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NIRCam Performance on JWST In Flight
Marcia J. Rieke, Douglas M. Kelly, Karl Misselt +7
The Near Infrared Camera for the James Webb Space Telescope is delivering the imagery that astronomers have hoped for ever since JWST was proposed back in the 1990s. In the Commiss…
TOI-179: a young system with a transiting compact Neptune-mass planet and a low-mass companion in outer orbit
S. Desidera, M. Damasso, R. Gratton +29
Transiting planets around young stars are key benchmarks for our understanding of planetary systems. One of such candidates was identified around the K dwarf HD 18599 by TESS, labe…
Performance of near-infrared high-contrast imaging methods with JWST from commissioning
Jens Kammerer, Julien Girard, Aarynn L. Carter +12
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 characterization of…
The JWST Early Release Science Program for Direct Observations of Exoplanetary Systems II: A 1 to 20 Micron Spectrum of the Planetary-Mass Companion VHS 1256-1257 b
Brittany E. Miles, Beth A. Biller, Polychronis Patapis +101
We present the highest fidelity spectrum to date of a planetary-mass object. VHS 1256 b is a 20 M widely separated (8\arcsec, a = 150 au), young, planetary-…
JWST/NIRCam Coronagraphy: Commissioning and First On-Sky Results
Julien H. Girard, Jarron Leisenring, Jens Kammerer +53
In a cold and stable space environment, the James Webb Space Telescope (JWST or "Webb") reaches unprecedented sensitivities at wavelengths beyond 2 microns, serving most fields of…
First Peek with JWST/NIRCam Wide-Field Slitless Spectroscopy: Serendipitous Discovery of a Strong [O III]/H Emitter at
Fengwu Sun, Eiichi Egami, Nor Pirzkal +15
We report the serendipitous discovery of an [O III] 4959/5007 and H line emitter in the Epoch of Reionization (EoR) with the JWST commissioning data taken in the NIRCam wide…