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A Panchromatic Study of Massive Stars in the Extremely Metal-Poor Local Group Dwarf Galaxy Leo A
Maude Gull, Daniel R. Weisz, Peter Senchyna +17
We characterize massive stars (M>8 M_sun) in the nearby (D~0.8 Mpc) extremely metal-poor (Z~5% Z_sun) galaxy Leo A using Hubble Space Telescope ultra-violet (UV), optical, and near…
JWST UNCOVER: Extremely red and compact object at triply imaged by Abell 2744
Lukas J. Furtak, Adi Zitrin, Adèle Plat +29
Recent JWST/NIRCam imaging taken for the ultra-deep UNCOVER program reveals a very red dropout object at , triply imaged by the galaxy cluster Abell 274…
Spectroscopic confirmation of four metal-poor galaxies at z=10.3-13.2
Emma Curtis-Lake, Stefano Carniani, Alex Cameron +56
Finding and characterising the first galaxies that illuminated the early Universe at cosmic dawn is pivotal to understand the physical conditions and the processes that led to the…
Identification and properties of intense star-forming galaxies at redshifts z>10
B. E. Robertson, S. Tacchella, B. D. Johnson +53
Surveys with James Webb Space Telescope (JWST) have discovered candidate galaxies in the first 400 Myr of cosmic time. Preliminary indications have suggested these candidate galaxi…
The Origin of the Observed Lyman alpha EW Distribution of Dwarf Galaxies at z~2
C. Snapp-Kolas, B. Siana, T. Gburek +5
We present a rest-UV selected sample of 32 lensed galaxies at observed with joint Keck/LRIS rest-UV and Keck/MOSFIRE rest-optical spectra behind the clusters Abell 1689,…
JWST reveals a possible galaxy merger in triply-lensed MACS0647JD
Tiger Yu-Yang Hsiao, Dan Coe, Abdurro'uf +63
MACS0647JD is a triply-lensed galaxy originally discovered with the Hubble Space Telescope. Here we report new JWST imaging, which clearly resolves MACS0647JD as ha…
Resolved velocity profiles of galactic winds at Cosmic Noon
Keerthi Vasan G. C., Tucker Jones, Ryan L. Sanders +7
We study the kinematics of the interstellar medium (ISM) viewed "down the barrel" in 20 gravitationally lensed galaxies during Cosmic Noon (). We use moderate-resoluti…
Metal-Enriched Neutral Gas Reservoir around a Strongly-lensed, Low-mass Galaxy at Identified by JWST/NIRISS and VLT/MUSE
Xiaojing Lin, Zheng Cai, Siwei Zou +19
Direct observations of low-mass, low-metallicity galaxies at provide an indispensable opportunity for detailed inspection of the ionization radiation, gas flow, and met…
A JWST/NIRCam Study of Key Contributors to Reionization: The Star-forming and Ionizing Properties of UV-faint Galaxies
Ryan Endsley, Daniel P. Stark, Lily Whitler +5
Spitzer/IRAC imaging has revealed that the brightest galaxies often exhibit young ages and strong nebular line emission, hinting at high ionizing efficiency among early…
The ALMA REBELS Survey: The Dust-obscured Cosmic Star Formation Rate Density at Redshift 7
Hiddo Algera, Hanae Inami, Pascal Oesch +21
Cosmic dust is an essential component shaping both the evolution of galaxies and their observational signatures. How quickly dust builds up in the early Universe remains an open qu…
The Direct-Method Oxygen Abundance of Typical Dwarf Galaxies at Cosmic High-Noon
Timothy Gburek, Brian Siana, Anahita Alavi +5
We present a Keck/MOSFIRE, rest-optical, composite spectrum of 16 typical, gravitationally-lensed, star-forming, dwarf galaxies at ($z_{\rm{mean}}=2.3…
Early Results From GLASS-JWST. XVII: Building the First Galaxies -- Chapter 1. Star Formation Histories at 5<z < 7
A. Dressler, B. Vulcani, T. Treu +19
JWST observations of high redshift galaxies are used to measure their star formation histories - the buildup of stellar mass in the earliest galaxies. Here we use a novel analysis…
