MUGNAI, Lorenzo; MODIRROUSTA-GALIAN, Darius; EDWARDS, Billy; CHANGEAT, Quentin; BOUWMAN, Jeroen; MORELLO, Giuseppe; AL-REFAIE, Ahmed; BAEYENS, Robin; BIEGER, Michelle Fabienne; BLAIN, Doriann; GRESSIER, Amélie; GUILLUY, Gloria; JAZIRI, Yassin; KIEFER, Flavien; MORVAN, Mario; PLURIEL, William; POVEDA, Mathilde; SKAF, Nour; WHITEFORD, Niall; WRIGHT, Sam; YIP, Kai Hou; ZINGALES, Tiziano; CHARNAY, Benjamin; DROSSART, Pierre; LECONTE, Jérémy; VENOT, Olivia; WALDMANN, Ingo; BEAULIEU, Jean-Philippe

doi:10.3847/1538-3881/abf3c3

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Licence d’utilisation du document

MUGNAI, Lorenzo
Dipartimento di Fisica [Roma La Sapienza]

MODIRROUSTA-GALIAN, Darius
INAF - Osservatorio Astronomico di Palermo [OAPa]
Dipartimento di Fisica e Chimica [Palermo] [DiFC]

EDWARDS, Billy
Department of Physics and Astronomy [UCL London]

MUGNAI, Lorenzo
Dipartimento di Fisica [Roma La Sapienza]

MODIRROUSTA-GALIAN, Darius
INAF - Osservatorio Astronomico di Palermo [OAPa]
Dipartimento di Fisica e Chimica [Palermo] [DiFC]

EDWARDS, Billy
Department of Physics and Astronomy [UCL London]

CHANGEAT, Quentin
Department of Physics and Astronomy [UCL London]

BOUWMAN, Jeroen
Max-Planck-Institut für Astronomie [MPIA]

MORELLO, Giuseppe
INAF - Osservatorio Astronomico di Palermo [OAPa]
Instituto de Astrofisica de Canarias [IAC]

AL-REFAIE, Ahmed
Department of Physics and Astronomy [UCL London]

BAEYENS, Robin
Institute of Astronomy [Leuven]

BIEGER, Michelle Fabienne
College of Engineering, Mathematics and Physical Sciences [Exeter] [EMPS]

BLAIN, Doriann
Laboratoire d'études spatiales et d'instrumentation en astrophysique = Laboratory of Space Studies and Instrumentation in Astrophysics [LESIA]

GRESSIER, Amélie
Institut d'Astrophysique de Paris [IAP]
Laboratoire d'études spatiales et d'instrumentation en astrophysique = Laboratory of Space Studies and Instrumentation in Astrophysics [LESIA]
PLANETO - LATMOS

GUILLUY, Gloria
Dipartimento di Fisica [Torino]
INAF - Osservatorio Astrofisico di Torino [OATo]

JAZIRI, Yassin
Laboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]

KIEFER, Flavien
Laboratoire d'études spatiales et d'instrumentation en astrophysique = Laboratory of Space Studies and Instrumentation in Astrophysics [LESIA]

MORVAN, Mario
Department of Physics and Astronomy [UCL London]

PLURIEL, William
Laboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]

POVEDA, Mathilde
Laboratoire Interuniversitaire des Systèmes Atmosphériques [LISA (UMR_7583)]
Maison de la Simulation [MDLS]

SKAF, Nour
Laboratoire d'études spatiales et d'instrumentation en astrophysique = Laboratory of Space Studies and Instrumentation in Astrophysics [LESIA]
Subaru Telescope
Department of Physics and Astronomy [UCL London]

WHITEFORD, Niall
Institute for Astronomy [Edinburgh] [IfA]
Centre for Exoplanet Science

WRIGHT, Sam
Department of Physics and Astronomy [UCL London]

YIP, Kai Hou
Department of Physics and Astronomy [UCL London]

ZINGALES, Tiziano
Laboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]

CHARNAY, Benjamin
Laboratoire d'études spatiales et d'instrumentation en astrophysique = Laboratory of Space Studies and Instrumentation in Astrophysics [LESIA]

DROSSART, Pierre
Institut d'Astrophysique de Paris [IAP]
Laboratoire d'études spatiales et d'instrumentation en astrophysique = Laboratory of Space Studies and Instrumentation in Astrophysics [LESIA]

LECONTE, Jérémy
Laboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]

VENOT, Olivia
Laboratoire Interuniversitaire des Systèmes Atmosphériques [LISA (UMR_7583)]

WALDMANN, Ingo
University College of London [London] [UCL]

BEAULIEU, Jean-Philippe
Institut d'Astrophysique de Paris [IAP]
School of Physical Sciences [Hobart]

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Langue

Article de revue

Ce document a été publié dans

The Astronomical Journal. 2021-05-26, vol. 161, n° 6, p. 284

American Astronomical Society

Résumé en anglais

We present a study on the spatially scanned spectroscopic observations of the transit of GJ 1132 b, a warm (∼500 K) super-Earth (1.13 R⊕) that was obtained with the G141 grism (1.125–1.650 μm) of the Wide Field Camera 3 (WFC3) on board the Hubble Space Telescope. We used the publicly available Iraclis pipeline to extract the planetary transmission spectra from the five visits and produced a precise transmission spectrum. We analyzed the spectrum using the TauREx3 atmospheric retrieval code, with which we show that the measurements do not contain molecular signatures in the investigated wavelength range and are best fit with a flat-line model. Our results suggest that the planet does not have a clear primordial, hydrogen-dominated atmosphere. Instead, GJ 1132 b could have a cloudy hydrogen-dominated atmosphere, have a very enriched secondary atmosphere, be airless, or have a tenuous atmosphere that has not been detected. Due to the narrow wavelength coverage of WFC3, these scenarios cannot be distinguished yet, but the James Webb Space Telescope may be capable of detecting atmospheric features, although several observations may be required to provide useful constraints.< Réduire

DOI

http://dx.doi.org/10.3847/1538-3881/abf3c3

Projet Européen

Exoplanet Atmosphere New Emission Transmission Spectra Analysis
Atmospheres across the Universe - H2020-EU.1.1.

Project ANR

Etude des hydrocarbures en émission et absorption dasn les exoplanètes à haute température - ANR-16-CE31-0005

Origine

Importé de hal

Unités de recherche

Laboratoire d'Astrophysique de Bordeaux (LAB) - UMR 5804