L. Mowla

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…

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 $0.6 < z \leq 4$

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…

A Population of Red Galaxies with Very Strong Emission Lines at $z > 5$ Revealed by the NIRCam Medium Bands: ''Classic'' LRDs, Dusty Star-Forming Galaxies, and a Missing Population of LRDs

Sunna Withers, Adam Muzzin, Swara Ravindranath +16

The NIRCam medium-bands have proven to be efficient at identifying Emission Line Galaxies (ELGs) with high equivalent width (EW) H $α$ and [OIII]+H $β$ emission lines. In this paper…

GalSyn I: A Forward-Modeling Code for Synthetic Galaxy Observations from Hydrodynamical Simulations and First Data Release from IllustrisTNG

Abdurro'uf, Henry C. Ferguson, Samir Salim +9

We present GalSyn (Galaxy Synthesizer), a modular and flexible Python package for generating synthetic observations from hydrodynamical galaxy simulations. GalSyn generates synthet…

Everything Every Band All at Once I: A Global Morphology Catalog in Abell 2744 based on UNCOVER/MegaScience

Yunchong Zhang, Tim B. Miller, Sedona H. Price +31

We present spectrally-resolved structural parameter measurements of 28,274 sources from the legacy lensing field of Abell 2744, quantifying global structures from observed $0.7 μm…

astro-ph.GA2025★ 2 cited

Spatially Resolved Physical Properties of Young Star Clusters and Star-forming Clumps in the Brightest z>6 Galaxy, the Strongly Lensed Cosmic Spear at z=6.2

Abdurro'uf, Dan Coe, Tom Resseguier +49

We present spatially resolved analysis of stellar populations in the brightest $z > 6$ galaxy known to date (AB mag 23), the strongly lensed MACS0308 $-$ zD1 (dubbed the ``Cosmic Spear…

VENUS: A Strongly Lensed Clumpy Galaxy at $z \sim 11 - 12$ behind the Galaxy Cluster MACS J0257.1-2325

Minami Nakane, Vasily Kokorev, Seiji Fujimoto +75

We present the discovery of a strongly lensed galaxy at $z \sim 11 - 12$ , dubbed the ``Misty Moons'', identified in the JWST Treasury Survey, Vast Exploration for Nascent, Unexplored S…

astro-ph.GA2025

Finding the boundary: Using galaxy membership to inform galaxy cluster extent through machine learning

Christine Hao, Stephanie O'Neil, Mark Vogelsberger +3

The spatial extent of the environment's impact on galaxies marks a transitional region between cluster and field galaxies. We present a data-driven method to identify this region i…

astro-ph.GA2025★ 2 cited

Star Formation under a Cosmic Microscope: Highly magnified z = 11 galaxy behind the Bullet Cluster

Maruša Bradač, Jon Judež, Chris Willott +20

We present measurements of stellar population properties of a newly discovered spectroscopically confirmed $z = 11.1 0_{- 0.26}^{+ 0.11}$ , gravitationally lensed galaxy, using JWST NIRS…

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…

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 (…

In Search of the First Stars: An Ultra-Compact and Very Low Metallicity Lyman- $α$ Emitter Deep Within the Epoch of Reionization

Chris J. Willott, Yoshihisa Asada, Kartheik G. Iyer +16

We present {\it JWST} observations of a gravitationally-lensed, extremely metal-poor galaxy at redshift $z = 8.203 \pm 0.001$ from the CANUCS survey. Based on the low oxygen to Balmer…

astro-ph.GA2024★ 11 cited

Discovery of Ancient Globular Cluster Candidates in the Relic, a Quiescent Galaxy at $z = 2.5$

Katherine E. Whitaker, Sam E. Cutler, Rupali Chandar +31

Globular clusters (GCs) are some of the oldest bound structures in the Universe, holding clues to the earliest epochs of star formation and galaxy assembly. However, accurate age m…

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 $z = 5$ 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 $0.3 < z < 5$ selected with abundance matching in the ten fields of the Canadian NIRISS Unbiased Cluster S…

Detailed Study of Stars and Gas in a z = 8.3 Massive Merger with Extreme Dust Conditions

Anishya Harshan, Roberta Tripodi, Nicholas S. Martis +15

We present galaxy MACS0416-Y1 at z $_{spec} = 8.312$ as observed by the CAnadian NIRISS Unbiased Cluster Survey (CANUCS). MACS0416-Y1 has been shown to have extreme dust proper…

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…

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.GA2024★ 1 cited

Medium Bands, Mega Science: a JWST/NIRCam Medium-Band Imaging Survey of Abell 2744

Katherine A. Suess, John R. Weaver, Sedona H. Price +39

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 s…

astro-ph.GA2024★ 14 cited

Katachi: Decoding the Imprints of Past Star Formation on Present Day Morphology in Galaxies with Interpretable CNNs

Juan Pablo Alfonzo, Kartheik G. Iyer, Masayuki Akiyama +8

The physical processes responsible for shaping how galaxies form and quench over time leave imprints on both the spatial (galaxy morphology) and temporal (star formation history; S…

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…