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Two Distinct Classes of Quiescent Galaxies at Cosmic Noon Revealed by JWST PRIMER and UNCOVER
Sam E. Cutler, Katherine E. Whitaker, John R. Weaver +31
We present a measurement of the low-mass quiescent size-mass relation at Cosmic Noon (1<z<3) from the JWST PRIMER and UNCOVER treasury surveys, which highlights two distinct classe…
The impact of an evolving stellar initial mass function on early galaxies and reionisation
Elie Rasmussen Cueto, Anne Hutter, Pratika Dayal +5
Observations with JWST have revealed an unexpected high abundance of bright z>10 galaxy candidates. We explore whether a stellar initial mass function (IMF) that becomes increasing…
JWST UNCOVER: The Overabundance of Ultraviolet-luminous Galaxies at
Iryna Chemerynska, Hakim Atek, Lukas J. Furtak +20
Over the past year, JWST has uncovered galaxies at record-breaking distances up to . The JWST UNCOVER (ultra-deep NIRSpec and NIRcam observations before the epoch of rei…
Metal and dust evolution in ALMA REBELS galaxies: insights for future JWST observations
Marco Palla, Ilse De Looze, Monica Relaño +16
ALMA observations revealed the presence of significant amounts of dust in the first Gyr of Cosmic time. However, the metal and dust buildup picture remains very uncertain due to th…
Quantifying the Effects of Known Unknowns on Inferred High-redshift Galaxy Properties: Burstiness, the IMF, and Nebular Physics
Bingjie Wang, Joel Leja, Hakim Atek +15
The era of the James Webb Space Telescope ushers stellar population models into uncharted territories, particularly at the high-redshift frontier. In a companion paper, we apply th…
UNCOVER: The rest ultraviolet to near infrared multiwavelength structures and dust distributions of sub-millimeter-detected galaxies in Abell 2744
Sedona H. Price, Katherine A. Suess, Christina C. Williams +18
With the wavelength coverage, sensitivity, and high spatial resolution of JWST, it is now possible to peer through the dust attenuation to probe the rest-frame near infrared (NIR)…
The UNCOVER Survey: A First-look HST+JWST Catalog of Galaxy Redshifts and Stellar Population Properties Spanning
Bingjie Wang, Joel Leja, Ivo Labbé +41
The recent UNCOVER survey with the James Webb Space Telescope (JWST) exploits the nearby cluster Abell 2744 to create the deepest view of our universe to date by leveraging strong…
Reaching for the stars -- JWST/NIRSpec spectroscopy of a lensed star candidate at
Lukas J. Furtak, Ashish K. Meena, Erik Zackrisson +31
We present JWST/NIRSpec observations of a highly magnified star candidate at a photometric redshift of , previously detected in JWST/NIRCam imaging of t…
UNCOVER: The growth of the first massive black holes from JWST/NIRSpec -- spectroscopic redshift confirmation of an X-ray luminous AGN at z=10.1
Andy D. Goulding, Jenny E. Greene, David J. Setton +27
The James Webb Space Telescope is now detecting early black holes (BHs) as they transition from "seeds" to supermassive BHs. Recently Bogdan et al. (2023) reported the detection of…
UNCOVER spectroscopy confirms a surprising ubiquity of AGN in red galaxies at
Jenny E. Greene, Ivo Labbe, Andy D. Goulding +31
JWST is revealing a new population of dust-reddened broad-line active galactic nuclei (AGN) at redshifts . Here we present deep NIRSpec/Prism spectroscopy from the Cycle…
The MUSE Ultra Deep Field (MUDF). IV. A pair of X-ray weak quasars at the heart of two extended Lyα nebulae
Elisabeta Lusso, Emanuele Nardini, Michele Fumagalli +10
We present the results obtained from follow-up observations of the MUSE Ultra Deep Field (MUDF) at X-ray energies with XMM-Newton. The MUDF is centred on a unique field with two br…
