activity
20222026
most citedExtreme N-emitters at high-redshift: signatures of supermassive stars and globular cluster or black hole formation in action?

100 citations · 177 across the 23 of their papers we have counts for

collaborators

23 papers

astro-ph.GA2026

Search for High-Ionization Nebular Emission (SHINE). I. A Systematically Selected [Ne V] Sample at z > 3 with JWST/NIRSpec PRISM

Shobita Satyapal, Sara Doan, Daniel Schaerer +8

We conduct the first systematic Search for High-Ionization Nebular Emission (SHINE) using [Ne V] in JWST/NIRSpec PRISM spectroscopy at . From more than 9,000 gala…

astro-ph.GA2026

Tracing the Evolution of the Balmer Break from Cosmic Dawn to Cosmic Noon with JWST

Adarsh Kuruvanthodi, Daniel Schaerer, Rui Marques-Chaves +3

The Balmer break (BB) is a key spectral feature for constraining stellar population ages, star formation histories, and redshifts of high-redshift sources. The redshift evolution a…

astro-ph.GA2026

Other red dots: A possible GLIMPSE of normal AGB stars at Cosmic Noon through extreme lensing

Lukas J. Furtak, Adi Zitrin, Erik Zackrisson +18

We report the discovery of four extremely faint () red point sources in recent ultra-deep JWST/NIRCam images of the strong lensing galaxy cluster Abell…

astro-ph.GA2026

A Glimpse of the Low-Mass End of the Direct Mass-Metallicity Relation at

Tiger Yu-Yang Hsiao, John Chisholm, Danielle A. Berg +22

The competition between metal synthesis and feedback from massive stars establishes the mass-metallicity relation (MZR) at low-redshifts. Examining this relation at higher redshift…

astro-ph.GA2026

GLIMPSED: Direct evidence for a fast active galactic nucleus-driven outflow from a z=6.64 little red dot host galaxy

Damien Korber, Rui Marques-Chaves, Daniel Schaerer +15

We report the discovery of GLIMPSED-329380, a z=6.64 galaxy behind Abell S1063, which shows signs of an extreme ionised outflow driven by an active galactic nucleus (AGN). The deep…

astro-ph.GA2026

A GLIMPSE of the 99%: a census of the faintest galaxies during the epoch of reionization and its implications for galaxy formation models

Hakim Atek, Iryna Chemerynska, Lukas J. Furtak +19

We present a comprehensive study of the galaxy UV luminosity function (UVLF) at leveraging deep JWST observations from the GLIMPSE survey. Thanks to gravitational lensing,…

astro-ph.GA2026★ 2 cited

A first GLIMPSE into star clusters populations across cosmic time

Adélaïde Claeyssens, Angela Adamo, Vasily Kokorev +12

We present the first sample of 222 high-redshift (z>0.5) star clusters, detected with JWST/NIRCam in 78 magnified galaxies from different galaxy cluster fields. The majority of the…

astro-ph.GA2026

GLIMPSE-DDT spectroscopic properties of faint-end galaxies at : Towards first metal enrichment, dust production, and ionizing photon production

Yoshihisa Asada, Seiji Fujimoto, John Chisholm +16

Ultra-faint galaxies at high- are fundamental elements of the early galaxy assembly, and spectroscopic characterization of this population is essential to understand the earlies…

astro-ph.GA2026

A GLIMPSE into the UV Continuum Slopes of the Faintest Galaxies in the Epoch of Reionization

Michelle C. Jecmen, John Chisholm, Hakim Atek +23

As observations have yet to constrain the ionizing properties of the faintest (M > -16) galaxies, their contribution to cosmic reionization remains unclear. The rest-fra…

astro-ph.GA2026★ 1 cited

GLIMPSE-D: Metallicity Decline in Faint Galaxies: Implications for [O III]+Hb Luminosity Function and Reionisation Budget

Damien Korber, Daniel Schaerer, Rui Marques-Chaves +13

We report the measurement of the R3=[O III]5008/Hb ratios for 54 galaxies in the GLIMPSE-D survey. Thanks to gravitational lensing, our sample includes galaxies with -20 < Muv < -1…

astro-ph.GA2025

GLIMPSE-D: An Exotic Balmer-Jump Object at z=6.20? Revisiting Photometric Selection and the Cosmic Abundance of Pop III Galaxies

Seiji Fujimoto, Yoshihisa Asada, Rohan P. Naidu +19

We present deep JWST/NIRSpec G395M spectroscopy of GLIMPSE-16043, a promising Pop III candidate originally identified through NIRCam photometry as having weak [OIII]$λ\lam…

astro-ph.GA2025★ 3 cited

JWST's GLIMPSE: an overview of the deepest probe of early galaxy formation and cosmic reionization

