A search for transit timing variations and orbital decay in WASP-46b
- Autores
- Petrucci, Romina Paola; Jofre, Jorge Emiliano; Ferrero, Leticia Virginia; Cuneo, Virginia; Saker, Leila Yamila; Lovos, Flavia Virginia; Gomez, Mercedes Nieves; Mauas, Pablo Jacobo David
- Año de publicación
- 2018
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We present 12 new transit observations of the exoplanet WASP-46b obtained with the 1.54-m telescope at Estación Astrofı́sica de Bosque Alegre (EABA, Argentina) and the 0.40-m Horacio Ghielmetti and 2.15-m Jorge Sahade telescopes at Complejo Astronómico El Leoncito (CASLEO, Argentina). We analyse them together with 37 light curves from the literature to re-determine the physical parameters and search for additional planets via transit timing variations (TTVs). We consider the 31 transits with uncertainties in their mid-transit times (e_T0) < 1 min, to perform the first homogeneous study of TTVs for the system, finding a dispersion of σ = 1.66 min over a 6 yr baseline. Since no periodic variations are found, ourinterpretation for this relatively high value of σ is that the stellar activity could be affecting the measured mid-transit times. This value of dispersion allows us to rule out the presence of additional bodies with masses larger than 2.3, 4.6, 7 and 9.3 M⊕ at the first-order mean-motion resonances 2:1, 3:2, 4:3 and 5:4 with the transiting planet, respectively. Despite the 6 yr baseline and a typical light-curve precision of 2 × 10^(−3), we find that we cannot significantly demonstrate a slow decrease of the orbital period of WASP-46b. We place a lower limit ofQ* > 7 × 10^(3) on the tidal quality factor and determine that an additional 6 yr baseline is required to rule out Q* < 10^(5).
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. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Ferrero, Leticia Virginia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; Argentina
Fil: Cuneo, Virginia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; Argentina
Fil: Saker, Leila Yamila. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Lovos, Flavia Virginia. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
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
Fil: Mauas, Pablo Jacobo David. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina - Materia
-
TECHNIQUES: PHOTOMETRIC
PLANETS AND SATELLITES:INDIVIDUAL: WASP-46b
STARS:INDIVIDUAL:WASP-46 - 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:11336/88162
Ver los metadatos del registro completo
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A search for transit timing variations and orbital decay in WASP-46bPetrucci, Romina PaolaJofre, Jorge EmilianoFerrero, Leticia VirginiaCuneo, VirginiaSaker, Leila YamilaLovos, Flavia VirginiaGomez, Mercedes NievesMauas, Pablo Jacobo DavidTECHNIQUES: PHOTOMETRICPLANETS AND SATELLITES:INDIVIDUAL: WASP-46bSTARS:INDIVIDUAL:WASP-46https://purl.org/becyt/ford/1.7https://purl.org/becyt/ford/1We present 12 new transit observations of the exoplanet WASP-46b obtained with the 1.54-m telescope at Estación Astrofı́sica de Bosque Alegre (EABA, Argentina) and the 0.40-m Horacio Ghielmetti and 2.15-m Jorge Sahade telescopes at Complejo Astronómico El Leoncito (CASLEO, Argentina). We analyse them together with 37 light curves from the literature to re-determine the physical parameters and search for additional planets via transit timing variations (TTVs). We consider the 31 transits with uncertainties in their mid-transit times (e_T0) < 1 min, to perform the first homogeneous study of TTVs for the system, finding a dispersion of σ = 1.66 min over a 6 yr baseline. Since no periodic variations are found, ourinterpretation for this relatively high value of σ is that the stellar activity could be affecting the measured mid-transit times. This value of dispersion allows us to rule out the presence of additional bodies with masses larger than 2.3, 4.6, 7 and 9.3 M⊕ at the first-order mean-motion resonances 2:1, 3:2, 4:3 and 5:4 with the transiting planet, respectively. Despite the 6 yr baseline and a typical light-curve precision of 2 × 10^(−3), we find that we cannot significantly demonstrate a slow decrease of the orbital period of WASP-46b. We place a lower limit ofQ* > 7 × 10^(3) on the tidal quality factor and determine that an additional 6 yr baseline is required to rule out Q* < 10^(5).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. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Ferrero, Leticia Virginia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; ArgentinaFil: Cuneo, Virginia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; ArgentinaFil: Saker, Leila Yamila. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Lovos, Flavia Virginia. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Gomez, Mercedes Nieves. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; ArgentinaFil: Mauas, Pablo Jacobo David. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; ArgentinaWiley Blackwell Publishing, Inc2018-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/88162Petrucci, Romina Paola; Jofre, Jorge Emiliano; Ferrero, Leticia Virginia; Cuneo, Virginia; Saker, Leila Yamila; et al.; A search for transit timing variations and orbital decay in WASP-46b; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 473; 4; 2-2018; 5126-51410035-87111365-2966CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://academic.oup.com/mnras/article/473/4/5126/4443209info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stx2647info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:10:02Zoai:ri.conicet.gov.ar:11336/88162instacron: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 11:10:03.228CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
| dc.title.none.fl_str_mv |
A search for transit timing variations and orbital decay in WASP-46b |
| title |
A search for transit timing variations and orbital decay in WASP-46b |
| spellingShingle |
A search for transit timing variations and orbital decay in WASP-46b Petrucci, Romina Paola TECHNIQUES: PHOTOMETRIC PLANETS AND SATELLITES:INDIVIDUAL: WASP-46b STARS:INDIVIDUAL:WASP-46 |
