activity
20152026
most citedReionization after Planck: The Derived Growth of the Cosmic Ionizing Emissivity now matches the Growth of the Galaxy UV Luminosity Density

440 citations · 1.1k across the 72 of their papers we have counts for

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Showing 2025Show all

27 papers · 1 filter

astro-ph.GA2025

ALMA and JWST Identification of Faint Dusty Star-Forming Galaxies up to z~8

Jorge A. Zavala, Andreas L. Faisst, Manuel Aravena +44

We exploit a new sample of around 400 bright dusty galaxies from the ALMA CHAMPS Large Program, together with the rich JWST multi-band data products in the COSMOS field, to explore…

astro-ph.GA2025★ 1 cited

A first look at a complete view of spatially resolved star formation at 1<z<1.8 with JWST NGDEEP+FRESCO slitless spectroscopy

Jasleen Matharu, Lu Shen, Irene Shivaei +15

[abridged] The previously inaccessible star formation tracer Pa can now be spatially resolved by JWST NIRCam slitless spectroscopy in distant galaxies up to cosmic noon. In the…

astro-ph.GA2025★ 1 cited

First Light And Reionisation Epoch Simulations (FLARES) XX: Comparing semi-analytic models at high-redshift

Louise T. C. Seeyave, Carlton M. Baugh, Angel Chandro-Gomez +13

We explore how the choice of galaxy formation model affects the predicted properties of high-redshift galaxies. Using the FLARES zoom resimulation strategy, we compare the EAGLE hy…

astro-ph.GA2025

Euclid Quick Data Release (Q1): Identification of massive galaxy candidates at the end of the Epoch of Reionisation

Euclid Collaboration, R. Navarro-Carrera, K. I. Caputi +295

Probing the presence and properties of massive galaxies at high redshift is one of the most critical tests for galaxy formation models. In this work, we search for galaxies with st…

astro-ph.GA2025★ 1 cited

Flexible Simulation Based Inference for Galaxy Photometric Fitting with Synthesizer

Thomas Harvey, Christopher C. Lovell, Sophie Newman +13

We introduce Synference, a new, flexible Python framework for galaxy SED fitting using simulation-based inference (SBI). Synference leverages the Synthesizer package for flexible f…

astro-ph.GA2025

An almost NIRCam-dark dusty star-forming galaxy at z=6.63

Longji Bing, Seb Oliver, Mengyuan Xiao +28

We present AC-2168, an almost NIRCam-dark, millimetre-bright galaxy in the COSMOS field. The source was identified blindly in ALMA Band-4 continuum data and remains undetected in t…

astro-ph.GA2025

The CEERS Photometric and Physical Parameter Catalog

Isa G. Cox, Jeyhan S. Kartaltepe, Micaela B. Bagley +35

We present the Cosmic Evolution Early Release Science Survey (CEERS) catalog, including space-based photometry, photometric redshifts, and physical parameters for more than 80,000…

astro-ph.GA2025★ 2 cited

The Relationship at : Big Black Holes in Little Red Dots

Brenda L. Jones, Dale D. Kocevski, Fabio Pacucci +25

JWST has identified a large population of faint, broad-line active galactic nuclei (AGN) in the early universe that are powered by black holes (BHs) that often appear overmassive r…

astro-ph.GA2025

The Nature of High-Redshift Massive Quiescent Galaxies -- Searching for RUBIES-UDS-QG-z7 in FLARES

Jack C. Turner, Will J. Roper, Aswin P. Vijayan +5

RUBIES-UDS-QG-z7 (RQG) is the earliest massive quiescent galaxy identified to date, inferred to have formed its abundant stellar mass in a single burst that ceases rapidly before $…

astro-ph.GA2025★ 5 cited

Mysteries of Capotauro: investigating the puzzling nature of an extreme F356W-dropout

Giovanni Gandolfi, Giulia Rodighiero, Marco Castellano +38

JWST has uncovered a diverse population of extreme near-infrared dropouts, including ultra high-redshift () galaxy candidates, dust-obscured galaxies challenging dust product…

astro-ph.GA2025

Sieging HELM's deep: PRIMA unveils the far-infrared properties of highly extincted low-mass galaxies

Laura Bisigello, Carlotta Gruppioni, Giulia Rodighiero +5

Although the majority of star-forming galaxies show a tight correlation between stellar mass and dust extinction, recent James Webb Space Telescope observations have revealed a pec…

astro-ph.GA2025★ 1 cited

Physical properties of galaxies and the UV Luminosity Function from to in COSMOS-Web