Hakim Atek, John Chisholm, Vasily Kokorev +44

We present an overview of the JWST GLIMPSE program, highlighting its survey design, primary science goals, gravitational lensing models, and first results. GLIMPSE provides ultra-d…

astro-ph.GA2025★ 2 cited

A Fleeting GLIMPSE of N/O Enrichment at Cosmic Dawn: Evidence for Wolf Rayet N Stars in a z = 6.1 Galaxy

Danielle A. Berg, Rohan P. Naidu, John Chisholm +18

We present the discovery of extreme nitrogen enrichment by Wolf Rayet nitrogen stars (WN) in the metal-poor (~10% Z_odot), lensed, compact (R_eff ~ 20 pc) galaxy RXCJ2248 at z=6.1,…

astro-ph.GA2025★ 5 cited

A GLIMPSE into the very faint-end of the H+[OIII]4960,5008 luminosity function at z=7-9 behind Abell S1063

Damien Korber, Iryna Chemerynska, Lukas J. Furtak +12

We use the ultra-deep GLIMPSE JWST/NIRCam survey to constrain the faint-end of the H+[OIII]4960,5008 luminosity function (LF) down to erg/s at z=7-9 behind the len…

astro-ph.GA2025★ 11 cited

The first GLIMPSE of the faint galaxy population at Cosmic Dawn with JWST: The evolution of the ultraviolet luminosity function across z~9-15

Iryna Chemerynska, Hakim Atek, Lukas J. Furtak +27

Using ultra-deep JWST NIRCam imaging from the GLIMPSE Survey, enhanced by gravitational lensing of the AbellS1063 cluster, we investigate the faintest galaxies ever observed in the…

astro-ph.GA2025★ 3 cited

GLIMPSE: An ultra-faint 10 Pop III Galaxy Candidate and First Constraints on the Pop III UV Luminosity Function at

Seiji Fujimoto, Rohan P. Naidu, John Chisholm +32

Detecting the first generation of stars, Population III (PopIII), has been a long-standing goal in astrophysics, yet they remain elusive even in the JWST era. Here we present a nov…

astro-ph.GA2024★ 1 cited

A Glimpse of the New Redshift Frontier Through Abell S1063

Vasily Kokorev, Hakim Atek, John Chisholm +31

We report the discovery of two galaxy candidates at redshifts between in JWST observations from the GLIMPSE survey. These robust sources were identified using a combi…

astro-ph.GA2024★ 10 cited

Strong Balmer break objects at z ~ 7-10 uncovered with JWST

A. Kuruvanthodi, D. Schaerer, R. Marques-Chaves +4

We report the discovery of robust spectroscopically confirmed Balmer break (BB) galaxies and candidates, with secure spectroscopic redshifts from publicly avail…

astro-ph.GA2024★ 1 cited

Discovery of a new N-emitter in the epoch of reionization

D. Schaerer, R. Marques-Chaves, M. Xiao +1

We report the discovery of a compact star-forming galaxy at in the GOODS-North field (named GN-z9p4) which shows numerous strong UV-optical emission lines and a single UV…

astro-ph.GA2023★ 100 cited

Extreme N-emitters at high-redshift: signatures of supermassive stars and globular cluster or black hole formation in action?

R. Marques-Chaves, D. Schaerer, A. Kuruvanthodi +9

[Abridged] Using the JWST/NIRSpec observations from CEERS we found an extreme N-emitter, CEERS-1019 at z=8.6782 showing intense NIV and NIII emission. From the observed rest-UV and…

astro-ph.IM2023★ 22 cited

SKA Science Data Challenge 2: analysis and results

P. Hartley, A. Bonaldi, R. Braun +105

The Square Kilometre Array Observatory (SKAO) will explore the radio sky to new depths in order to conduct transformational science. SKAO data products made available to astronomer…

astro-ph.CO2022★ 11 cited

PINION: Physics-informed neural network for accelerating radiative transfer simulations for cosmic reionization

Damien Korber, Michele Bianco, Emma Tolley +1

With the advent of the Square Kilometre Array Observatory (SKAO), scientists will be able to directly observe the Epoch of Reionization by mapping the distribution of neutral hydro…

astro-ph.IM2022★ 5 cited

Lightweight HI source finding for next generation radio surveys

Emma Tolley, Damien Korber, Aymeric Galan +5

Future deep HI surveys will be essential for understanding the nature of galaxies and the content of the Universe. However, the large volume of these data will require distributed…