Indications for transit timing variations in the exo-Neptune HAT-P-26b

Autores
von Essen, C.; Wedemeyer, S.; Sosa, Marina Soledad; Hjorth, M.; Parkash, V.; Freudenthal, J.; Mallonn, M.; Miculán, Romina Gisele; Zibecchi, Lorena Cecilia; Cellone, Sergio Aldo; Torres, Andrea Fabiana
Año de publicación
2019
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
From its discovery, the low density transiting Neptune HAT-P-26b showed a 2.1σ detection drift in its spectroscopic data, whilephotometric data showed a weak curvature in the timing residuals that required further follow-up observations to be confirmed. Toinvestigate this suspected variability, we observed 11 primary transits of HAT-P-26b between March, 2015 and July, 2018. For this,we used the 2.15 meter Jorge Sahade Telescope placed in San Juan, Argentina, and the 1.2 meter STELLA and the 2.5 meter NordicOptical Telescope, both located in the Canary Islands, Spain. To add upon valuable information on the transmission spectrum ofHAT-P-26b, we focused our observations in the R-band only. To contrast the observed timing variability with possible stellar activity,we carried out a photometric follow-up of the host star along three years. We carried out a global fit to the data and determinedthe individual mid-transit times focusing specifically on the light curves that showed complete transit coverage. Using bibliographicdata corresponding to both ground and space-based facilities, plus our new characterized mid-transit times derived from parts-perthousand precise photometry, we observed indications of transit timing variations in the system, with an amplitude of ∼4 minutes anda periodicity of ∼270 epochs. The photometric and spectroscopic follow-up observations of this system will be continued in order torule out any aliasing effects caused by poor sampling and the long-term periodicity.
Fil: von Essen, C.. University Aarhus. Institut for Fysik Og Astronomi; Dinamarca. Vilnius University; Lituania
Fil: Wedemeyer, S.. University of Oslo; Noruega
Fil: Sosa, Marina Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Fil: Hjorth, M.. University Aarhus. Institut for Fysik Og Astronomi; Dinamarca
Fil: Parkash, V.. Monash University; Australia
Fil: Freudenthal, J.. Universität Göttingen; Alemania
Fil: Mallonn, M.. German Research Centre for Geosciences; Alemania
Fil: Miculán, Romina Gisele. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Fil: Zibecchi, Lorena Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Fil: Cellone, Sergio Aldo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Torres, Andrea Fabiana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Materia
STARS: PLANETARY SYSTEMS
TARS: INDIVIDUAL: HAT-P-26
METHODS: OBSERVATIONAL
EXOPLANETS
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:11336/125246
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Indications for transit timing variations in the exo-Neptune HAT-P-26bvon Essen, C.Wedemeyer, S.Sosa, Marina SoledadHjorth, M.Parkash, V.Freudenthal, J.Mallonn, M.Miculán, Romina GiseleZibecchi, Lorena CeciliaCellone, Sergio AldoTorres, Andrea FabianaSTARS: PLANETARY SYSTEMSTARS: INDIVIDUAL: HAT-P-26METHODS: OBSERVATIONALEXOPLANETShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1From its discovery, the low density transiting Neptune HAT-P-26b showed a 2.1σ detection drift in its spectroscopic data, whilephotometric data showed a weak curvature in the timing residuals that required further follow-up observations to be confirmed. Toinvestigate this suspected variability, we observed 11 primary transits of HAT-P-26b between March, 2015 and July, 2018. For this,we used the 2.15 meter Jorge Sahade Telescope placed in San Juan, Argentina, and the 1.2 meter STELLA and the 2.5 meter NordicOptical Telescope, both located in the Canary Islands, Spain. To add upon