ARES V: No evidence for molecular absorption in the HST WFC3 spectrum of GJ 1132 b
MODIRROUSTA-GALIAN, Darius
INAF - Osservatorio Astronomico di Palermo [OAPa]
Dipartimento di Fisica e Chimica [Palermo] [DiFC]
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INAF - Osservatorio Astronomico di Palermo [OAPa]
Dipartimento di Fisica e Chimica [Palermo] [DiFC]
MODIRROUSTA-GALIAN, Darius
INAF - Osservatorio Astronomico di Palermo [OAPa]
Dipartimento di Fisica e Chimica [Palermo] [DiFC]
INAF - Osservatorio Astronomico di Palermo [OAPa]
Dipartimento di Fisica e Chimica [Palermo] [DiFC]
MORELLO, Giuseppe
INAF - Osservatorio Astronomico di Palermo [OAPa]
Instituto de Astrofisica de Canarias [IAC]
INAF - Osservatorio Astronomico di Palermo [OAPa]
Instituto de Astrofisica de Canarias [IAC]
BLAIN, Doriann
Laboratoire d'études spatiales et d'instrumentation en astrophysique = Laboratory of Space Studies and Instrumentation in Astrophysics [LESIA]
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
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
KIEFER, Flavien
Laboratoire d'études spatiales et d'instrumentation en astrophysique = Laboratory of Space Studies and Instrumentation in Astrophysics [LESIA]
Laboratoire d'études spatiales et d'instrumentation en astrophysique = Laboratory of Space Studies and Instrumentation in Astrophysics [LESIA]
POVEDA, Mathilde
Laboratoire Interuniversitaire des Systèmes Atmosphériques [LISA (UMR_7583)]
Maison de la Simulation [MDLS]
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]
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]
CHARNAY, Benjamin
Laboratoire d'études spatiales et d'instrumentation en astrophysique = Laboratory of Space Studies and Instrumentation in Astrophysics [LESIA]
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]
Institut d'Astrophysique de Paris [IAP]
Laboratoire d'études spatiales et d'instrumentation en astrophysique = Laboratory of Space Studies and Instrumentation in Astrophysics [LESIA]
BEAULIEU, Jean-Philippe
Institut d'Astrophysique de Paris [IAP]
School of Physical Sciences [Hobart]
< Reduce
Institut d'Astrophysique de Paris [IAP]
School of Physical Sciences [Hobart]
Language
en
Article de revue
This item was published in
The Astronomical Journal. 2021-05-26, vol. 161, n° 6, p. 284
American Astronomical Society
English Abstract
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 ...Read more >
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.Read less <
European Project
Exoplanet Atmosphere New Emission Transmission Spectra Analysis
Atmospheres across the Universe - H2020-EU.1.1.
Atmospheres across the Universe - H2020-EU.1.1.
ANR Project
Etude des hydrocarbures en émission et absorption dasn les exoplanètes à haute température - ANR-16-CE31-0005
Origin
Hal imported