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View article: Cosmic stillness: high quiescent galaxy fractions across upper mass scales in the early Universe to <i>z</i> = 7 with <i>JWST</i>
Cosmic stillness: high quiescent galaxy fractions across upper mass scales in the early Universe to <i>z</i> = 7 with <i>JWST</i> Open
We present a detailed investigation into the abundance and morphology of high-redshift quenched galaxies at $3 < z < 7$ using James Webb Space Telescope data in the NEP, CEERS, and JADES fields. Within these fields, we identify 90 ca…
View article: <i>JWST</i> s PEARLS: NIRCam imaging and NIRISS spectroscopy of a <i>z</i> = 3.6 star-forming galaxy lensed into a near-Einstein ring by a <i>z</i> = 1.258 massive elliptical galaxy
<i>JWST</i> s PEARLS: NIRCam imaging and NIRISS spectroscopy of a <i>z</i> = 3.6 star-forming galaxy lensed into a near-Einstein ring by a <i>z</i> = 1.258 massive elliptical galaxy Open
We present the discovery, and initial lensing analysis, of a high-redshift galaxy–galaxy lensing system within the JWST-PEARLS/HST–TREASUREHUNT North Ecliptic Pole Time Domain Field (designated NEPJ172238.9+655143.1). The lensing geometry …
View article: JWST’s PEARLS: A <i>z</i> ≃ 6 quasar in a train-wreck galaxy merger system
JWST’s PEARLS: A <i>z</i> ≃ 6 quasar in a train-wreck galaxy merger system Open
We present JWST NIRSpec integral field spectroscopy observations of the z = 5.89 quasar NDWFS J1425+3254 from 0.6–5.3 μm, covering the rest-frame ultraviolet and optical at a spectral resolution of R ∼ 100. The quasar has a black hole mass…
View article: Self-consistent JWST Census of Star Formation and AGN Activity at <i>z</i> = 5.5–13.5
Self-consistent JWST Census of Star Formation and AGN Activity at <i>z</i> = 5.5–13.5 Open
The cosmic star formation history (CSFH) and cosmic active galactic nuclei (AGN) luminosity history (CAGNH) are self consistently measured at z = 5.5–13.5. This is achieved by analyzing galaxies detected by the James Webb Space Telescope f…
View article: Lonely Little Red Dots: Challenges to the Active Galactic Nucleus Nature of Little Red Dots through Their Clustering and Spectral Energy Distributions
Lonely Little Red Dots: Challenges to the Active Galactic Nucleus Nature of Little Red Dots through Their Clustering and Spectral Energy Distributions Open
Observations with the James Webb Space Telescope reveal a previously unseen population of compact red objects, known as “little red dots” (LRDs). We study a new photometrically selected sample of 124 LRDs in the redshift range z ∼ 3–10 sel…
View article: Peering into the Heart of Darkness with VLBA: Radio-quiet Active Galactic Nucleus in the JWST North Ecliptic Pole Time-domain Field
Peering into the Heart of Darkness with VLBA: Radio-quiet Active Galactic Nucleus in the JWST North Ecliptic Pole Time-domain Field Open
We present initial results from the 4.8 GHz Very Long Baseline Array (VLBA) survey of the JWST North Ecliptic Pole Time-Domain Field (TDF). From 106 radio sources found in the Karl G. Jansky Very Large Array (VLA) observations in the TDF, …
View article: Dissecting Reionisation with the Cosmic Star Formation and Active Galactic Nuclei Luminosity History
Dissecting Reionisation with the Cosmic Star Formation and Active Galactic Nuclei Luminosity History Open
The combination of the $z=0-13.5$ cosmic star formation history and active galactic nuclei (AGN) luminosity history as inferred by the James Webb Space Telescope is connected to the cosmic spectral energy distribution (CSED) to explore the…
View article: PEARLS: Twenty-One Transients Found in the Three-Epoch NIRCam Observations in the Continuous Viewing Zone of the James Webb Space Telescope
PEARLS: Twenty-One Transients Found in the Three-Epoch NIRCam Observations in the Continuous Viewing Zone of the James Webb Space Telescope Open
We present 21 infrared transients found in our three-epoch, four-band NIRCam observations covering 14.16 arcmin^2 in the Spitzer IRAC Dark Field (IDF), taken by the JWST Prime Extragalactic Areas for Reionization and Lensing Science (PEARL…
View article: The Tale of Two Telescopes: How Hubble Uniquely Complements the James Webb Space Telescope: Galaxies
The Tale of Two Telescopes: How Hubble Uniquely Complements the James Webb Space Telescope: Galaxies Open
View article: Galaxy mergers in the epoch of reionization – I. A JWST study of pair fractions, merger rates, and stellar mass accretion rates at <i>z</i> = 4.5–11.5
Galaxy mergers in the epoch of reionization – I. A JWST study of pair fractions, merger rates, and stellar mass accretion rates at <i>z</i> = 4.5–11.5 Open
We present a full analysis of galaxy major merger pair fractions, merger rates, and mass accretion rates, thus uncovering the role of mergers in galaxy formation at the earliest previously unexplored epoch of $4.5< z< 11.5$. We targe…