Maximilien Franco, Caitlin M. Casey, Hollis B. Akins +37

We present measurements of the rest-frame ultraviolet luminosity function (UVLF) in three redshift bins over -14 from the JWST COSMOS-Web survey. Our samples, selected us…

astro-ph.IM2025★ 9 cited

Synthesizer: a Software Package for Synthetic Astronomical Observables

Christopher C. Lovell, William J. Roper, Aswin P. Vijayan +3

We present Synthesizer, a fast, flexible, modular and extensible platform for modelling synthetic astrophysical observables. Synthesizer can be used for a number of applications, b…

astro-ph.GA2025★ 3 cited

Interpreting nebular emission lines in the high-redshift Universe

Aswin P. Vijayan, Robert M. Yates, Christopher C. Lovell +7

One of the most remarkable outcomes from \textit{JWST} has been the exquisite UV-optical spectroscopic data for galaxies in the high-redshift Universe (), enabling the us…

astro-ph.GA2025

Dissecting Reionisation with the Cosmic Star Formation and Active Galactic Nuclei Luminosity History

Jordan C. J. D'Silva, Simon P. Driver, Claudia D. P. Lagos +23

The combination of the cosmic star formation history and active galactic nuclei (AGN) luminosity history as inferred by the James Webb Space Telescope is connected to th…

astro-ph.GA2025★ 2 cited

Testing Photometric Techniques for Measuring the Rest-Frame UV Spectral Slope Against JWST PRISM Spectroscopy

Alexa M. Morales, Steven L. Finkelstein, Pablo Arrabal Haro +21

We present a sample of 53 galaxy spectra at z_spec ~ 5-12 from the JWST CEERS and RUBIES surveys, combining NIRSpec PRISM spectroscopy with NIRCam photometry. We aim to use these d…

astro-ph.GA2025★ 1 cited

CAPERS-LRD-z9: A Gas Enshrouded Little Red Dot Hosting a Broad-line AGN at z=9.288

Anthony J. Taylor, Vasily Kokorev, Dale D. Kocevski +49

We present CAPERS-LRD-z9, a little red dot (LRD) which we confirm to be a broad-line AGN (BLAGN). First identified as a high-redshift LRD candidate from PRIMER NIRCam pho…

astro-ph.IM2025★ 2 cited

Synthesizer: Synthetic Observables For Modern Astronomy

Will J. Roper, Christopher Lovell, Aswin Vijayan +12

Synthesizer is a fast, flexible, modular, and extensible Python package that empowers astronomers to turn theoretical galaxy models into realistic synthetic observations - includin…

astro-ph.GA2025★ 1 cited

Quantifying biases in stellar masses of JWST high-z quasar host galaxies caused by quasar subtraction

Sabrina Berger, Madeline A. Marshall, J. Stuart B. Wyithe +4

JWST has enabled dozens of high- quasar host galaxy detections. Many of these observations imply galaxies with black holes that are overmassive compared to their low- counter…

astro-ph.GA2025★ 15 cited

Lonely Little Red Dots: Challenges to the AGN-nature of little red dots through their clustering and spectral energy distributions

María Carranza-Escudero, Christopher J. Conselice, Nathan Adams +31

Observations with the James Webb Space Telescope (JWST) reveal a previously unseen population of compact red objects, known as ``little red dots`` (LRDs). We study a new photometri…

astro-ph.GA2025★ 4 cited

First Light and Reionization Epoch Simulations (FLARES) -- XVIII: the ionising emissivities and hydrogen recombination line properties of early AGN

Stephen M. Wilkins, Aswin P. Vijayan, Scott Hagen +10

One of the most remarkable results from the \emph{James Webb Space Telescope} has been the discovery of a large population of compact sources exhibiting strong broad H emission,…

astro-ph.GA2025★ 1 cited

First Light And Reionization Epoch Simulations (FLARES) -- XIX: Supermassive black hole mergers in the early Universe and their environmental dependence

Shihong Liao, Dimitrios Irodotou, Maxwell G. A. Maltz +10

The upcoming space-based gravitational wave (GW) observatory, LISA, is expected to detect GW signals from supermassive black hole (SMBH) mergers occurring at high redshifts. Howeve…

astro-ph.GA2025

CAPERS Observations of Two UV-Bright Galaxies at z>10. More Evidence for Bursting Star Formation in the Early Universe

Vasily Kokorev, Óscar A. Chávez Ortiz, Anthony J. Taylor +38

We present the first results from the CAPERS survey, utilizing PRISM observations with the JWST/NIRSpec MSA in the PRIMER-UDS field. With just 14 % of the total planned data volume…

astro-ph.GA2025★ 1 cited

Self-Consistent JWST Census of Star Formation and AGN activity at z=5.5-13.5

Jordan C. J. D'Silva, Simon P. Driver, Claudia D. P. Lagos +24

The cosmic star formation history (CSFH) and cosmic active galactic nuclei (AGN) luminosity history (CAGNH) are self consistently measured at . This is achieved by an…