activity
20232026
most citedCANUCS: Constraining the MACS J0416.1-2403 Strong Lensing Model with JWST NIRISS, NIRSpec and NIRCam

15 citations · 55 across the 24 of their papers we have counts for

collaborators

24 papers

astro-ph.GA2026

A New Window on the Hα Luminosity Function and Star Formation Rate Density from 1.2 < z < 6.6 from JWST Medium-Band Photometry

Nicholas S. Martis, Chris Willott, Gregor Rihtaršič +23

We present the first self-consistent measurement of the Hα luminosity function over a wide redshift range, covering cosmic noon into the epoch of reionization. Our analysis utilize…

astro-ph.GA2026

Interaction-induced star formation boosts stellar mass assembly in galaxies

Kiyoaki C. Omori, Marcin Sawicki, Rosa M. Mérida +10

Galaxy interactions are a key ingredient in galaxy evolution; not only are they a primary pathway of galaxy growth and mass assembly, but also a key driver of processes such as sta…

astro-ph.GA2026

Resolved Ages and Stellar Metallicities in Progenitors of Milky Way Analogs: A Closer Look at their Star Formation Histories since

Vivian Yun Yan Tan, Adam Muzzin, Naadiyah Jagga +12

We present the evolution of the resolved mass-weighted age, stellar metallicity, and sSFR of 872 Milky Way Analog (MWA) progenitors up to redshift from the Canadian Unbiased…

astro-ph.GA2026

CANUCS/Technicolor Data Release 2: A Catalogue of Galaxy Structural Parameters in up to 29 HST+JWST bands and a Multi-Wavelength Exploration of the Galaxy Size-Mass Relation at

Maya Merchant, Lamiya A. Mowla, Georgios E. Magdis +23

We present James Webb Space Telescope (JWST) results of a morphological study of galaxies in the CAnadian NIRISS Unbiased Cluster (CANUCS) and Technicolor surveys, observed in 19 m…

astro-ph.GA2026

Metal-Poor Gas Accretion Drives Giant Clump Formation at 0.6 < z < 2.6

Visal Sok, Adam Muzzin, Ben Forrest +20

The physical properties of kiloparsec-scale clumps in high-redshift star-forming galaxies (SFGs) contain crucial constraints on how they assemble. Building on recent work that indi…

astro-ph.GA2026

UV slopes of Starforming Galaxies in Strong Lensing fields at the Epoch of Reionization with JWST

Giordano Felicioni, Maruša Bradač, Yoshihisa Asada +20

UV slopes () are a powerful diagnostics for galaxies at the Epoch of Reionization, tracing star formation, ISM ionization, and the escape fraction of ionizing photons.…

astro-ph.GA2025

An Ancient Descendant of the First Galaxies

Jacqueline Antwi-Danso, Adam Muzzin, Luke Robbins +18

JWST has revealed unexpectedly bright galaxies in the first 500 Myr after the Big Bang. Their overabundance suggests that they are preferentially observed during burst phases, wher…

astro-ph.GA2025

Metal-Poor Star-Forming Clumps in Cosmic Noon Galaxies: Evidence for Gas Inflow and Chemical Dilution Using JWST NIRISS

Vicente Estrada-Carpenter, Marcin Sawicki, Roberto Abraham +16

The formation and evolution of galaxies are intricately linked to the baryon cycle, which fuels star formation while shaping chemical abundances within galaxies. Investigating the…

astro-ph.GA2025★ 2 cited

MINERVA: A NIRCam Medium Band and MIRI Imaging Survey to Unlock the Hidden Gems of the Distant Universe

Adam Muzzin, Katherine A. Suess, Danilo Marchesini +81

We present an overview of the MINERVA survey, a 259.8 hour (prime) and 127 hour (parallel) Cycle 4 treasury program on the James Webb Space Telescope (JWST). MINERVA is obtaining 8…

astro-ph.GA2025★ 1 cited

CANUCS/Technicolor Data Release 1: Imaging, Photometry, Slit Spectroscopy, and Stellar Population Parameters

Ghassan T. E. Sarrouh, Yoshihisa Asada, Nicholas S. Martis +44

We present the first data release of the CAnadian NIRISS Unbiased Cluster Survey (CANUCS), a JWST Cycle 1 GTO program targeting 5 lensing clusters and flanking fields in parallel (…

astro-ph.GA2025

CANUCS/Technicolor: JWST Medium Band Photometry Finds Half of the Star Formation at is Obscured

Nicholas Martis, Sunna Withers, Giordano Felicioni +19

We present a sample of 146 high-redshift () galaxies from the CANUCS/Technicolor surveys, showcasing photometry in every wide- and medium-band NIRCam filter in addition to a…

astro-ph.GA2024★ 7 cited

Red, hot, and very metal poor: extreme properties of a massive accreting black hole in the first 500 Myr