| title_short |
A search for transit timing variations and orbital decay in WASP-46b |
| title_full |
A search for transit timing variations and orbital decay in WASP-46b |
| title_fullStr |
A search for transit timing variations and orbital decay in WASP-46b |
| title_full_unstemmed |
A search for transit timing variations and orbital decay in WASP-46b |
| title_sort |
A search for transit timing variations and orbital decay in WASP-46b |
| dc.creator.none.fl_str_mv |
Petrucci, Romina Paola Jofre, Jorge Emiliano Ferrero, Leticia Virginia Cuneo, Virginia Saker, Leila Yamila Lovos, Flavia Virginia Gomez, Mercedes Nieves Mauas, Pablo Jacobo David |
| author |
Petrucci, Romina Paola |
| author_facet |
Petrucci, Romina Paola Jofre, Jorge Emiliano Ferrero, Leticia Virginia Cuneo, Virginia Saker, Leila Yamila Lovos, Flavia Virginia Gomez, Mercedes Nieves Mauas, Pablo Jacobo David |
| author_role |
author |
| author2 |
Jofre, Jorge Emiliano Ferrero, Leticia Virginia Cuneo, Virginia Saker, Leila Yamila Lovos, Flavia Virginia Gomez, Mercedes Nieves Mauas, Pablo Jacobo David |
| author2_role |
author author author author author author author |
| dc.subject.none.fl_str_mv |
TECHNIQUES: PHOTOMETRIC PLANETS AND SATELLITES:INDIVIDUAL: WASP-46b STARS:INDIVIDUAL:WASP-46 |
| topic |
TECHNIQUES: PHOTOMETRIC PLANETS AND SATELLITES:INDIVIDUAL: WASP-46b STARS:INDIVIDUAL:WASP-46 |
| 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 12 new transit observations of the exoplanet WASP-46b obtained with the 1.54-m telescope at Estación Astrofı́sica de Bosque Alegre (EABA, Argentina) and the 0.40-m Horacio Ghielmetti and 2.15-m Jorge Sahade telescopes at Complejo Astronómico El Leoncito (CASLEO, Argentina). We analyse them together with 37 light curves from the literature to re-determine the physical parameters and search for additional planets via transit timing variations (TTVs). We consider the 31 transits with uncertainties in their mid-transit times (e_T0) < 1 min, to perform the first homogeneous study of TTVs for the system, finding a dispersion of σ = 1.66 min over a 6 yr baseline. Since no periodic variations are found, ourinterpretation for this relatively high value of σ is that the stellar activity could be affecting the measured mid-transit times. This value of dispersion allows us to rule out the presence of additional bodies with masses larger than 2.3, 4.6, 7 and 9.3 M⊕ at the first-order mean-motion resonances 2:1, 3:2, 4:3 and 5:4 with the transiting planet, respectively. Despite the 6 yr baseline and a typical light-curve precision of 2 × 10^(−3), we find that we cannot significantly demonstrate a slow decrease of the orbital period of WASP-46b. We place a lower limit ofQ* > 7 × 10^(3) on the tidal quality factor and determine that an additional 6 yr baseline is required to rule out Q* < 10^(5). 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. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Ferrero, Leticia Virginia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; Argentina Fil: Cuneo, Virginia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; Argentina Fil: Saker, Leila Yamila. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Lovos, Flavia Virginia. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina 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 Fil: Mauas, Pablo Jacobo David. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina |
| description |
We present 12 new transit observations of the exoplanet WASP-46b obtained with the 1.54-m telescope at Estación Astrofı́sica de Bosque Alegre (EABA, Argentina) and the 0.40-m Horacio Ghielmetti and 2.15-m Jorge Sahade telescopes at Complejo Astronómico El Leoncito (CASLEO, Argentina). We analyse them together with 37 light curves from the literature to re-determine the physical parameters and search for additional planets via transit timing variations (TTVs). We consider the 31 transits with uncertainties in their mid-transit times (e_T0) < 1 min, to perform the first homogeneous study of TTVs for the system, finding a dispersion of σ = 1.66 min over a 6 yr baseline. Since no periodic variations are found, ourinterpretation for this relatively high value of σ is that the stellar activity could be affecting the measured mid-transit times. This value of dispersion allows us to rule out the presence of additional bodies with masses larger than 2.3, 4.6, 7 and 9.3 M⊕ at the first-order mean-motion resonances 2:1, 3:2, 4:3 and 5:4 with the transiting planet, respectively. Despite the 6 yr baseline and a typical light-curve precision of 2 × 10^(−3), we find that we cannot significantly demonstrate a slow decrease of the orbital period of WASP-46b. We place a lower limit ofQ* > 7 × 10^(3) on the tidal quality factor and determine that an additional 6 yr baseline is required to rule out Q* < 10^(5). |
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2018 |
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2018-02 |
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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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http://hdl.handle.net/11336/88162 Petrucci, Romina Paola; Jofre, Jorge Emiliano; Ferrero, Leticia Virginia; Cuneo, Virginia; Saker, Leila Yamila; et al.; A search for transit timing variations and orbital decay in WASP-46b; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 473; 4; 2-2018; 5126-5141 0035-8711 1365-2966 CONICET Digital CONICET |
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http://hdl.handle.net/11336/88162 |
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Petrucci, Romina Paola; Jofre, Jorge Emiliano; Ferrero, Leticia Virginia; Cuneo, Virginia; Saker, Leila Yamila; et al.; A search for transit timing variations and orbital decay in WASP-46b; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 473; 4; 2-2018; 5126-5141 0035-8711 1365-2966 CONICET Digital CONICET |
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eng |
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