The James Webb space telescope mission

JP Gardner, JC Mather, R Abbott, JS Abell… - Publications of the …, 2023 - iopscience.iop.org
We summarize the history, concept, scientific program, and technical performance of the
James Webb Space Telescope (JWST, Webb; Gardner et al. 2006). This paper points to and …

The JWST Early-release Science Program for Direct Observations of Exoplanetary Systems II: a 1 to 20 μm spectrum of the planetary-mass companion VHS 1256 …

BE Miles, BA Biller, P Patapis, K Worthen… - The Astrophysical …, 2023 - iopscience.iop.org
We present the highest fidelity spectrum to date of a planetary-mass object. VHS 1256 b is
a< 20 M Jup widely separated (∼ 8'', a= 150 au), young, planetary-mass companion that …

The JWST Early Release Science Program for Direct Observations of Exoplanetary Systems I: High-contrast Imaging of the Exoplanet HIP 65426 b from 2 to 16 μm

AL Carter, S Hinkley, J Kammerer… - The Astrophysical …, 2023 - iopscience.iop.org
Abstract We present JWST Early Release Science coronagraphic observations of the super-
Jupiter exoplanet, HIP 65426b, with the Near-Infrared Camera (NIRCam) from 2 to 5 μm …

Dynamics and clouds in planetary atmospheres from telescopic observations

A Sánchez-Lavega, P Irwin, A García Muñoz - The Astronomy and …, 2023 - Springer
This review presents an insight into our current knowledge of the atmospheres of the planets
Venus, Mars, Jupiter, Saturn, Uranus and Neptune, the satellite Titan, and those of …

Direct discovery of the inner exoplanet in the HD 206893 system-Evidence for deuterium burning in a planetary-mass companion

S Hinkley, S Lacour, GD Marleau, AM Lagrange… - Astronomy & …, 2023 - aanda.org
Aims. HD 206893 is a nearby debris disk star that hosts a previously identified brown dwarf
companion with an orbital separation of∼ 10 au. Long-term precise radial velocity (RV) …

Roaring Storms in the Planetary-mass Companion VHS 1256-1257 b: Hubble Space Telescope Multiepoch Monitoring Reveals Vigorous Evolution in an Ultracool …

Y Zhou, BP Bowler, D Apai, T Kataria… - The Astronomical …, 2022 - iopscience.iop.org
The photometric and spectral variability of brown dwarfs probes heterogeneous temperature
and cloud distributions and traces the atmospheric circulation patterns. We present a new 42 …

On the masses, age, and architecture of the VHS J1256− 1257AB b system

TJ Dupuy, MC Liu, EL Evans, WMJ Best… - Monthly Notices of …, 2023 - academic.oup.com
ABSTRACT VHS J1256− 1257 AB is an ultracool dwarf binary that hosts a wide-separation
planetary-mass companion that is a key target of the JWST Exoplanet Early Release …

X-SHYNE: X-shooter spectra of young exoplanet analogs-I. A medium-resolution 0.65–2.5 μm one-shot spectrum of VHS 1256− 1257 b

S Petrus, G Chauvin, M Bonnefoy, P Tremblin… - Astronomy & …, 2023 - aanda.org
We present simultaneous 0.65–2.5 μm medium resolution (3300≤ R λ≤ 8100) VLT/X-
shooter spectra of the relatively young (150–300 Myr) low-mass (19±5M Jup) L–T transition …

Performance of near-infrared high-contrast imaging methods with JWST from commissioning

J Kammerer, J Girard, AL Carter… - Space Telescopes …, 2022 - spiedigitallibrary.org
The James Webb Space Telescope (JWST) will revolutionize the field of high-contrast
imaging and enable both the direct detection of Saturn-mass planets and the …

JWST/MIRI coronagraphic performances as measured on-sky

A Boccaletti, C Cossou, P Baudoz, PO Lagage… - Astronomy & …, 2022 - aanda.org
Context. Characterization of directly imaged exoplanets is one of the most eagerly
anticipated science functions of the James Webb Space Telescope. MIRI, the mid-IR …