, we detect no evidence of the shortening of WASP-19b's orbital period and establish an upper limit of its steady changing rate, P' = −2.294 ms yr−1, and a lower limit for the modified tidal quality factor Q'* = (1.23 ± 0.231) × 106. Both are in agreement with previous works. This is the first estimation of Q' directly derived from the mid-times of WASP-19b obtained through homogeneously analysed transit measurements. Additionally, we do not detect periodic variations in the transit timings within the measured uncertainties in the mid-times of transit. We are therefore able to discard the existence of planetary companions in the system down to a few M in the first-order mean-motion resonances 1:2 and 2:1 with WASP-19b, in the most conservative case of circular orbits. Finally, we measure the empirical Q'* values of 15 exoplanet host stars, which suggest that stars with Teff ≲ 5600 K dissipate tidal energy more efficiently than hotter stars. This tentative trend needs to be confirmed with a larger sample of empirically measured Q'*.
Fil: Petrucci, Romina Paola. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; Argentina
Fil: Jofre, Jorge Emiliano. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; Argentina. Universidad Nacional Autónoma de México; México. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Gómez Maqueo Chew, Y.. Universidad Nacional Autónoma de México; México
Fil: Hinse, T. C.. Chungnam National University; Corea del Sur
Fil: Mazek, M.. Institute Of Physics Czech Academy Of Sciences; República Checa
Fil: Tan, T. -G.. Perth Exoplanet Survey Telescope; Australia
Fil: Gomez, Mercedes Nieves. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; Argentina
description We present an empirical study of orbital decay for the exoplanet WASP-19b, based on mid-time measurements of 74 complete transits (12 newly obtained by our team and 62 from the literature), covering a 10-yr baseline. A linear ephemeris best represents the mid-transit times as a function of epoch. Thus, we detect no evidence of the shortening of WASP-19b's orbital period and establish an upper limit of its steady changing rate, P' = −2.294 ms yr−1, and a lower limit for the modified tidal quality factor Q'* = (1.23 ± 0.231) × 106. Both are in agreement with previous works. This is the first estimation of Q' directly derived from the mid-times of WASP-19b obtained through homogeneously analysed transit measurements. Additionally, we do not detect periodic variations in the transit timings within the measured uncertainties in the mid-times of transit. We are therefore able to discard the existence of planetary companions in the system down to a few M in the first-order mean-motion resonances 1:2 and 2:1 with WASP-19b, in the most conservative case of circular orbits. Finally, we measure the empirical Q'* values of 15 exoplanet host stars, which suggest that stars with Teff ≲ 5600 K dissipate tidal energy more efficiently than hotter stars. This tentative trend needs to be confirmed with a larger sample of empirically measured Q'*.
publishDate 2019
dc.date.none.fl_str_mv 2019-10
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/11336/129263
Petrucci, Romina Paola; Jofre, Jorge Emiliano; Gómez Maqueo Chew, Y.; Hinse, T. C.; Mazek, M.; et al.; Discarding orbital decay in WASP-19b after one decade of transit observations; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 491; 1; 10-2019; 1243-1259
0035-8711
1365-2966
CONICET Digital
CONICET
url http://hdl.handle.net/11336/129263
identifier_str_mv Petrucci, Romina Paola; Jofre, Jorge Emiliano; Gómez Maqueo Chew, Y.; Hinse, T. C.; Mazek, M.; et al.; Discarding orbital decay in WASP-19b after one decade of transit observations; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 491; 1; 10-2019; 1243-1259
0035-8711
1365-2966
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article-abstract/491/1/1243/5610667
info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stz3034
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 Wiley Blackwell Publishing, Inc
publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
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
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score 12.982451

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