Roberta Tripodi, Nicholas Martis, Vladan Markov +29

The James Webb Space Telescope (JWST) has recently discovered a new population of objects at high redshift referred to as `Little Red Dots' (LRDs). Their nature currently remains e…

astro-ph.GA2024★ 4 cited

Resolved mass assembly and star formation in Milky Way Progenitors since from JWST/CANUCS: From clumps and mergers to well-ordered disks

Vivian Yun Yan Tan, Adam Muzzin, Ghassan T. E. Sarrouh +17

We present a resolved study of 877 progenitors of Milky Way Analogs (MWAs) at selected with abundance matching in the ten fields of the Canadian NIRISS Unbiased Cluster S…

astro-ph.GA2024

CANUCS: UV and Ionising Properties of Dwarf Star Forming Galaxies at z = 5 to 7

Anishya Harshan, Maruša Bradač, Roberto Abraham +14

The epoch of reionisation progressed through the emission of ionising photons from galaxies to their local intergalactic medium. In this work, we characterise the dwarf star-formin…

astro-ph.GA2024

When, Where, and How Star Formation Happens in a Galaxy Pair at Cosmic Noon Using CANUCS JWST/NIRISS Grism Spectroscopy

Vicente Estrada-Carpenter, Marcin Sawicki, Gabe Brammer +13

Spatially resolved studies are key to understanding when, where, and how stars form within galaxies. Using slitless grism spectra and broadband imaging from the CAnadian NIRISS Unb…

astro-ph.CO2024★ 15 cited

CANUCS: Constraining the MACS J0416.1-2403 Strong Lensing Model with JWST NIRISS, NIRSpec and NIRCam

Gregor Rihtaršič, Maruša Bradač, Guillaume Desprez +18

(Abridged) The strong lensing models of galaxy clusters rely on the number and quality of multiple images with spectroscopic redshifts. We present an updated strong lensing model o…

astro-ph.GA2024★ 3 cited

Deep HST/UVIS imaging of the candidate dark galaxy CDG-1

Pieter van Dokkum, Dayi David Li, Roberto Abraham +4

CDG-1 is a tight grouping of four likely globular clusters in the Perseus cluster, and a candidate dark galaxy with little or no diffuse light. Here we provide new constraints on t…

astro-ph.GA2024★ 14 cited

The Firefly Sparkle: The Earliest Stages of the Assembly of A Milky Way-type Galaxy in a 600 Myr Old Universe

Lamiya Mowla, Kartheik Iyer, Yoshihisa Asada +19

The most distant galaxies detected by JWST are assembling in a Universe that is less than 5\% of its present age. At these times, the progenitors of galaxies like the Milky Way are…

astro-ph.GA2024

Exposing Line Emission: A First Look At The Systematic Differences of Measuring Stellar Masses With JWST NIRCam Medium Versus Wide Band Photometry

Ghassan T. Sarrouh, Adam Muzzin, Kartheik G. Iyer +13

Photometrically derived stellar masses are known to suffer from systematic uncertainties, particularly due to nebular emission contributions to the spectral energy distribution. Us…

astro-ph.GA2024★ 2 cited

Modelling and Subtracting Diffuse Cluster Light in JWST Images: A Relation between the Spatial Distribution of Globular Clusters, Dwarf Galaxies, and Intracluster Light in the Lensing Cluster SMACS 0723

Nicholas S. Martis, Ghassan T. E. Sarrouh, Chris J. Willott +9

We present a methodology for modeling and removing light from cluster galaxies and intracluster light (ICL) from () images of gravitational le…

astro-ph.GA2023★ 5 cited

A Steep Decline in the Galaxy Space Density Beyond Redshift 9 in the CANUCS UV Luminosity Function

Chris J. Willott, Guillaume Desprez, Yoshihisa Asada +15

We present a new sample of 158 galaxies at redshift selected from deep \jwst\ NIRCam imaging of five widely-separated sightlines in the CANUCS survey. Two-thirds of the poi…

astro-ph.GA2023★ 1 cited

Detection of Accretion Shelves Out to the Virial Radius of a Low-Mass Galaxy with JWST

Charlie Conroy, Benjamin D. Johnson, Pieter van Dokkum +8

We report the serendipitous discovery of an extended stellar halo surrounding the low-mass galaxy Ark 227 (; d=35 Mpc) in deep JWST NIRCam imaging from…

astro-ph.GA2023★ 1 cited

CDM not dead yet: massive high-z Balmer break galaxies are less common than previously reported

Guillaume Desprez, Nicholas S. Martis, Yoshihisa Asada +15

Early JWST observations that targeted so-called double-break sources (attributed to Lyman and Balmer breaks at ), reported a previously unknown population of very massive, evo…

astro-ph.GA2023

Bursty star formation and galaxy-galaxy interactions in low-mass galaxies 1 Gyr after the Big Bang

Yoshihisa Asada, Marcin Sawicki, Roberto Abraham +14

We use CANUCS JWST/NIRCam imaging of galaxies behind the gravitationally-lensing cluster MACS J0417.5-1154 to investigate star formation burstiness in low-mass ($M_\star\sim10^8\ M…