Testing connections between exo-atmospheres and their host stars: GEMINI-N/GMOS ground-based transmission spectrum of Qatar-1b
- Autores
- von Essen, Carolina; Cellone, Sergio Aldo; Mallonn, M.; Albrecht, S.; Miculán, Romina Gisele; Müller, H. M.
- Año de publicación
- 2017
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Till date, only a handful exo-atmospheres have been well characterized, mostly by means of the transit method. Some classic examples are HD 209458b, HD 189733b, GJ-436b, and GJ-1214b. Data show exoplanet atmospheres to be diverse. However, this is based on a small number of cases. Here we focus our study on the exo-atmosphere of Qatar-1b, an exoplanet that looks much like HD 189733b regarding its host star's activity level, their surface gravity, scale height, equilibrium temperature and transit parameters. Thus, our motivation relied on carrying out a comparative study of their atmospheres, and assess if these are regulated by their environment. In this work we present one primary transit of Qatar-1b obtained during September, 2014, using the 8.1 m GEMINI North telescope. The observations were performed using the GMOS-N instrument in multi-object spectroscopic mode. We collected fluxes of Qatar-1 and six more reference stars, covering the wavelength range between 460 and 746 nm. The achieved photometric precision of 0.18 parts-per-thousand in the white light curve, at a cadence of 165 s, makes this one of the most precise datasets obtained from the ground. We created 12 chromatic transit light curves that we computed by integrating fluxes in wavelength bins of different sizes, ranging between 3.5 and 20 nm. Although the data are of excellent quality, the wavelength coverage and the precision of the transmission spectrum are not sufficient to neither rule out or to favor classic atmospheric models. Nonetheless, simple statistical analysis favors the clear atmosphere scenario. A larger wavelength coverage or space-based data is required to characterize the constituents of Qatar-1b's atmosphere and to compare it to the well known HD 189733b. On top of the similarities of the orbital and physical parameters of both exoplanets, from a long Hα photometric follow-up of Qatar-1, presented in this work, we find Qatar-1 to be as active as HD 189733.
Fil: von Essen, Carolina. University Aarhus; Dinamarca
Fil: Cellone, Sergio Aldo. 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: Mallonn, M.. Leibniz Institut für Astrophysik Potsdam; Alemania
Fil: Albrecht, S.. University Aarhus; Dinamarca
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: Müller, H. M.. Universitat Hamburg; Alemania - Materia
-
METHODS: DATA ANALYSIS
METHODS: OBSERVATIONAL
PLANETS AND SATELLITES: ATMOSPHERES
PLANETS AND SATELLITES: FUNDAMENTAL PARAMETERS
STARS: ACTIVITY - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/63089
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CONICET Digital (CONICET) |
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Testing connections between exo-atmospheres and their host stars: GEMINI-N/GMOS ground-based transmission spectrum of Qatar-1bvon Essen, CarolinaCellone, Sergio AldoMallonn, M.Albrecht, S.Miculán, Romina GiseleMüller, H. M.METHODS: DATA ANALYSISMETHODS: OBSERVATIONALPLANETS AND SATELLITES: ATMOSPHERESPLANETS AND SATELLITES: FUNDAMENTAL PARAMETERSSTARS: ACTIVITYhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Till date, only a handful exo-atmospheres have been well characterized, mostly by means of the transit method. Some classic examples are HD 209458b, HD 189733b, GJ-436b, and GJ-1214b. Data show exoplanet atmospheres to be diverse. However, this is based on a small number of cases. Here we focus our study on the exo-atmosphere of Qatar-1b, an exoplanet that looks much like HD 189733b regarding its host star's activity level, their surface gravity, scale height, equilibrium temperature and transit parameters. Thus, our motivation relied on carrying out a comparative study of their atmospheres, and assess if these are regulated by their environment. In this work we present one primary transit of Qatar-1b obtained during September, 2014, using the 8.1 m GEMINI North telescope. The observations were performed using the GMOS-N instrument in multi-object spectroscopic mode. We collected fluxes of Qatar-1 and six more reference stars, covering the wavelength range between 460 and 746 nm. The achieved photometric precision of 0.18 parts-per-thousand in the white light curve, at a cadence of 165 s, makes this one of the most precise datasets obtained from the ground. We created 12 chromatic transit light curves that we computed by integrating fluxes in wavelength bins