View article: EPOCHS. XI. The Structure and Morphology of Galaxies in the Epoch of Reionization to <i>z</i> ∼ 12.5
EPOCHS. XI. The Structure and Morphology of Galaxies in the Epoch of Reionization to <i>z</i> ∼ 12.5 Open
We present a structural analysis of 520 galaxy candidates at 6.5 < z < 12.5 with a signal-to-noise ratio of >10 σ in the F444W filter taken from the EPOCHS v1 sample, consisting of uniformly reduced deep JWST NIRCam data covering the CEERS…
View article: EPOCHS. I. The Discovery and Star-forming Properties of Galaxies in the Epoch of Reionization at 6.5 < <i>z</i> < 18 with PEARLS and Public JWST Data
EPOCHS. I. The Discovery and Star-forming Properties of Galaxies in the Epoch of Reionization at 6.5 < <i>z</i> < 18 with PEARLS and Public JWST Data Open
We present in this paper the discovery, properties, and a catalog of 1165 high-redshift 6.5 < z < 18 galaxies found in deep JWST NIRCam imaging from the GTO PEARLS survey combined with data from JWST public fields. We describe our bespoke …
View article: The Hubble Ultra Deep Field in Blue
The Hubble Ultra Deep Field in Blue Open
False color image of the Hubble Ultra Deep Field in the 8 bluest Hubble Space Telescope-unique filters (WFC3/UVIS F225W, F275W, and F336W and ACS/WFC F435W, F606W, F775W, F814W and F850LP), all noise-weighted and rendered only in blue. Thi…
View article: Self-Consistent JWST Census of Star Formation and AGN activity at z=5.5-13.5
Self-Consistent JWST Census of Star Formation and AGN activity at z=5.5-13.5 Open
The cosmic star formation history (CSFH) and cosmic active galactic nuclei (AGN) luminosity history (CAGNH) are self consistently measured at $z = 5.5-13.5$. This is achieved by analyzing galaxies detected by the James Webb Space Telescope…
View article: EPOCHS XI: The Structure and Morphology of Galaxies in the Epoch of Reionization to z ~ 12.5
EPOCHS XI: The Structure and Morphology of Galaxies in the Epoch of Reionization to z ~ 12.5 Open
We present a structural analysis of 521 galaxy candidates at 6.5 < z < 12.5, with $SNR > 10σ$ in the F444W filter, taken from the EPOCHS v1 sample, consisting of uniformly reduced deep JWST NIRCam data, covering the CEERS, JADES GOOD-S, NG…
View article: Cosmic Stillness: High Quiescent Galaxy Fractions Across Upper Mass Scales in the Early Universe to z = 7 with JWST
Cosmic Stillness: High Quiescent Galaxy Fractions Across Upper Mass Scales in the Early Universe to z = 7 with JWST Open
We present a detailed investigation into the abundance and morphology of high redshift quenched galaxies at $3 < z < 7$ using James Webb Space Telescope data in the NEP, CEERS and JADES fields. Within these fields, we identify 90 candidate…
View article: Galaxy Mergers in the Epoch of Reionization II: Major Merger-Triggered Star Formation and AGN Activities at $z =$ 4.5-8.5
Galaxy Mergers in the Epoch of Reionization II: Major Merger-Triggered Star Formation and AGN Activities at $z =$ 4.5-8.5 Open
Galaxy mergers are a key driver of galaxy formation and evolution, including the triggering of AGN and star formation to a still unknown degree. We thus investigate the impact of galaxy mergers on star formation and AGN activity using a sa…
View article: JWST View of Four Infant Galaxies at z = 8.31–8.49 in the MACS J0416.1−2403 Field and Implications for Reionization
JWST View of Four Infant Galaxies at z = 8.31–8.49 in the MACS J0416.1−2403 Field and Implications for Reionization Open
New JWST/NIRCam wide-field slitless spectroscopy provides redshifts for four z > 8 galaxies located behind the lensing cluster MACS J0416.1−2403. Two of them, “Y1” and “JD,” have previously reported spectroscopic redshifts based on Atacama…
View article: PEARLS: Discovery of Point-source Features within Galaxies in the North Ecliptic Pole Time Domain Field
PEARLS: Discovery of Point-source Features within Galaxies in the North Ecliptic Pole Time Domain Field Open
The first public 0.9–4.4 μ m NIRCam images of the North Ecliptic Pole Time Domain Field uncovered galaxies displaying point-source features in their cores as seen in the longer-wavelength filters. We visually identified a sample of 66 gala…
View article: Birds of a Feather: Resolving Stellar Mass Assembly with JWST/NIRCam in a Pair of Kindred z ∼ 2 Dusty Star-forming Galaxies Lensed by the PLCK G165.7+67.0 Cluster
Birds of a Feather: Resolving Stellar Mass Assembly with JWST/NIRCam in a Pair of Kindred z ∼ 2 Dusty Star-forming Galaxies Lensed by the PLCK G165.7+67.0 Cluster Open
We present a new parametric lens model for the G165.7+67.0 galaxy cluster, which was discovered with Planck through its bright submillimeter flux, originating from a pair of extraordinary dusty star-forming galaxies (DSFGs) at z ≈ 2.2. Usi…
