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
.jpg)
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/129263
Ver los metadatos del registro completo
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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 |
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2019-10 |
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info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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article |
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publishedVersion |
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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 |
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eng |
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eng |
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dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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