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
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/88162
Acceder
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network_name_str CONICET Digital (CONICET)
spelling 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).
publishDate 2018
dc.date.none.fl_str_mv 2018-02
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/11336/88162
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
url http://hdl.handle.net/11336/88162
identifier_str_mv 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
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://academic.oup.com/mnras/article/473/4/5126/4443209
info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stx2647
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
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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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