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astro-ph.GA2025

Using gravitational lensing to probe for bright quintessential galaxies in the Epoch of Reionization

Joshua Roberson, Matthew B. Bayliss, M. D. Gladders +6

Understanding the properties of the first generation of galaxies is an ongoing challenge in observational astrophysics. While advances in deep field observation have led to the ide…

astro-ph.GA2024

UNCOVER: A NIRSpec Census of Lensed Galaxies at z=8.50-13.08 Probing a High AGN Fraction and Ionized Bubbles in the Shadow

Seiji Fujimoto, Bingjie Wang, John Weaver +33

We present JWST NIRSpec prism spectroscopy of gravitationally lensed galaxies at found behind the massive galaxy cluster Abell 2744 in the UNCOVER Cycle 1 Treasury Prog…

astro-ph.GA2024

The JWST UNCOVER Treasury survey: Ultradeep NIRSpec and NIRCam ObserVations before the Epoch of Reionization

Rachel Bezanson, Ivo Labbe, Katherine E. Whitaker +40

In this paper we describe the survey design for the Ultradeep NIRSpec and NIRCam ObserVations before the Epoch of Reionization (UNCOVER) Cycle 1 \JWST Treasury program, which execu…

astro-ph.GA2024

JWST NIRSpec spectroscopy of the triply-lensed galaxy MACS0647JD

Tiger Yu-Yang Hsiao, Abdurro'uf, Dan Coe +38

We present JWST/NIRSpec prism spectroscopy of MACS0647-JD, the triply-lensed candidate discovered in HST imaging and spatially resolved by JWST imaging into two compone…

astro-ph.GA2024

ALMA Lensing Cluster Survey: Deep 1.2 mm Number Counts and Infrared Luminosity Functions at

Seiji Fujimoto, Kotaro Kohno, Masami Ouchi +40

We present a statistical study of 180 dust continuum sources identified in 33 massive cluster fields by the ALMA Lensing Cluster Survey (ALCS) over a total of 133 arcmin area…

astro-ph.GA2024

Bound star clusters observed in a lensed galaxy 460 Myr after the Big Bang

Angela Adamo, Larry D. Bradley, Eros Vanzella +25

The Cosmic Gems arc is among the brightest and highly magnified galaxies observed at redshift . However, it is an intrinsically UV faint galaxy, in the range of those no…