The ALMA REBELS survey: obscured star formation in massive Lyman-break galaxies at z = 4-8 revealed by the IRX- and relations
R. A. A. Bowler, H. Inami, L. Sommovigo +23
We investigate the degree of dust obscured star formation in 49 massive () Lyman-break galaxies (LBGs) at - observed as par…
MIDIS: Unveiling the Role of Strong Ha-emitters during the Epoch of Reionization with JWST
P. Rinaldi, K. I. Caputi, E. Iani +40
By using the ultra-deep \textit{JWST}/MIRI image at 5.6 in the Hubble eXtreme Deep Field, we constrain the role of strong H-emitters (HAEs) during Cosmic Reionization at $z…
DUALZ: Deep UNCOVER-ALMA Legacy High-Z Survey
Seiji Fujimoto, Rachel Bezanson, Ivo Labbe +29
We present the survey design and initial results of the ALMA Cycle 9 program of DUALZ, which aims to establish a joint ALMA and JWST public legacy field targeting the massive galax…
UNCOVER: JWST Spectroscopy of Three Cold Brown Dwarfs at Kiloparsec-scale Distances
Adam J. Burgasser, Rachel Bezanson, Ivo Labbe +19
We report JWST/NIRSpec spectra of three distant T-type brown dwarfs identified in the Ultradeep NIRSpec and NIRCam ObserVations before the Epoch of Reionization (UNCOVER) survey of…
UNCOVER: A NIRSpec Identification of a Broad Line AGN at z = 8.50
Vasily Kokorev, Seiji Fujimoto, Ivo Labbe +29
Deep observations with JWST have revealed an emerging population of red point-like sources that could provide a link between the postulated supermassive black hole seeds and observ…
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…
Most of the photons that reionized the Universe came from dwarf galaxies
Hakim Atek, Ivo Labbé, Lukas J. Furtak +30
The identification of sources driving cosmic reionization, a major phase transition from neutral Hydrogen to ionized plasma around 600-800 Myr after the Big Bang (Dayal et al. 2018…
A high black hole to host mass ratio in a lensed AGN in the early Universe
Lukas J. Furtak, Ivo Labbé, Adi Zitrin +34
Early JWST observations have uncovered a new population of red sources that might represent a previously overlooked phase of supermassive black hole growth (Kocevski et al. 2023; M…
UNCOVER: Illuminating the Early Universe -- JWST/NIRSpec Confirmation of Galaxies
Bingjie Wang, Seiji Fujimoto, Ivo Labbe +24
Observations of high-redshift galaxies provide a critical direct test to the theories of early galaxy formation, yet to date, only three have been spectroscopically confirmed at $z…
Predictions of the 21cm global signal in the JWST and ALMA era
Atrideb Chatterjee, Pratika Dayal, Valentin Mauerhofer
We calculate the redshift evolution of the global 21cm signal in the first billion years using a semi-analytic galaxy formation model, DELPHI, that jointly tracks the assembly of d…
UNCOVER: Candidate Red Active Galactic Nuclei at 3<z<7 with JWST and ALMA
Ivo Labbe, Jenny E. Greene, Rachel Bezanson +28
The James Webb Space Telescope (JWST) is revolutionizing our knowledge of galaxies and their actively accreting black holes. Using the JWST Cycle 1 Treasury program Ultradeep…
On the general nature of 21cm-Lyman- emitters cross-correlations during reionisation
Anne Hutter, Caroline Heneka, Pratika Dayal +4
We explore how the characteristics of the cross-correlation functions between the 21cm emission from the spin-flip transition of neutral hydrogen (HI) and early Lyman- (Ly) r…
Modelling the escape of Lyman Continuum photons from galaxies in the Epoch of Reionization
Jonas Bremer, Pratika Dayal
We couple the DELPHI framework for galaxy formation with a model for the escape of ionizing photons to study both its variability with galaxy assembly and the resulting key reioniz…