View article: JWST’s PEARLS: 119 multiply imaged galaxies behind MACS0416, lensing properties of caustic crossing galaxies, and the relation between halo mass and number of globular clusters at <i>z</i> = 0.4
JWST’s PEARLS: 119 multiply imaged galaxies behind MACS0416, lensing properties of caustic crossing galaxies, and the relation between halo mass and number of globular clusters at <i>z</i> = 0.4 Open
We present a new lens model for the ɀ = 0.396 galaxy cluster MACS J0416.1 –2403 based on a previously known set of 77 spectroscop-ically confirmed, multiply imaged galaxies plus an additional set of 42 candidate multiply imaged galaxies fr…
View article: JWST’s PEARLS: Resolved study of the stellar and dust components in starburst galaxies at cosmic noon
JWST’s PEARLS: Resolved study of the stellar and dust components in starburst galaxies at cosmic noon Open
Dusty star-forming galaxies (DSFGs) significantly contribute to the stellar buildup in galaxies during “cosmic noon,” the peak epoch of cosmic star formation. Major mergers and gas accretion are often invoked to explain DSFGs’ prodigious s…
View article: EPOCHS I. The Discovery and Star Forming Properties of Galaxies in the Epoch of Reionization at $6.5 < z < 18$ with PEARLS and Public JWST data
EPOCHS I. The Discovery and Star Forming Properties of Galaxies in the Epoch of Reionization at $6.5 < z < 18$ with PEARLS and Public JWST data Open
We present in this paper the discovery, properties, and a catalog of 1165 high redshift $6.5 < z < 18$ galaxies found in deep JWST NIRCam imaging from the GTO PEARLS survey combined with data from JWST public fields. We describe our bespok…
View article: New Spectroscopic Redshift Places PEARLSDG in a Group at ∼124 Mpc
New Spectroscopic Redshift Places PEARLSDG in a Group at ∼124 Mpc Open
PEARLSDG was previously reported as an isolated dwarf galaxy with a TRGB distance of 30 Mpc. New data show this to not be the case. We report a new spectroscopic redshift of 0.02809, which argues for an association with a group of galaxies…
View article: Galaxy Mergers in the Epoch of Reionization I: A JWST Study of Pair Fractions, Merger Rates, and Stellar Mass Accretion Rates at $z = 4.5-11.5$
Galaxy Mergers in the Epoch of Reionization I: A JWST Study of Pair Fractions, Merger Rates, and Stellar Mass Accretion Rates at $z = 4.5-11.5$ Open
We present a full analysis of galaxy major merger pair fractions, merger rates, and mass accretion rates, thus uncovering the role of mergers in galaxy formation at the earliest previously unexplored epoch of $4.5
View article: JWST view of four infant galaxies at z=8.31-8.49 in the MACS0416 field and implications for reionization
JWST view of four infant galaxies at z=8.31-8.49 in the MACS0416 field and implications for reionization Open
New JWST/NIRCam wide-field slitless spectroscopy provides redshifts for four z>8 galaxies located behind the lensing cluster MACS J0416.1-2403. Two of them, "Y1" and "JD", have previously reported spectroscopic redshifts based on ALMA meas…
View article: Lensed Type Ia Supernova “Encore” at z = 2: The First Instance of Two Multiply Imaged Supernovae in the Same Host Galaxy
Lensed Type Ia Supernova “Encore” at z = 2: The First Instance of Two Multiply Imaged Supernovae in the Same Host Galaxy Open
A bright ( m F150W,AB = 24 mag), z = 1.95 supernova (SN) candidate was discovered in JWST/NIRCam imaging acquired on 2023 November 17. The SN is quintuply imaged as a result of strong gravitational lensing by a foreground galaxy cluster, d…
View article: JWST Photometric Time-delay and Magnification Measurements for the Triply Imaged Type Ia “SN H0pe” at z = 1.78
JWST Photometric Time-delay and Magnification Measurements for the Triply Imaged Type Ia “SN H0pe” at z = 1.78 Open
Supernova (SN) SN H0pe is a gravitationally lensed, triply imaged, Type Ia SN (SN Ia) discovered in James Webb Space Telescope imaging of the PLCK G165.7+67.0 cluster of galaxies. Well-observed multiply imaged SNe provide a rare opportunit…
View article: TREASUREHUNT: Transients and Variability Discovered with HST in the JWST North Ecliptic Pole Time-domain Field
TREASUREHUNT: Transients and Variability Discovered with HST in the JWST North Ecliptic Pole Time-domain Field Open
The James Webb Space Telescope (JWST) North Ecliptic Pole (NEP) Time-domain Field (TDF) is a >14′ diameter field optimized for multiwavelength time-domain science with JWST. It has been observed across the electromagnetic spectrum both fro…
View article: EPOCHS III: Unbiased UV continuum slopes at 6.5
EPOCHS III: Unbiased UV continuum slopes at 6.5 Open
We present an analysis of rest-frame UV continuum slopes, $β$, using a sample of 1011 galaxies at $6.5