Search Publications
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…
To High Redshift and Low Mass: Exploring the Emergence of Quenched Galaxies and Their Environments at 3 < z < 6 in the Ultra-deep JADES MIRI F770W Parallel
Parlanti, Eleonora; Carniani, Stefano; D'Eugenio, Francesco +25 more
We present the robust selection of high-redshift quiescent galaxies (QG) and poststarburst (PSB) galaxies using ultra-deep NIRCam and MIRI imaging from the JWST Advanced Deep Extragalactic Survey (JADES). At 3 < z < 6, MIRI 7.7 µm imaging provides rest-frame J band, which is commonly used to break the degeneracy between old stellar pop…
Tip of the Red Giant Branch Distances with JWST: An Absolute Calibration in NGC 4258 and First Applications to Type Ia Supernova Hosts
Casertano, Stefano; Dolphin, Andrew; Li, Siyang +12 more
The tip of the red giant branch (TRGB) allows for the measurement of precise and accurate distances to nearby galaxies based on the brightest ascent of low-mass red giant branch stars before they undergo the helium flash. With the advent of JWST, there is great promise to utilize the technique to measure galaxy distances out to at least 50 Mpc, si…
Robust Evidence for the Breakdown of Standard Gravity at Low Acceleration from Statistically Pure Binaries Free of Hidden Companions
Chae, Kyu-Hyun
It is found that Gaia Data Release 3 binary stars selected with stringent requirements on astrometric measurements and radial velocities naturally satisfy Newtonian dynamics without hidden close companions when the projected separation s ≲ 2 kau, showing that pure binaries can be selected. It is then found that pure binaries selected with the same…
UNCOVER NIRSpec/PRISM Spectroscopy Unveils Evidence of Early Core Formation in a Massive, Centrally Dusty Quiescent Galaxy at z spec = 3.97
Glazebrook, Karl; Nanayakkara, Themiya; van Dokkum, Pieter +28 more
We report the spectroscopic confirmation of a massive (
Ionized Gas Kinematics with FRESCO: An Extended, Massive, Rapidly Rotating Galaxy at z = 5.4
Maseda, Michael V.; Übler, Hannah; Bunker, Andrew J. +43 more
With the remarkable sensitivity and resolution of JWST in the infrared, measuring rest-optical kinematics of galaxies at z > 5 has become possible for the first time. This study pilots a new method for measuring galaxy dynamics for highly multiplexed, unbiased samples by combining FRESCO NIRCam grism spectroscopy and JADES medium-band imaging. …
Diverse Oxygen Abundance in Early Galaxies Unveiled by Auroral Line Analysis with JWST
Stiavelli, Massimo; Treu, Tommaso; Trenti, Michele +10 more
We present deep JWST NIRSpec observations in the sight line of MACS J1149.5+2223, a massive cluster of galaxies at z = 0.54. We report the spectroscopic redshift of 28 sources at 3 < z < 9.1, including nine sources with the detection of the