Transit timing variation analysis in southern stars: The case of WASP-28

We present four new transit observations of the exoplanet WASP-28b observed between 2011 August and 2013 October. Employing another 11 transits available in the literature we compute new ephemeris and redetermine the physical parameters of the star and the exoplanet. Considering 3 yr of observations...

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Guardado en:
Detalles Bibliográficos
Publicado: 2014
Materias:
Planetary systems
Stars: individual: WASP-28
Techniques: photometric
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00358711_v446_n2_p1389_Petrucci
http://hdl.handle.net/20.500.12110/paper_00358711_v446_n2_p1389_Petrucci
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00358711_v446_n2_p1389_Petrucci
record_format dspace
spelling paper:paper_00358711_v446_n2_p1389_Petrucci2023-06-08T15:01:39Z Transit timing variation analysis in southern stars: The case of WASP-28 Planetary systems Stars: individual: WASP-28 Techniques: photometric We present four new transit observations of the exoplanet WASP-28b observed between 2011 August and 2013 October. Employing another 11 transits available in the literature we compute new ephemeris and redetermine the physical parameters of the star and the exoplanet. Considering 3 yr of observations, we find no periodic transit timing variations (TTVs) or longterm variations of the inclination of the orbit, i, or the depth of the transit, k, that could be attributable to the presence of another planetary-mass body in the system. We also study the relations between i and k with different factors that characterize the light curves. The fits suggest a possible weak correlation between k with the red noise factor, β, and the photometric noise rate, PNR, and a weak anticorrelation between i and PNR, although more points are needed to confirm these trends. Finally, the kinematic study suggests that WASP-28 is a thin-disc star. © 2014 The Authors. 2014 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00358711_v446_n2_p1389_Petrucci http://hdl.handle.net/20.500.12110/paper_00358711_v446_n2_p1389_Petrucci
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Planetary systems
Stars: individual: WASP-28
Techniques: photometric
spellingShingle Planetary systems
Stars: individual: WASP-28
Techniques: photometric
Transit timing variation analysis in southern stars: The case of WASP-28
topic_facet Planetary systems
Stars: individual: WASP-28
Techniques: photometric
description We present four new transit observations of the exoplanet WASP-28b observed between 2011 August and 2013 October. Employing another 11 transits available in the literature we compute new ephemeris and redetermine the physical parameters of the star and the exoplanet. Considering 3 yr of observations, we find no periodic transit timing variations (TTVs) or longterm variations of the inclination of the orbit, i, or the depth of the transit, k, that could be attributable to the presence of another planetary-mass body in the system. We also study the relations between i and k with different factors that characterize the light curves. The fits suggest a possible weak correlation between k with the red noise factor, β, and the photometric noise rate, PNR, and a weak anticorrelation between i and PNR, although more points are needed to confirm these trends. Finally, the kinematic study suggests that WASP-28 is a thin-disc star. © 2014 The Authors.
title Transit timing variation analysis in southern stars: The case of WASP-28
title_short Transit timing variation analysis in southern stars: The case of WASP-28
title_full Transit timing variation analysis in southern stars: The case of WASP-28
title_fullStr Transit timing variation analysis in southern stars: The case of WASP-28
title_full_unstemmed Transit timing variation analysis in southern stars: The case of WASP-28
title_sort transit timing variation analysis in southern stars: the case of wasp-28
publishDate 2014
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00358711_v446_n2_p1389_Petrucci
http://hdl.handle.net/20.500.12110/paper_00358711_v446_n2_p1389_Petrucci
_version_ 1768544947606126592

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