28 citations · 34 across the 19 of their papers we have counts for
20 papers
Quiescent Galaxies at from CAPERS spectroscopy and their Number densities
Lu Shen, Weida Hu, Casey Papovich +28
Recent JWST observations have revealed an overabundance of quiescent galaxies at high redshift. Photometric methods, such as photometry-derived sSFRs, colors, and synthetic $…
The THRILS Factor: Investigating the properties of Little Red Dots (LRDs) at 3<z<6 with JWST/NIRSpec
Ananya Ganapathy, Rebecca L. Larson, Erini Lambrides +20
JWST has uncovered a class of objects called LRDs, whose nature is still widely debated. In this work, we present a comprehensive spectroscopic analysis of nine LRDs in the Extende…
C3PO: A Lyα Emitting Galaxy at
Weida Hu, Casey Papovich, Taylor A. Hutchison +6
We present deep, hr, JWST NIRSpec G140M and G395M observations of a previously known galaxy C3PO-8447 at . Our new NIRSpec data from the Carbon-3 plus Oxygen (C3PO…
An emerging baryon cycle in a galaxy 500 million years after the Big Bang
Shengzhe Wang, Xin Wang, Hang Zhou +17
The emergence of stellar feedback as a regulator of galaxy growth marks a fundamental transition in cosmic history. At early times, rapid gas accretion and collapse may induce inte…
Implications of Broad [O III] 4364 and UV Line Emission in Two Little Red Dots at z ~ 7 - 8
Casey Papovich, Kaila Ronayne, Weida Hu +17
We present deep, NIRSpec G140M and G395M spectroscopy of Little Red Dots (LRDs) at z = 6.68 and z = 8.35. Both LRDs show broad Balmer and [O III] 4364 emission. The broad [O III…
Deep Spectroscopic Follow-Up of Maisie's Galaxy -- A Typical Galaxy in the Early Universe
Rebecca L. Larson, Taylor A. Hutchison, Steven L. Finkelstein +26
The first several years of JWST observations have yielded surprisingly large numbers of bright galaxies, with follow-up spectroscopy of many of these sources implying extrem…
The quasi-star model for Little Red Dots: potential and challenges
Fabrizio Gentile, Mauro Giavalisco, Emanuele Daddi +25
(Abridged) Little Red Dots (LRDs) are a class of sources discovered by JWST observationally defined by a "V-shaped" rest-frame UV-Optical SED, a compact or unresolved morphology, a…
Using Ly Transmitted Spectrum to Probe IGM Transmission and Identify Ionized Structures in Cosmic Reionization
Weida Hu, Casey Papovich, Lu Shen +16
We present a study of intergalactic medium (IGM) transmission at using high-signal-to-noise JWST/NIRSpec prism spectroscopy of 143 galaxies at from the CAPE…
Extreme Emission Line Galaxies in CEERS Are Powered by Star Formation, not AGN
Kelcey Davis, Madisyn Brooks, Jonathan R. Trump +28
We present a spectroscopic study of photometrically identified extreme emission-line galaxies (EELGs) with observed-frame equivalent widths (EWs) >5000 A of either H alpha or H bet…
The HST-Hyperion Survey: Environmental Imprints on the Stellar-Mass Function at z~2.5
Derek Sikorski, Ben Forrest, Brian C. Lemaux +19
Not all galaxies at Cosmic Noon evolve in the same way. It remains unclear how the local environment -- especially the extreme overdensities of protoclusters -- affects stellar mas…
Very bright, very blue, and very red: JWST CAPERS analysis of highly luminous galaxies with extreme UV slopes at
Callum T. Donnan, Mark Dickinson, Anthony J. Taylor +37
We present JWST/NIRSpec PRISM observations of three luminous () galaxies at observed with the CAPERS Cycle 3 program. These galaxies exhibit extreme UV sl…
Optical Strong Line Ratios Cannot Distinguish Between Stellar Populations and Accreting Black Holes at High Ionization Parameters and Low Metallicities
Nikko J. Cleri, Grace M. Olivier, Bren E. Backhaus +24
High-redshift observations from JWST indicate that optical strong line ratios do not carry the same constraining power as they do at low redshifts. Critically, this prevents a sepa…
Galaxies in the Epoch of Reionization Are All Bark and No Bite -- Plenty of Ionizing Photons, Low Escape Fractions
Casey Papovich, Justin W. Cole, Weida Hu +27
Early results from JWST suggest that epoch-of-reionization (EoR) galaxies produce copious ionizing photons, which, if they escape efficiently, could cause reionization to occur too…
CAPERS Observations of Two UV-Bright Galaxies at z>10. More Evidence for Bursting Star Formation in the Early Universe
Vasily Kokorev, Óscar A. Chávez Ortiz, Anthony J. Taylor +38
We present the first results from the CAPERS survey, utilizing PRISM observations with the JWST/NIRSpec MSA in the PRIMER-UDS field. With just 14 % of the total planned data volume…
The HST-Hyperion Survey: Grism Observations of a Proto-Supercluster
Ben Forrest, Lu Shen, Brian C. Lemaux +19
We present first results and catalogs from the HST-Hyperion survey. This survey has collected 50 orbits of WFC3/F160W imaging and WFC3/G141 grism spectroscopy in the most overdense…
Extended Enriched Gas in a Multi-Galaxy Merger at Redshift 6.7
Weida Hu, Casey Papovich, Lu Shen +5
Recent JWST observations have uncovered high-redshift galaxies characterized by multiple star-forming clumps, many of which appear to be undergoing mergers. Such mergers, especiall…
Characterizing the Average Interstellar Medium Conditions of Galaxies at 5.6-9 with UV and Optical Nebular Lines
Weida Hu, Casey Papovich, Mark Dickinson +30
Ultraviolet (UV; rest-frame A) spectra provide a wealth of diagnostics to characterize fundamental galaxy properties, such as their chemical enrichment, the nature…
The Hubble Deep Hydrogen Alpha (HDH) Project: I. Catalog of Emission-line Galaxies
Shuairu Zhu, Zhen-Ya Zheng, James Rhoads +14
We present the first results of the Hubble Deep Hydrogen Alpha (HDH) project, which analyzes the space-borne deep H narrowband imaging data in the GOODS-S region. The HDH…
NGDEEP Epoch 1: Spatially Resolved H Observations of Disk and Bulge Growth in Star-Forming Galaxies at 0.6-2.2 from JWST NIRISS Slitless Spectroscopy
Lu Shen, Casey Papovich, Jasleen Matharu +21
We study the H equivalent width, EW(H), maps of 19 galaxies at in the Hubble Ultra Deep Field (HUDF) derived from NIRISS slitless spectroscopy as part of the…
A large, deep 3 deg survey of H, [OIII], and [OII] emitters from LAGER: constraining luminosity functions
Ali Ahmad Khostovan, Sangeeta Malhotra, James E. Rhoads +14
We present our measurements of the H, [OIII], and [OII] luminosity functions as part of the Lyman Alpha Galaxies at Epoch of Reionization (LAGER) survey using our samples of 157…