Search Publications
A CEERS Discovery of an Accreting Supermassive Black Hole 570 Myr after the Big Bang: Identifying a Progenitor of Massive z > 6 Quasars
Papovich, Casey; Cole, Justin W.; Yang, Guang +49 more
We report the discovery of an accreting supermassive black hole at z = 8.679. This galaxy, denoted here as CEERS_1019, was previously discovered as a Lyα-break galaxy by Hubble with a Lyα redshift from Keck. As part of the Cosmic Evolution Early Release Science (CEERS) survey, we have observed this source with JWST/NIRSpec, MIRI, NIRCam, and NIRCa…
Dusty Starbursts Masquerading as Ultra-high Redshift Galaxies in JWST CEERS Observations
Papovich, Casey; Cole, Justin W.; Yang, Guang +122 more
Lyman-break galaxy (LBG) candidates at z ≳ 10 are rapidly being identified in James Webb Space Telescope (JWST)/NIRCam observations. Due to the (redshifted) break produced by neutral hydrogen absorption of rest-frame UV photons, these sources are expected to drop out in the bluer filters while being well detected in redder filters. However, here w…
CEERS Key Paper. IV. A Triality in the Nature of HST-dark Galaxies
Papovich, Casey; Yang, Guang; Finkelstein, Steven L. +52 more
The new capabilities that JWST offers in the near- and mid-infrared (IR) are used to investigate in unprecedented detail the nature of optical/near-IR-faint, mid-IR-bright sources, with HST-dark galaxies among them. We gather JWST data from the CEERS survey in the Extended Groth Strip, jointly with HST data, and analyze spatially resolved optical-…
Early Planet Formation in Embedded Disks (eDisk). I. Overview of the Program and First Results
Kwon, Woojin; Lai, Shih-Ping; Han, Ilseung +34 more
We present an overview of the Large Program, "Early Planet Formation in Embedded Disks (eDisk)," conducted with the Atacama Large Millimeter/submillimeter Array (ALMA). The ubiquitous detections of substructures, particularly rings and gaps, in protoplanetary disks around T Tauri stars raise the possibility that at least some planet formation may …
The Young and the Wild: What Happens to Protoclusters Forming at Redshift z ≈ 4?
Dolag, Klaus; Dannerbauer, Helmut; Remus, Rhea-Silvia
Using one of the largest volumes of the hydrodynamical cosmological simulation suit Magneticum, we study the evolution of protoclusters identified at redshift ≈ 4, with properties similar to the well-observed protocluster SPT2349-56. We identify 42 protoclusters in the simulation as massive and equally rich in substructures as observed, confirming…
The ALMA Survey of 70 µm Dark High-mass Clumps in Early Stages (ASHES). IX. Physical Properties and Spatial Distribution of Cores in IRDCs
Jackson, James M.; Sanhueza, Patricio; Lu, Xing +13 more
The initial conditions found in infrared dark clouds (IRDCs) provide insights on how high-mass stars and stellar clusters form. We have conducted high-angular resolution and high-sensitivity observations toward thirty-nine massive IRDC clumps, which have been mosaicked using the 12 and 7 m arrays from the Atacama Large Millimeter/submillimeter Arr…
The Physical Drivers and Observational Tracers of CO-to-H2 Conversion Factor Variations in Nearby Barred Galaxy Centers
Sandstrom, Karin M.; Bolatto, Alberto D.; Leroy, Adam K. +24 more
The CO-to-H2 conversion factor (α CO) is central to measuring the amount and properties of molecular gas. It is known to vary with environmental conditions, and previous studies have revealed lower α CO in the centers of some barred galaxies on kiloparsec scales. To unveil the physical drivers of such variations, w…
The Mass Accretion Rate and Stellar Properties in Class I Protostars
Kóspál, Ágnes; Fiorellino, Eleonora; Cruz-Sáenz de Miera, Fernando +5 more
Stars collect most of their mass during the protostellar stage, yet the accretion luminosity and stellar parameters, which are needed to compute the mass accretion rate, are poorly constrained for the youngest sources. The aim of this work is to fill this gap, computing the stellar properties and the accretion rates for a large sample of Class I p…
JWST Insight into a Lensed HST-dark Galaxy and Its Quiescent Companion at z = 2.58
Fujimoto, Seiji; Kohno, Kotaro; Trebitsch, Maxime +13 more
Using the novel James Webb Space Telescope (JWST)/NIRCam observations in the A2744 field, we present a first spatially resolved overview of a Hubble Space Telescope (HST)-dark galaxy, spectroscopically confirmed at z = 2.58 with magnification µ ≈ 1.9. While being largely invisible at ~1 µm with NIRCam, except for sparse clumpy substruc…
Beyond UVJ: Color Selection of Galaxies in the JWST Era
Papovich, Casey; Martis, Nicholas S.; Muzzin, Adam +8 more
We present a new rest-frame color-color selection method using synthetic u s - g s and g s - i s , (ugi) s colors to identify star-forming and quiescent galaxies. Our method is similar to the widely used U - V versus V - J (UVJ) diagram. However, UVJ suffers known systematics. Spectros…