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Optical polarization and spectral properties of the H-poor superluminous supernovae SN 2021bnw and SN 2021fpl
F. Poidevin, C. M. B. Omand, Réka Könyves-Tóth +6
New optical photometric, spectrocopic and imaging polarimetry data are combined with publicly available data to study some of the physical properties of the two H-poor superluminou…
The ALPINE-ALMA [CII] survey: double stellar population and AGN activity in a galaxy at
L. Barchiesi, M. Dessauges-Zavadsky, C. Vignali +16
GDS J033218.92-275302.7 (here GS-14) is a galaxy detected in [CII] as part of the ALPINE survey with unusual UV spectral features that have been interpreted as signature…
LensWatch: I. Resolved HST Observations and Constraints on the Strongly-Lensed Type Ia Supernova 2022qmx ("SN Zwicky")
J. D. R. Pierel, N. Arendse, S. Ertl +39
Supernovae (SNe) that have been multiply-imaged by gravitational lensing are rare and powerful probes for cosmology. Each detection is an opportunity to develop the critical tools…
An extreme blue nugget, UV-bright starburst at z=3.613 with ninety per cent of Lyman continuum photon escape
R. Marques-Chaves, D. Schaerer, J. Alvarez-Marquez +9
We present the discovery and analysis of J1316+2614 at z=3.6130, a UV-bright star-forming galaxy () with large escape of Lyman continuum (LyC) radiation. J…
First look with JWST spectroscopy: galaxies resemble local analogues
D. Schaerer, R. Marques-Chaves, L. Barrufet +5
Deep images and near-IR spectra of galaxies in the field of the lensing cluster SMACS J0723.3-7327 were recently taken in the Early Release Observations program of JWST. Among thes…
Schrodinger's Galaxy Candidate: Puzzlingly Luminous at , or Dusty/Quenched at ?
Rohan P. Naidu, Pascal A. Oesch, David J. Setton +22
's first glimpse of the Universe has yielded a surprising abundance of luminous galaxy candidates. Here we present the most extreme of these systems: CEERS-1749. Based…
The Far-Ultraviolet Continuum Slope as a Lyman Continuum Escape Estimator at High-redshift
J. Chisholm, A. Saldana-Lopez, S. Flury +25
Most of the hydrogen in the intergalactic medium (IGM) was rapidly ionized at high-redshifts. While observations have established that reionization occurred, observational constrai…
No correlation of the Lyman continuum escape fraction with spectral hardness
R. Marques-Chaves, D. Schaerer, R. O. Amorín +25
The properties that govern the production and escape of hydrogen ionizing photons (Lyman continuum, LyC; with energies >13.6 eV) in star-forming galaxies are still poorly understoo…
Tracing Lyman-alpha and Lyman Continuum Escape in Galaxies with Mg II Emission
Xinfeng Xu, Alaina Henry, Timothy Heckman +29
Star-forming galaxies are considered the likeliest source of the H I ionizing Lyman Continuum (LyC) photons that reionized the intergalactic medium at high redshifts. However, abov…
A dusty compact object bridging galaxies and quasars at cosmic dawn
S. Fujimoto, G. B. Brammer, D. Watson +18
Understanding how super-massive black holes form and grow in the early Universe has become a major challenge since the discovery of luminous quasars only 700 million years after th…
Post maximum light and late time optical imaging polarimetry of type I superluminous supernova 2020znr
F. Poidevin, C. M. B. Omand, I. Pérez-Fournon +5
Optical imaging polarimetry was conducted on the hydrogen poor superluminous supernova 2020znr during 3 phases after maximum light (approximately +34 days, +288 days and +289 days)…
The Low-Redshift Lyman Continuum Survey. Unveiling the ISM properties of low- Lyman continuum emitters
Alberto Saldana-Lopez, Daniel Schaerer, John Chisholm +24
Combining 66 ultraviolet (UV) spectra and ancillary data from the Low-Redshift Lyman Continuum Survey (LzLCS) and 23 LyC observations by earlier studies, we form a statistical samp…