Searching for Extremely Blue UV Continuum Slopes at in JWST/NIRCam Imaging: Implications for Stellar Metallicity and Ionizing Photon Escape in Early Galaxies
Michael W. Topping, Daniel P. Stark, Ryan Endsley +4
The ultraviolet (UV) continuum slope (where) of galaxies is sensitive to a variety of properties, from the metallicity and age of the stellar population to dust…
On the ages of bright galaxies Myr after the Big Bang: insights into star formation activity at with JWST
Lily Whitler, Ryan Endsley, Daniel P. Stark +3
With JWST, new opportunities to study the evolution of galaxies in the early Universe are emerging. Spitzer constraints on rest-optical properties of galaxies demonstra…
A Preview of JWST Metallicity Studies at Cosmic Noon: The First Detection of Auroral [O II] Emission at High Redshift
Ryan L. Sanders, Alice E. Shapley, Leonardo Clarke +6
We present ultra-deep Keck/MOSFIRE rest-optical spectra of two star-forming galaxies at z=2.18 in the COSMOS field with bright emission lines, representing more than 20~hours of to…
JWST/NIRCam Observations of Stars and HII Regions in Galaxies: Properties of Star Forming Complexes on 150 pc Scales
Zuyi Chen, Daniel P. Stark, Ryan Endsley +3
The onset of the {\it JWST}-era provides a much-improved opportunity to characterize the resolved structure of early star forming systems. Previous {\it Spitzer} observations of $z…
The ALMA REBELS Survey: Average [CII] sizes of Star-Forming Galaxies from to
Y. Fudamoto, R. Smit, R. A. A. Bowler +36
We present the average [CII] emission line sizes of UV-bright star-forming galaxies at . Our results are derived from a stacking analysis of [CII] $158\,\rm{…
CLASSY V: The impact of aperture effects on the inferred nebular properties of local star-forming galaxies
Karla Z. Arellano-Córdova, Matilde Mingozzi, Danielle A. Berg +23
Strong nebular emission lines are an important diagnostic tool for tracing the evolution of star-forming galaxies across cosmic time. However, different observational setups can af…
CLASSY II: A technical Overview of the COS Legacy Archive Spectroscopic SurveY
Bethan L. James, Danielle A. Berg, Teagan King +45
The COS Legacy Archive Spectroscopic SurveY (CLASSY) is designed to provide the community with a spectral atlas of 45 nearby star-forming galaxies which were chosen to cover simila…
Star formation histories of UV-luminous galaxies at : implications for stellar mass assembly at early cosmic times
Lily Whitler, Daniel P. Stark, Ryan Endsley +3
The variety of star formation histories (SFHs) of galaxies provides important insights into early star formation, but has been difficult to systematically quantify. Som…
ALMA Confirmation of an Obscured Hyperluminous Radio-Loud AGN at Associated with a Dusty Starburst in the 1.5 deg COSMOS Field
Ryan Endsley, Daniel P. Stark, Jianwei Lyu +7
We present band 6 ALMA observations of a heavily-obscured radio-loud ( W Hz) AGN candidate at found in the 1.5…
CLASSY III: The Properties of Starburst-Driven Warm Ionized Outflows
Xinfeng Xu, Timothy Heckman, Alaina Henry +18
We report the results of analyses of galactic outflows in a sample of 45 low-redshift starburst galaxies in the COS Legacy Archive Spectroscopic SurveY (CLASSY), augmented by five…
A double-peaked Lyman- emitter with a strong blue peak multiply imaged by the galaxy cluster RXC J0018.5+1626
Lukas J. Furtak, Adèle Plat, Adi Zitrin +10
We report the discovery of a double-peaked Lyman- (Ly) emitter (LAE) at in VLT/MUSE data. The galaxy is strongly lensed by the galaxy cluster RXC~J0018.5+…
The ALMA REBELS Survey: Specific Star-Formation Rates in the Reionization Era
Michael W. Topping, Daniel P. Stark, Ryan Endsley +21
We present specific star-formation rates for 40 UV-bright galaxies at observed as part of the Reionization Era Bright Emission Line Survey (REBELS) ALMA large program. T…