Search Publications
Evolution of the UV LF from z 15 to z 8 using new JWST NIRCam medium-band observations over the HUDF/XDF
van Dokkum, Pieter G.; Illingworth, Garth D.; Brammer, Gabriel +7 more
We present the first constraints on the prevalence of z > 10 galaxies in the Hubble Ultra Deep Field (HUDF) leveraging new NIRCam observations from JEMS (JWST Extragalactic Medium-band Survey). These NIRCam observations probe redward of 1.6 µm, beyond the wavelength limit of HST, allowing us to search for galaxies to z > 10. These obse…
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…
UNCOVER: The Growth of the First Massive Black Holes from JWST/NIRSpec-Spectroscopic Redshift Confirmation of an X-Ray Luminous AGN at z = 10.1
Papovich, Casey; van Dokkum, Pieter; Fujimoto, Seiji +27 more
The James Webb Space Telescope is now detecting early black holes (BHs) as they transition from "seeds" to supermassive BHs. Recently, Bogdan et al. reported the detection of an X-ray luminous supermassive BH, UHZ-1, with a photometric redshift at z > 10. Such an extreme source at this very high redshift provides new insights on seeding and gro…
The Spectroscopic Data Processing Pipeline for the Dark Energy Spectroscopic Instrument
Alexander, D. M.; Moustakas, J.; Myers, Adam D. +55 more
We describe the spectroscopic data processing pipeline of the Dark Energy Spectroscopic Instrument (DESI), which is conducting a redshift survey of about 40 million galaxies and quasars using a purpose-built instrument on the 4 m Mayall Telescope at Kitt Peak National Observatory. The main goal of DESI is to measure with unprecedented precision th…
EIGER. II. First Spectroscopic Characterization of the Young Stars and Ionized Gas Associated with Strong Hβ and [O III] Line Emission in Galaxies at z = 5-7 with JWST
Simcoe, Robert A.; Kashino, Daichi; Eilers, Anna-Christina +4 more
We present emission-line measurements and physical interpretations for a sample of 117 [O III] emitting galaxies at z = 5.33-6.93, using the first deep JWST/NIRCam wide-field slitless spectroscopic observations. Our 9.7 hr integration is centered upon the z = 6.3 quasar J0100+2802-the first of six fields targeted by the EIGER survey-and covers λ =…
Early Release Science of the exoplanet WASP-39b with JWST NIRISS
Henning, Thomas; Fortney, Jonathan J.; Carter, Aarynn L. +86 more
The Saturn-mass exoplanet WASP-39b has been the subject of extensive efforts to determine its atmospheric properties using transmission spectroscopy1-4. However, these efforts have been hampered by modelling degeneracies between composition and cloud properties that are caused by limited data quality5-9. Here we present the t…
An Atlas of Color-selected Quiescent Galaxies at z > 3 in Public JWST Fields
Strait, Victoria; Fujimoto, Seiji; Heintz, Kasper E. +24 more
We present the results of a systematic search for candidate quiescent galaxies in the distant universe in 11 JWST fields with publicly available observations collected during the first 3 months of operations and covering an effective sky area of ~145 arcmin2. We homogeneously reduce the new JWST data and combine them with existing obser…
Thermal emission from the Earth-sized exoplanet TRAPPIST-1 b using JWST
Fortney, Jonathan J.; Bell, Taylor J.; Lagage, Pierre-Olivier +3 more
The TRAPPIST-1 system is remarkable for its seven planets that are similar in size, mass, density and stellar heating to the rocky planets Venus, Earth and Mars in the Solar System1. All the TRAPPIST-1 planets have been observed with transmission spectroscopy using the Hubble or Spitzer space telescopes, but no atmospheric features have…
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…
Gaia Data Release 3. Apsis. II. Stellar parameters
Hatzidimitriou, D.; Bouret, J. -C.; Marshall, D. J. +78 more
Context. The third Gaia data release (Gaia DR3) contains, beyond the astrometry and photometry, dispersed light for hundreds of millions of sources from the Gaia prism spectra (BP and RP) and the spectrograph (RVS). This data release opens a new window on the chemo-dynamical properties of stars in our Galaxy, essential knowledge for understanding …