of different sizes, ranging between 3.5 and 20 nm. Although the data are of excellent quality, the wavelength coverage and the precision of the transmission spectrum are not sufficient to neither rule out or to favor classic atmospheric models. Nonetheless, simple statistical analysis favors the clear atmosphere scenario. A larger wavelength coverage or space-based data is required to characterize the constituents of Qatar-1b's atmosphere and to compare it to the well known HD 189733b. On top of the similarities of the orbital and physical parameters of both exoplanets, from a long Hα photometric follow-up of Qatar-1, presented in this work, we find Qatar-1 to be as active as HD 189733.Fil: von Essen, Carolina. University Aarhus; DinamarcaFil: Cellone, Sergio Aldo. 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: Mallonn, M.. Leibniz Institut für Astrophysik Potsdam; AlemaniaFil: Albrecht, S.. University Aarhus; DinamarcaFil: 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: Müller, H. M.. Universitat Hamburg; AlemaniaEDP Sciences2017-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/63089von Essen, Carolina; Cellone, Sergio Aldo; Mallonn, M.; Albrecht, S.; Miculán, Romina Gisele; et al.; Testing connections between exo-atmospheres and their host stars: GEMINI-N/GMOS ground-based transmission spectrum of Qatar-1b; EDP Sciences; Astronomy and Astrophysics; 603; 7-2017; 1-12; A200004-6361CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/201730506info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2017/07/aa30506-17/aa30506-17.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 Técnicas2025-09-29T10:01:17Zoai:ri.conicet.gov.ar:11336/63089instacron: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 10:01:17.373CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Testing connections between exo-atmospheres and their host stars: GEMINI-N/GMOS ground-based transmission spectrum of Qatar-1b |
title |
Testing connections between exo-atmospheres and their host stars: GEMINI-N/GMOS ground-based transmission spectrum of Qatar-1b |
spellingShingle |
Testing connections between exo-atmospheres and their host stars: GEMINI-N/GMOS ground-based transmission spectrum of Qatar-1b von Essen, Carolina METHODS: DATA ANALYSIS METHODS: OBSERVATIONAL PLANETS AND SATELLITES: ATMOSPHERES PLANETS AND SATELLITES: FUNDAMENTAL PARAMETERS STARS: ACTIVITY |
title_short |
Testing connections between exo-atmospheres and their host stars: GEMINI-N/GMOS ground-based transmission spectrum of Qatar-1b |
title_full |
Testing connections between exo-atmospheres and their host stars: GEMINI-N/GMOS ground-based transmission spectrum of Qatar-1b |
title_fullStr |
Testing connections between exo-atmospheres and their host stars: GEMINI-N/GMOS ground-based transmission spectrum of Qatar-1b |
title_full_unstemmed |
Testing connections between exo-atmospheres and their host stars: GEMINI-N/GMOS ground-based transmission spectrum of Qatar-1b |
title_sort |
Testing connections between exo-atmospheres and their host stars: GEMINI-N/GMOS ground-based transmission spectrum of Qatar-1b |
dc.creator.none.fl_str_mv |
von Essen, Carolina Cellone, Sergio Aldo Mallonn, M. Albrecht, S. Miculán, Romina Gisele Müller, H. M. |
author |
von Essen, Carolina |
author_facet |
von Essen, Carolina Cellone, Sergio Aldo Mallonn, M. Albrecht, S. Miculán, Romina Gisele Müller, H. M. |
author_role |
author |
author2 |
Cellone, Sergio Aldo Mallonn, M. Albrecht, S. Miculán, Romina Gisele Müller, H. M. |
author2_role |
author author author author author |
dc.subject.none.fl_str_mv |
METHODS: DATA ANALYSIS METHODS: OBSERVATIONAL PLANETS AND SATELLITES: ATMOSPHERES PLANETS AND SATELLITES: FUNDAMENTAL PARAMETERS STARS: ACTIVITY |
topic |
METHODS: DATA ANALYSIS METHODS: OBSERVATIONAL PLANETS AND SATELLITES: ATMOSPHERES PLANETS AND SATELLITES: FUNDAMENTAL PARAMETERS STARS: ACTIVITY |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Till date, only a handful exo-atmospheres have been well characterized, mostly by means of the transit method. Some classic examples are HD 209458b, HD 189733b, GJ-436b, and GJ-1214b. Data show exoplanet atmospheres to be diverse. However, this is based on a small number of cases. Here we focus our study on the exo-atmosphere of Qatar-1b, an exoplanet that looks much like HD 189733b regarding its host star's activity level, their surface gravity, scale height, equilibrium temperature and transit parameters. Thus, our motivation relied on carrying out a comparative study of their atmospheres, and assess if these are regulated by their environment. In this work we present one primary transit of Qatar-1b obtained during September, 