Results 11 to 20 of about 68,799 (245)

No thick carbon dioxide atmosphere on the rocky exoplanet TRAPPIST-1 c [PDF]

open access: yesNature, 2023
Seven rocky planets orbit the nearby dwarf star TRAPPIST-1, providing a unique opportunity to search for atmospheres on small planets outside the Solar System^ 1 . Thanks to the recent launch of the James Webb Space Telescope (JWST), possible atmospheric
Sebastian Zieba   +18 more
semanticscholar   +1 more source

Methane throughout the atmosphere of the warm exoplanet WASP-80b [PDF]

open access: yesNature, 2023
Transmission and emission spectra of the 825 K warm Jupiter WASP-80b taken with the NIRCam instrument of the JWST show strong evidence of CH_4 at greater than 6σ significance The abundances of main carbon- and oxygen-bearing gases in the atmospheres of ...
T. Bell   +14 more
semanticscholar   +1 more source

POSEIDON: A Multidimensional Atmospheric Retrieval Code for Exoplanet Spectra [PDF]

open access: yesJournal of Open Source Software, 2023
Spectroscopic observations of exoplanet atmospheres can reveal the chemical composition, temperature, cloud properties, and (potentially) the habitability of these distant worlds.
R. MacDonald
semanticscholar   +1 more source

Early Release Science of the exoplanet WASP-39b with JWST NIRSpec PRISM [PDF]

open access: yesNature, 2022
A broad-wavelength 0.5–5.5 µm atmospheric transmission spectrum of WASP-39b, a 1,200 K, roughly Saturn-mass, Jupiter-radius exoplanet, demonstrates JWST’s sensitivity to a rich diversity of exoplanet compositions and chemical processes.
Z. Rustamkulov   +93 more
semanticscholar   +1 more source

Early Release Science of the exoplanet WASP-39b with JWST NIRISS [PDF]

open access: yesNature, 2022
The transmission spectrum of the exoplanet WASP-39b is obtained using observations from the Single-Object Slitless Spectroscopy mode of the Near Infrared Imager and Slitless Spectrograph instrument aboard the JWST.
A. Feinstein   +88 more
semanticscholar   +1 more source

Identification of carbon dioxide in an exoplanet atmosphere [PDF]

open access: yesNature, 2022
Carbon dioxide (CO_2) is a key chemical species that is found in a wide range of planetary atmospheres. In the context of exoplanets, CO_2 is an indicator of the metal enrichment (that is, elements heavier than helium, also called ‘metallicity’)^ 1 – 3 ,
The Jwst Transiting Exoplanet Community Early Release Ahrer   +363 more
semanticscholar   +1 more source

Early Release Science of the exoplanet WASP-39b with JWST NIRCam [PDF]

open access: yesNature, 2022
Time-series observations from the JWST of the transiting exoplanet WASP-39b show gaseous water in the planet’s atmosphere and place an upper limit on the abundance of methane.
E. Ahrer   +98 more
semanticscholar   +1 more source

A Catalog of Exoplanet Atmospheric Retrieval Codes [PDF]

open access: yesResearch Notes of the AAS, 2023
Exoplanet atmospheric retrieval is a computational technique widely used to infer properties of planetary atmospheres from remote spectroscopic observations.
R. MacDonald, N. Batalha
semanticscholar   +1 more source

Mapping out the time-evolution of exoplanet processes [PDF]

open access: green, 2019
There are many competing theories and models describing the formation, migration and evolution of exoplanet systems. As both the precision with which we can characterize exoplanets and their host stars, and the number of systems for which we can make ...
Jessie L. Christiansen   +4 more
openalex   +5 more sources

'exoplanet': Gradient-based probabilistic inference for exoplanet data & other astronomical time series [PDF]

open access: yesJournal of Open Source Software, 2021
"exoplanet"is a toolkit for probabilistic modeling of astronomical time series data, with a focus on observations of exoplanets, using PyMC3 (Salvatier et al., 2016).
D. Foreman-Mackey   +15 more
semanticscholar   +1 more source

Home - About - Disclaimer - Privacy