Search Publications
JADES: Resolving the Stellar Component and Filamentary Overdense Environment of Hubble Space Telescope (HST)-dark Submillimeter Galaxy HDF850.1 at z = 5.18
Chevallard, Jacopo; Übler, Hannah; Bunker, Andrew J. +28 more
HDF850.1 is the brightest submillimeter galaxy (SMG) in the Hubble Deep Field. It is known as a heavily dust-obscured star-forming galaxy embedded in an overdense environment at z = 5.18. With nine-band NIRCam images at 0.8-5.0 µm obtained through the JWST Advanced Deep Extragalactic Survey, we detect and resolve the rest-frame UV-optical co…
Medium Bands, Mega Science: A JWST/NIRCam Medium-band Imaging Survey of A2744
Maseda, Michael V.; Franx, Marijn; Muzzin, Adam +40 more
In this paper, we describe the "Medium Bands, Mega Science" JWST Cycle 2 survey (JWST-GO-4111) and demonstrate the power of these data to reveal both the spatially integrated and spatially resolved properties of galaxies from the local Universe to the era of cosmic dawn. Executed in 2023 November, MegaScience obtained ∼30 arcmin2 of dee…
The Discovery of the Faintest Known Milky Way Satellite Using UNIONS
Smith, Simon E. T.; Cerny, William; Hayes, Christian R. +14 more
We present the discovery of Ursa Major III/UNIONS 1, the least luminous known satellite of the Milky Way, which is estimated to have an absolute V-band magnitude of $+{2.2}_{-0.3}^{+0.4}$ mag, equivalent to a total stellar mass of ${16}_{-5}^{+6}$ M ⊙. Ursa Major III/UNIONS 1 was uncovered in the deep, wide-field Ultraviolet Near Infrar…
EIGER. VI. The Correlation Function, Host Halo Mass, and Duty Cycle of Luminous Quasars at z ≳ 6
Hennawi, Joseph F.; Simcoe, Robert A.; Naidu, Rohan P. +13 more
We expect luminous (M 1450 ≲ ‑26.5) high-redshift quasars to trace the highest-density peaks in the early Universe. Here, we present observations of four z ≳ 6 quasar fields using JWST/NIRCam in the imaging and wide-field slitless spectroscopy mode and report a wide range in the number of detected [O III]-emitting galaxies in the quasar…
Widespread Rapid Quenching at Cosmic Noon Revealed by JWST Deep Spectroscopy
Conroy, Charlie; Johnson, Benjamin D.; Belli, Sirio +16 more
Massive quiescent galaxies in the young Universe are expected to be quenched rapidly, but it is unclear whether they all experience starbursts before quenching and what physical mechanism drives rapid quenching. We study 14 massive quiescent galaxies (
Characterization of JWST NIRCam PSFs and Implications for AGN+host Image Decomposition
Shen, Yue; Zhuang, Ming-Yang
We present a detailed analysis of the point-spread function (PSF) of JWST NIRCam imaging in eight filters: F070W, F115W, F150W, F200W, F277W, F356W, F444W, and F480M, using publicly available data. Spatial variations in the PSF FWHM generally decrease with wavelength: the maximum and rms fractional variations are ∼20% and 5% in F070W, reduced to ∼…
High-contrast JWST-MIRI Spectroscopy of Planet-forming Disks for the JDISC Survey
Zhang, Ke; Pascucci, Ilaria; Banzatti, Andrea +26 more
The JWST Disk Infrared Spectral Chemistry Survey (JDISCS) aims to understand the evolution of the chemistry of inner protoplanetary disks using the Mid-InfraRed Instrument (MIRI) on the James Webb Space Telescope (JWST). With a growing sample of >30 disks, the survey implements a custom method to calibrate the MIRI Medium Resolution Spectromete…
MIDIS: Unveiling the Role of Strong Hα Emitters During the Epoch of Reionization with JWST
Ilbert, O.; Östlin, G.; Güdel, M. +41 more
By using an ultradeep JWST/MIRI image at 5.6 µm in the Hubble eXtreme Deep Field, we constrain the role of strong Hα emitters (HAEs) during "cosmic reionization" at z ≃ 7–8. Our sample of HAEs is comprised of young (<35 Myr) galaxies, except for one single galaxy (≈300 Myr), with low stellar masses (≲109 M ⊙). These …
Rest-frame UV Colors for Faint Galaxies at z ∼ 9–16 with the JWST NGDEEP Survey
Papovich, Casey; Finkelstein, Steven L.; Pérez-González, Pablo G. +14 more
We present measurements of the rest-frame UV spectral slope, β, for a sample of 36 faint star-forming galaxies at z ∼ 9–16 discovered in one of the deepest JWST NIRCam surveys to date, the Next Generation Deep Extragalactic Exploratory Public Survey. We use robust photometric measurements for UV-faint galaxies (down to M UV ∼ ‑16), orig…
Investigating Protostellar Accretion-driven Outflows across the Mass Spectrum: JWST NIRSpec Integral Field Unit 3–5 µm Spectral Mapping of Five Young Protostars
Manoj, P.; Narang, Mayank; Bourke, Tyler L. +36 more
Investigating Protostellar Accretion is a Cycle 1 JWST program using the NIRSpec+MIRI integral field units to obtain 2.9–28 µm spectral cubes of five young protostars with luminosities of 0.2–10,000 L ⊙ in their primary accretion phase. This paper introduces the NIRSpec 2.9–5.3 µm data of the inner 840–9000 au with spatial r…