valuable information on the transmission spectrum ofHAT-P-26b, we focused our observations in the R-band only. To contrast the observed timing variability with possible stellar activity,we carried out a photometric follow-up of the host star along three years. We carried out a global fit to the data and determinedthe individual mid-transit times focusing specifically on the light curves that showed complete transit coverage. Using bibliographicdata corresponding to both ground and space-based facilities, plus our new characterized mid-transit times derived from parts-perthousand precise photometry, we observed indications of transit timing variations in the system, with an amplitude of ∼4 minutes anda periodicity of ∼270 epochs. The photometric and spectroscopic follow-up observations of this system will be continued in order torule out any aliasing effects caused by poor sampling and the long-term periodicity.Fil: von Essen, C.. University Aarhus. Institut for Fysik Og Astronomi; Dinamarca. Vilnius University; LituaniaFil: Wedemeyer, S.. University of Oslo; NoruegaFil: Sosa, Marina Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; ArgentinaFil: Hjorth, M.. University Aarhus. Institut for Fysik Og Astronomi; DinamarcaFil: Parkash, V.. Monash University; AustraliaFil: Freudenthal, J.. Universität Göttingen; AlemaniaFil: Mallonn, M.. German Research Centre for Geosciences; AlemaniaFil: Miculán, Romina Gisele. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; ArgentinaFil: Zibecchi, Lorena Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; ArgentinaFil: Cellone, Sergio Aldo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; ArgentinaFil: Torres, Andrea Fabiana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; ArgentinaEDP Sciences2019-08-14info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/125246von Essen, C.; Wedemeyer, S.; Sosa, Marina Soledad; Hjorth, M.; Parkash, V.; et al.; Indications for transit timing variations in the exo-Neptune HAT-P-26b; EDP Sciences; Astronomy and Astrophysics; 628; A116; 14-8-2019; 116-1240004-6361CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/ 10.1051/0004-6361/201731966info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/full_html/2019/08/aa31966-17/aa31966-17.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 Técnicas2025-09-29T09:35:01Zoai:ri.conicet.gov.ar:11336/125246instacron: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:34982025-09-29 09:35:02.14CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Indications for transit timing variations in the exo-Neptune HAT-P-26b
title Indications for transit timing variations in the exo-Neptune HAT-P-26b
spellingShingle Indications for transit timing variations in the exo-Neptune HAT-P-26b
von Essen, C.
STARS: PLANETARY SYSTEMS
TARS: INDIVIDUAL: HAT-P-26
METHODS: OBSERVATIONAL
EXOPLANETS
title_short Indications for transit timing variations in the exo-Neptune HAT-P-26b
title_full Indications for transit timing variations in the exo-Neptune HAT-P-26b
title_fullStr Indications for transit timing variations in the exo-Neptune HAT-P-26b
title_full_unstemmed Indications for transit timing variations in the exo-Neptune HAT-P-26b
title_sort Indications for transit timing variations in the exo-Neptune HAT-P-26b
dc.creator.none.fl_str_mv von Essen, C.
Wedemeyer, S.
Sosa, Marina Soledad
Hjorth, M.
Parkash, V.
Freudenthal, J.
Mallonn, M.
Miculán, Romina Gisele
Zibecchi, Lorena Cecilia
Cellone, Sergio Aldo
Torres, Andrea Fabiana
author von Essen, C.
author_facet von Essen, C.
Wedemeyer, S.
Sosa, Marina Soledad
Hjorth, M.
Parkash, V.
Freudenthal, J.
Mallonn, M.
Miculán, Romina Gisele
Zibecchi, Lorena Cecilia
Cellone, Sergio Aldo
Torres, Andrea Fabiana
author_role author
author2 Wedemeyer, S.
Sosa, Marina Soledad
Hjorth, M.
Parkash, V.
Freudenthal, J.
Mallonn, M.
