Search Publications
UNCOVER: The Growth of the First Massive Black Holes from JWST/NIRSpec-Spectroscopic Redshift Confirmation of an X-Ray Luminous AGN at z = 10.1
Papovich, Casey; van Dokkum, Pieter; Fujimoto, Seiji +27 more
The James Webb Space Telescope is now detecting early black holes (BHs) as they transition from "seeds" to supermassive BHs. Recently, Bogdan et al. reported the detection of an X-ray luminous supermassive BH, UHZ-1, with a photometric redshift at z > 10. Such an extreme source at this very high redshift provides new insights on seeding and gro…
EIGER. II. First Spectroscopic Characterization of the Young Stars and Ionized Gas Associated with Strong Hβ and [O III] Line Emission in Galaxies at z = 5-7 with JWST
Simcoe, Robert A.; Kashino, Daichi; Eilers, Anna-Christina +4 more
We present emission-line measurements and physical interpretations for a sample of 117 [O III] emitting galaxies at z = 5.33-6.93, using the first deep JWST/NIRCam wide-field slitless spectroscopic observations. Our 9.7 hr integration is centered upon the z = 6.3 quasar J0100+2802-the first of six fields targeted by the EIGER survey-and covers λ =…
An Atlas of Color-selected Quiescent Galaxies at z > 3 in Public JWST Fields
Strait, Victoria; Fujimoto, Seiji; Heintz, Kasper E. +24 more
We present the results of a systematic search for candidate quiescent galaxies in the distant universe in 11 JWST fields with publicly available observations collected during the first 3 months of operations and covering an effective sky area of ~145 arcmin2. We homogeneously reduce the new JWST data and combine them with existing obser…
Dusty Starbursts Masquerading as Ultra-high Redshift Galaxies in JWST CEERS Observations
Papovich, Casey; Cole, Justin W.; Yang, Guang +122 more
Lyman-break galaxy (LBG) candidates at z ≳ 10 are rapidly being identified in James Webb Space Telescope (JWST)/NIRCam observations. Due to the (redshifted) break produced by neutral hydrogen absorption of rest-frame UV photons, these sources are expected to drop out in the bluer filters while being well detected in redder filters. However, here w…
JADES Imaging of GN-z11: Revealing the Morphology and Environment of a Luminous Galaxy 430 Myr after the Big Bang
Maseda, Michael V.; Carniani, Stefano; Übler, Hannah +45 more
We present JWST NIRCam nine-band near-infrared imaging of the luminous z = 10.6 galaxy GN-z11 from the JWST Advanced Deep Extragalactic Survey of the GOODS-N field. We find a spectral energy distribution (SED) entirely consistent with the expected form of a high-redshift galaxy: a clear blue continuum from 1.5 to 4 µm with a complete dropout…
Target Selection and Validation of DESI Quasars
Myers, Adam D.; Bailey, Stephen; Font-Ribera, Andreu +54 more
The Dark Energy Spectroscopic Instrument (DESI) survey will measure large-scale structures using quasars as direct tracers of dark matter in the redshift range 0.9 < z < 2.1 and using Lyα forests in quasar spectra at z > 2.1. We present several methods to select candidate quasars for DESI, using input photometric imaging in three optical …
Carbon-bearing Molecules in a Possible Hycean Atmosphere
Madhusudhan, Nikku; Constantinou, Savvas; Moses, Julianne I. +3 more
The search for habitable environments and biomarkers in exoplanetary atmospheres is the holy grail of exoplanet science. The detection of atmospheric signatures of habitable Earth-like exoplanets is challenging owing to their small planet–star size contrast and thin atmospheres with high mean molecular weight. Recently, a new class of habitable ex…
The Art of Measuring Physical Parameters in Galaxies: A Critical Assessment of Spectral Energy Distribution Fitting Techniques
Burgarella, Denis; Dickinson, Mark; Fontana, Adriano +52 more
The study of galaxy evolution hinges on our ability to interpret multiwavelength galaxy observations in terms of their physical properties. To do this, we rely on spectral energy distribution (SED) models, which allow us to infer physical parameters from spectrophotometric data. In recent years, thanks to wide and deep multiwave band galaxy survey…
First Batch of z ≈ 11-20 Candidate Objects Revealed by the James Webb Space Telescope Early Release Observations on SMACS 0723-73
Yan, Haojing; Cheng, Cheng; Ling, Chenxiaoji +2 more
On 2022 July 13, NASA released to the whole world the data obtained by the James Webb Space Telescope (JWST) Early Release Observations (ERO). These are the first set of science-grade data from this long-awaited facility, marking the beginning of a new era in astronomy. In the study of the early universe, JWST will allow us to push far beyond z ≈ …
CEERS Key Paper. III. The Diversity of Galaxy Structure and Morphology at z = 3-9 with JWST
Papovich, Casey; Yang, Guang; Finkelstein, Steven L. +59 more
We present a comprehensive analysis of the evolution of the morphological and structural properties of a large sample of galaxies at z = 3-9 using early James Webb Space Telescope (JWST) CEERS NIRCam observations. Our sample consists of 850 galaxies at z > 3 detected in both Hubble Space Telescope (HST)/WFC3 and CEERS JWST/NIRCam images, enabli…