2014, using the 8.1 m GEMINI North telescope. The observations were performed using the GMOS-N instrument in multi-object spectroscopic mode. We collected fluxes of Qatar-1 and six more reference stars, covering the wavelength range between 460 and 746 nm. The achieved photometric precision of 0.18 parts-per-thousand in the white light curve, at a cadence of 165 s, makes this one of the most precise datasets obtained from the ground. We created 12 chromatic transit light curves that we computed by integrating fluxes in wavelength bins of different sizes, ranging between 3.5 and 20 nm. Although the data are of excellent quality, the wavelength coverage and the precision of the transmission spectrum are not sufficient to neither rule out or to favor classic atmospheric models. Nonetheless, simple statistical analysis favors the clear atmosphere scenario. A larger wavelength coverage or space-based data is required to characterize the constituents of Qatar-1b's atmosphere and to compare it to the well known HD 189733b. On top of the similarities of the orbital and physical parameters of both exoplanets, from a long Hα photometric follow-up of Qatar-1, presented in this work, we find Qatar-1 to be as active as HD 189733. Fil: von Essen, Carolina. University Aarhus; Dinamarca Fil: Cellone, Sergio Aldo. 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: Mallonn, M.. Leibniz Institut für Astrophysik Potsdam; Alemania Fil: Albrecht, S.. University Aarhus; Dinamarca 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: Müller, H. M.. Universitat Hamburg; Alemania |
description |
Till date, only a handful exo-atmospheres have been well characterized, mostly by means of the transit method. Some classic examples are HD 209458b, HD 189733b, GJ-436b, and GJ-1214b. Data show exoplanet atmospheres to be diverse. However, this is based on a small number of cases. Here we focus our study on the exo-atmosphere of Qatar-1b, an exoplanet that looks much like HD 189733b regarding its host star's activity level, their surface gravity, scale height, equilibrium temperature and transit parameters. Thus, our motivation relied on carrying out a comparative study of their atmospheres, and assess if these are regulated by their environment. In this work we present one primary transit of Qatar-1b obtained during September, 2014, using the 8.1 m GEMINI North telescope. The observations were performed using the GMOS-N instrument in multi-object spectroscopic mode. We collected fluxes of Qatar-1 and six more reference stars, covering the wavelength range between 460 and 746 nm. The achieved photometric precision of 0.18 parts-per-thousand in the white light curve, at a cadence of 165 s, makes this one of the most precise datasets obtained from the ground. We created 12 chromatic transit light curves that we computed by integrating fluxes in wavelength bins of different sizes, ranging between 3.5 and 20 nm. Although the data are of excellent quality, the wavelength coverage and the precision of the transmission spectrum are not sufficient to neither rule out or to favor classic atmospheric models. Nonetheless, simple statistical analysis favors the clear atmosphere scenario. A larger wavelength coverage or space-based data is required to characterize the constituents of Qatar-1b's atmosphere and to compare it to the well known HD 189733b. On top of the similarities of the orbital and physical parameters of both exoplanets, from a long Hα photometric follow-up of Qatar-1, presented in this work, we find Qatar-1 to be as active as HD 189733. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-07 |
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/11336/63089 von Essen, Carolina; Cellone, Sergio Aldo; Mallonn, M.; Albrecht, S.; Miculán, Romina Gisele; et al.; Testing connections between exo-atmospheres and their host stars: GEMINI-N/GMOS ground-based transmission spectrum of Qatar-1b; EDP Sciences; Astronomy and Astrophysics; 603; 7-2017; 1-12; A20 0004-6361 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/63089 |
identifier_str_mv |
von Essen, Carolina; Cellone, Sergio Aldo; Mallonn, M.; Albrecht, S.; Miculán, Romina Gisele; et al.; Testing connections between exo-atmospheres and their host stars: GEMINI-N/GMOS ground-based transmission spectrum of Qatar-1b; EDP Sciences; Astronomy and Astrophysics; 603; 7-2017; 1-12; A20 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/10.1051/0004-6361/201730506 info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2017/07/aa30506-17/aa30506-17.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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1844613804718030848 |
score |
13.070432 |