Miculán, Romina Gisele
Zibecchi, Lorena Cecilia
Cellone, Sergio Aldo
Torres, Andrea Fabiana
author2_role author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv STARS: PLANETARY SYSTEMS
TARS: INDIVIDUAL: HAT-P-26
METHODS: OBSERVATIONAL
EXOPLANETS
topic STARS: PLANETARY SYSTEMS
TARS: INDIVIDUAL: HAT-P-26
METHODS: OBSERVATIONAL
EXOPLANETS
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv From its discovery, the low density transiting Neptune HAT-P-26b showed a 2.1σ detection drift in its spectroscopic data, whilephotometric data showed a weak curvature in the timing residuals that required further follow-up observations to be confirmed. Toinvestigate this suspected variability, we observed 11 primary transits of HAT-P-26b between March, 2015 and July, 2018. For this,we used the 2.15 meter Jorge Sahade Telescope placed in San Juan, Argentina, and the 1.2 meter STELLA and the 2.5 meter NordicOptical Telescope, both located in the Canary Islands, Spain. To add upon valuable information on the transmission spectrum ofHAT-P-26b, we focused our observations in the R-band only. To contrast the observed timing variability with possible stellar activity,we carried out a photometric follow-up of the host star along three years. We carried out a global fit to the data and determinedthe individual mid-transit times focusing specifically on the light curves that showed complete transit coverage. Using bibliographicdata corresponding to both ground and space-based facilities, plus our new characterized mid-transit times derived from parts-perthousand precise photometry, we observed indications of transit timing variations in the system, with an amplitude of ∼4 minutes anda periodicity of ∼270 epochs. The photometric and spectroscopic follow-up observations of this system will be continued in order torule out any aliasing effects caused by poor sampling and the long-term periodicity.
Fil: von Essen, C.. University Aarhus. Institut for Fysik Og Astronomi; Dinamarca. Vilnius University; Lituania
Fil: Wedemeyer, S.. University of Oslo; Noruega
Fil: Sosa, Marina Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Fil: Hjorth, M.. University Aarhus. Institut for Fysik Og Astronomi; Dinamarca
Fil: Parkash, V.. Monash University; Australia
Fil: Freudenthal, J.. Universität Göttingen; Alemania
Fil: Mallonn, M.. German Research Centre for Geosciences; Alemania
Fil: Miculán, Romina Gisele. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Fil: Zibecchi, Lorena Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Fil: Cellone, Sergio Aldo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Torres, Andrea Fabiana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
description From its discovery, the low density transiting Neptune HAT-P-26b showed a 2.1σ detection drift in its spectroscopic data, whilephotometric data showed a weak curvature in the timing residuals that required further follow-up observations to be confirmed. Toinvestigate this suspected variability, we observed 11 primary transits of HAT-P-26b between March, 2015 and July, 2018. For this,we used the 2.15 meter Jorge Sahade Telescope placed in San Juan, Argentina, and the 1.2 meter STELLA and the 2.5 meter NordicOptical Telescope, both located in the Canary Islands, Spain. To add upon valuable information on the transmission spectrum ofHAT-P-26b, we focused our observations in the R-band only. To contrast the observed timing variability with possible stellar activity,we carried out a photometric follow-up of the host star along three years. We carried out a global fit to the data and determinedthe individual mid-transit times focusing specifically on the light curves that showed complete transit coverage. Using bibliographicdata corresponding to both ground and space-based facilities, plus our new characterized mid-transit times derived from parts-perthousand precise photometry, we observed indications of transit timing variations in the system, with an amplitude of ∼4 minutes anda periodicity of ∼270 epochs. The photometric and spectroscopic follow-up observations of this system will be continued in order torule out any aliasing effects caused by poor sampling and the long-term periodicity.
publishDate 2019
dc.date.none.fl_str_mv 2019-08-14
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/11336/125246
von Essen, C.; Wedemeyer, S.; Sosa, Marina Soledad; Hjorth, M.; Parkash, V.; et al.; Indications for transit timing variations in the exo-Neptune HAT-P-26b; EDP Sciences; Astronomy and Astrophysics; 628; A116; 14-8-2019; 116-124
0004-6361
CONICET Digital
CONICET
url http://hdl.handle.net/11336/125246
identifier_str_mv von Essen, C.; Wedemeyer, S.; Sosa, Marina Soledad; Hjorth, M.; Parkash, V.; et al.; Indications for transit timing variations in the exo-Neptune HAT-P-26b; EDP Sciences; Astronomy and Astrophysics; 628; A116; 14-8-2019; 116-124
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/ 10.1051/0004-6361/201731966
info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/full_html/2019/08/aa31966-17/aa31966-17.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
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score 13.070432

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