16 papers
Direct T_e-based Metallicities of z=2-9 Galaxies with JWST/NIRSpec: Empirical Metallicity Calibrations Applicable from Reionization to Cosmic Noon
Ryan L. Sanders, Alice E. Shapley, Michael W. Topping +2
We report detections of the [OIII]4364 auroral emission line for 16 galaxies at z=2.1-8.7, measured from JWST/NIRSpec observations obtained as part of the Cosmic Evolution Earl…
Discovery of Ancient Globular Cluster Candidates in the Relic, a Quiescent Galaxy at
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…
Unveiling the Cosmic Gems Arc at with JWST NIRCam
Larry D. Bradley, Angela Adamo, Eros Vanzella +22
We present recent JWST NIRCam imaging observations of SPT0615-JD (also known as the Cosmic Gems Arc), lensed by the galaxy cluster SPT-CL J0615-5746. The 5 arcsec long arc is the m…
UNCOVER/MegaScience: No Evidence of Environmental Quenching in a z2.6 Proto-cluster
Richard Pan, Katherine A. Suess, Danilo Marchesini +22
Environmental quenching -- where interactions with other galaxies and/or the intra-cluster medium (ICM) suppress star formation in low-mass galaxies -- has been well-established as…
JWST UNCOVERs the Optical Size - Stellar Mass Relation at : Rapid Growth in the Sizes of Low Mass Galaxies in the First Billion Years of the Universe
Tim B. Miller, Katherine A. Suess, David J. Setton +21
We study the rest-frame optical and ultraviolet morphology of galaxies in the first billion years of the Universe. Using JWST data from the UNCOVER and MegaScience surveys targetin…
Investigating photometric and spectroscopic variability in the multiply-imaged Little Red Dot A2744-QSO1
Lukas J. Furtak, Amy R. Secunda, Jenny E. Greene +25
JWST observations have uncovered a new population of red, compact objects at high redshifts dubbed `Little Red Dots' (LRDs), which typically show broad emission lines and are thoug…