activity
20242026
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Showing astro-ph.GAShow all

9 papers · 1 filter

astro-ph.GA2026

Improved photometric redshift estimations through self-organising map-based data augmentation

Yun-Hao Zhang, Joe Zuntz, Irene Moskowitz +8

We introduce a framework for the enhanced estimation of photometric redshifts using Self-Organising Maps (SOMs). Our method projects galaxy Spectral Energy Distributions (SEDs) ont…

astro-ph.GA2025

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

CEERS: Forging the First Dust Grains in the Universe? A Population of Galaxies with spectroscopically-derived Extremely Low Dust Attenuation (GELDA) at 4.0<z<11.4

Denis Burgarella, Véronique Buat, Patrice Theulé +35

We investigate the coevolution of metals and dust in 173 galaxies at using NIRSpec spectroscopy. Focusing on galaxies with extremely low dust attenuation, we explore t…

astro-ph.GA2025

The Cosmic Evolution Early Release Science Survey (CEERS)

Steven L. Finkelstein, Micaela B. Bagley, Pablo Arrabal Haro +96

We present the Cosmic Evolution Early Release Science (CEERS) Survey, a 77.2 hour Director's Discretionary Early Release Science Program. CEERS demonstrates, tests, and validates e…

astro-ph.GA2024

The Lyman Continuum Escape Fraction of Star-forming Galaxies at from UVCANDELS

Xin Wang, Harry I. Teplitz, Brent M. Smith +74

The UltraViolet Imaging of the Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey Fields (UVCANDELS) survey is a Hubble Space Telescope (HST) Cycle-26 Treasury Program,…

astro-ph.GA2024

Looking At the Distant Universe with the MeerKAT Array: the HI Mass Function in the Local Universe

Amir Kazemi-Moridani, Andrew J. Baker, Marc Verheijen +24

We present measurements of the neutral atomic hydrogen (HI) mass function (HIMF) and cosmic HI density () at from the Looking at the Distant Univ…