Search Publications
CEERS Key Paper. I. An Early Look into the First 500 Myr of Galaxy Formation with JWST
Papovich, Casey; Yang, Guang; Finkelstein, Steven L. +64 more
We present an investigation into the first 500 Myr of galaxy evolution from the Cosmic Evolution Early Release Science (CEERS) survey. CEERS, one of 13 JWST ERS programs, targets galaxy formation from z ~ 0.5 to >10 using several imaging and spectroscopic modes. We make use of the first epoch of CEERS NIRCam imaging, spanning 35.5 arcmin2<…
A JWST/NIRSpec First Census of Broad-line AGNs at z = 4-7: Detection of 10 Faint AGNs with M BH 106-108 M ⊙ and Their Host Galaxy Properties
Ono, Yoshiaki; Ouchi, Masami; Harikane, Yuichi +6 more
We present the first statistical sample of faint type 1 AGNs at z > 4 identified by JWST/NIRSpec deep spectroscopy. Among the 185 galaxies at z spec = 3.8-8.9 confirmed with NIRSpec, our systematic search for broad-line emission reveals 10 type 1 AGNs at z = 4.015-6.936 whose broad component is only seen in the permitted Hα line and …
Hidden Little Monsters: Spectroscopic Identification of Low-mass, Broad-line AGNs at z > 5 with CEERS
Papovich, Casey; Yang, Guang; Finkelstein, Steven L. +38 more
We report on the discovery of two low-luminosity, broad-line active galactic nuclei (AGNs) at z > 5 identified using JWST NIRSpec spectroscopy from the Cosmic Evolution Early Release Science (CEERS) survey. We detect broad Hα emission in the spectra of both sources, with FWHM of 2060 ± 290 km s‑1 and 1800 ± 200 km s‑1, res…
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…
CEERS Epoch 1 NIRCam Imaging: Reduction Methods and Simulations Enabling Early JWST Science Results
Papovich, Casey; Yang, Guang; Finkelstein, Steven L. +37 more
We present the data release and data reduction process for the Epoch 1 NIRCam observations for the Cosmic Evolution Early Release Science Survey (CEERS). These data consist of NIRCam imaging in six broadband filters (F115W, F150W, F200W, F277W, F356W and F444W) and one medium-band filter (F410M) over four pointings, obtained in parallel with prima…
COSMOS-Web: An Overview of the JWST Cosmic Origins Survey
Finkelstein, Steven L.; Bagley, Micaela B.; Casey, Caitlin M. +83 more
We present the survey design, implementation, and outlook for COSMOS-Web, a 255 hr treasury program conducted by the James Webb Space Telescope in its first cycle of observations. COSMOS-Web is a contiguous 0.54 deg2 NIRCam imaging survey in four filters (F115W, F150W, F277W, and F444W) that will reach 5σ point-source depths ranging ~27…
Spectroscopic Confirmation of CEERS NIRCam-selected Galaxies at z ≃ 8-10
Papovich, Casey; Cole, Justin W.; Yang, Guang +45 more
We present JWST/NIRSpec prism spectroscopy of seven galaxies selected from Cosmic Evolution Early Release Science (CEERS) survey NIRCam imaging with photometric redshifts z phot > 8. We measure emission line redshifts of z = 7.65 and 8.64 for two galaxies. For two other sources without securely detected emission lines we measure $z={…
JWST CEERS and JADES Active Galaxies at z = 4-7 Violate the Local M •-M ⋆ Relation at >3σ: Implications for Low-mass Black Holes and Seeding Models
Carniani, Stefano; Maiolino, Roberto; Fan, Xiaohui +2 more
JWST is revolutionizing our understanding of the high-z Universe by expanding the black hole horizon, looking farther and to smaller masses, and revealing the stellar light of their hosts. By examining JWST galaxies at z = 4-7 that host Hα-detected black holes, we investigate (i) the high-z M •-M ⋆ relation and (ii) the black…
UNCOVER: A NIRSpec Identification of a Broad-line AGN at z = 8.50
Nanayakkara, Themiya; Fujimoto, Seiji; Bezanson, Rachel +29 more
Deep observations with the James Webb Space Telescope (JWST) have revealed an emerging population of red pointlike sources that could provide a link between the postulated supermassive black hole seeds and observed quasars. In this work, we present a JWST/NIRSpec spectrum from the JWST Cycle 1 UNCOVER Treasury survey of a massive accreting black h…
Tidal Disruption Event Demographics with the Zwicky Transient Facility: Volumetric Rates, Luminosity Function, and Implications for the Local Black Hole Mass Function
Kulkarni, S. R.; Cenko, S. Bradley; Riddle, Reed +26 more
We conduct a systematic tidal disruption event (TDE) demographics analysis using the largest sample of optically selected TDEs. A flux-limited, spectroscopically complete sample of 33 TDEs is constructed using the Zwicky Transient Facility over 3 yr (from 2018 October to 2021 September). We infer the black hole (BH) mass (M BH) with hos…