441 citations · 5.7k across the 160 of their papers we have counts for
17 papers · 1 filter
UV Luminosity Density Results at z>8 from the First JWST/NIRCam Fields: Limitations of Early Data Sets and the Need for Spectroscopy
Rychard Bouwens, Garth Illingworth, Pascal Oesch +4
We have derived luminosity functions, and set constraints on the UV luminosity and SFR density from z~17 to z~8, using the three most-studied JWST/NIRCam data sets, the SMACS0723,…
Distant Echoes of the Milky Way's Last Major Merger
Vedant Chandra, Rohan P. Naidu, Charlie Conroy +9
The majority of the Milky Way's stellar halo consists of debris from our Galaxy's last major merger, the Gaia-Sausage-Enceladus (GSE). In the past few years, stars from GSE have be…
What is Missing from the Local Stellar Halo?
Katherine Sharpe, Rohan P. Naidu, Charlie Conroy
The Milky Way's stellar halo, which extends to kpc, encodes the evolutionary history of our Galaxy. However, most studies of the halo to date have been limited to within a f…
Evolution of the UV LF from z~15 to z~8 Using New JWST NIRCam Medium-Band Observations over the HUDF/XDF
Rychard J. Bouwens, Mauro Stefanon, Gabriel Brammer +7
We present the first constraints on the prevalence of z>10 galaxies in the Hubble Ultra Deep Field (HUDF) leveraging new NIRCam observations from JEMS (JWST Extragalactic Medium-ba…
Dwarf galaxy archaeology from chemical abundances and star formation histories
James W. Johnson, Charlie Conroy, Benjamin D. Johnson +8
We model the stellar abundances and ages of two disrupted dwarf galaxies in the Milky Way stellar halo: Gaia-Sausage Enceladus (GSE) and Wukong/LMS-1. Using a statistically robust…
The Poor Old Heart of the Milky Way
Hans-Walter Rix, Vedant Chandra, René Andrae +9
Massive disk galaxies like our Milky Way should host an ancient, metal-poor, and centrally concentrated stellar population. This population reflects the star formation and enrichme…
First look with JWST spectroscopy: galaxies resemble local analogues
D. Schaerer, R. Marques-Chaves, L. Barrufet +5
Deep images and near-IR spectra of galaxies in the field of the lensing cluster SMACS J0723.3-7327 were recently taken in the Early Release Observations program of JWST. Among thes…
The Stellar Halo of the Galaxy is Tilted & Doubly Broken
Jiwon Jesse Han, Charlie Conroy, Benjamin D. Johnson +7
Modern Galactic surveys have revealed an ancient merger that dominates the stellar halo of our Galaxy (\textit{Gaia}-Sausage-Enceladus, GSE). Using chemical abundances and kinemati…
Schrodinger's Galaxy Candidate: Puzzlingly Luminous at , or Dusty/Quenched at ?
Rohan P. Naidu, Pascal A. Oesch, David J. Setton +22
's first glimpse of the Universe has yielded a surprising abundance of luminous galaxy candidates. Here we present the most extreme of these systems: CEERS-1749. Based…
Unveiling the Nature of Infrared Bright, Optically Dark Galaxies with Early JWST Data
L. Barrufet, P. A. Oesch, A. Weibel +18
Over the last few years, both ALMA and Spitzer/IRAC observations have revealed a population of likely massive galaxies at that was too faint to be detected in HST rest-frame…
A Ghost in Boötes: The Least Luminous Disrupted Dwarf Galaxy
Vedant Chandra, Charlie Conroy, Nelson Caldwell +9
We report the discovery of Specter, a disrupted ultrafaint dwarf galaxy revealed by the H3 Spectroscopic Survey. We detected this structure via a pair of comoving metal-poor stars…
Two Remarkably Luminous Galaxy Candidates at Revealed by JWST
Rohan P. Naidu, Pascal A. Oesch, Pieter van Dokkum +22
The first few hundred Myrs at mark the last major uncharted epoch in the history of the Universe, where only a single galaxy (GNz11 at ) is currently spectroscop…
Chemical Abundances of the Typhon Stellar Stream
Alexander P. Ji, Rohan P. Naidu, Kaley Brauer +2
We present the first high-resolution chemical abundances of seven stars in the recently discovered high-energy stream Typhon. Typhon stars have apocenters >100 kpc, making this the…
No Evolution in the Half-mass Radius of Milky Way-type Galaxies over the Last 10 Gyr
Maryam Hasheminia, Moein Mosleh, Sandro Tacchella +3
The Milky Way (MW) galaxy is in focus, thanks to new observational data. Here we shed new light on the MW's past by studying the structural evolution of MW progenitors, which we id…
Live Fast, Die -Enhanced: The Mass-Metallicity- Relation of the Milky Way's Disrupted Dwarf Galaxies
Rohan P. Naidu, Charlie Conroy, Ana Bonaca +9
The Milky Way's satellite galaxies ("surviving dwarfs") have been studied for decades as unique probes of chemical evolution in the low-mass regime. Here we extend such studies to…
Birth of the Galactic Disk Revealed by the H3 Survey
Charlie Conroy, David H. Weinberg, Rohan P. Naidu +12
We use chemistry ([alpha/Fe] and [Fe/H]), main sequence turnoff ages, and kinematics determined from H3 Survey spectroscopy and Gaia astrometry to identify the birth of the Galacti…
A Tilt in the Dark Matter Halo of the Galaxy
Jiwon Jesse Han, Rohan P. Naidu, Charlie Conroy +9
Recent observations of the stellar halo have uncovered the debris of an ancient merger, Gaia-Sausage-Enceladus, estimated to have occurred ~8 Gyr ago. Follow-up studies have associ…