Search Publications
JADES NIRSpec Spectroscopy of GN-z11: Lyman-α emission and possible enhanced nitrogen abundance in a z = 10.60 luminous galaxy
Chevallard, Jacopo; Maseda, Michael V.; Parlanti, Eleonora +60 more
We present JADES JWST/NIRSpec spectroscopy of GN-z11, the most luminous candidate z > 10 Lyman break galaxy in the GOODS-North field with MUV = −21.5. We derive a redshift of z = 10.603 (lower than previous determinations) based on multiple emission lines in our low and medium resolution spectra over 0.7 − 5.3 µm. We significan…
GA-NIFS: A massive black hole in a low-metallicity AGN at z ∼ 5.55 revealed by JWST/NIRSpec IFS
Pérez-González, Pablo G.; Charlot, Stéphane; Carniani, Stefano +20 more
We present rest-frame optical data of the compact z = 5.55 galaxy GS_3073 obtained using the integral field spectroscopy mode of the Near-InfraRed Spectrograph on board the James Webb Space Telescope. The galaxy's prominent broad components in several hydrogen and helium lines (though absent in the forbidden lines) and v detection of a large equiv…
JADES: Probing interstellar medium conditions at z ∼ 5.5-9.5 with ultra-deep JWST/NIRSpec spectroscopy
Chevallard, Jacopo; Maseda, Michael V.; Parlanti, Eleonora +42 more
We present emission-line ratios from a sample of 27 Lyman-break galaxies from z ∼ 5.5 − 9.5 with −17.0 < M1500 < −20.4, measured from ultra-deep JWST/NIRSpec multi-object spectroscopy from the JWST Advanced Deep Extragalactic Survey (JADES). We used a combination of 28 h deep PRISM/CLEAR and 7 h deep G395M/F290LP observations to m…
GA-NIFS: The ultra-dense, interacting environment of a dual AGN at z ∼ 3.3 revealed by JWST/NIRSpec IFS
Maiolino, R.; Jakobsen, P.; Perna, M. +18 more
Context. LBQS 0302−0019 is a blue quasar (QSO) at z ∼ 3.3 that hosts powerful outflows and resides in a complex environment consisting of an obscured active galactic nucleus (AGN) candidate and multiple companions, all within 30 kpc in projection.
Aims: We aim to characterise this complex system using JWST NIRSpec Integral Field Spectrograph …
JADES: Discovery of extremely high equivalent width Lyman-α emission from a faint galaxy within an ionized bubble at z = 7.3
Chevallard, Jacopo; Maseda, Michael V.; Carniani, Stefano +44 more
We report the discovery of a remarkable Lyα emitting galaxy at z = 7.2782, JADES-GS+53.16746−27.7720 (shortened to JADES-GS-z7-LA), with rest-frame equivalent width, EW0(Lyα) = 388.0 ± 88.8 Å and UV magnitude −17.0. The spectroscopic redshift is confirmed via rest-frame optical lines [O II], Hβ and [O III] in its JWST/NIRSpec Micro-Shut…
Closing in on the sources of cosmic reionization: First results from the GLASS-JWST program
Vulcani, B.; Bradač, M.; Brammer, G. +29 more
The escape fraction of Lyman-continuum (LyC) photons (fesc) is a key parameter for determining the sources of cosmic reionization at z ≥ 6. At these redshifts, owing to the opacity of the intergalactic medium, the LyC emission cannot be measured directly. However, LyC leakers during the epoch of reionization could be identified using in…
Bubbles and outflows: The novel JWST/NIRSpec view of the z = 1.59 obscured quasar XID2028
Marconi, A.; Capetti, A.; Brusa, M. +20 more
Quasar feedback in the form of powerful outflows is invoked as a key mechanism to quench star formation in galaxies, although direct observational evidence is still scarce and debated. Here we present Early Release Science JWST NIRSpec IFU observations of the z = 1.59 prototypical obscured Active Galactic Nucleus (AGN) XID2028: This target represe…
GA-NIFS: Black hole and host galaxy properties of two z ≃ 6.8 quasars from the NIRSpec IFU
Pérez-González, Pablo G.; Carniani, Stefano; Übler, Hannah +20 more
Aims: Integral field spectroscopy (IFS) with JWST NIRSpec will significantly improve our understanding of the first quasars, by providing spatially resolved, infrared spectroscopic capabilities that cover key rest-frame optical emission lines that have been previously unobservable.
Methods: Here we present our results from the first two …
JWST's PEARLS: A new lens model for ACT-CL J0102−4915, "El Gordo," and the first red supergiant star at cosmological distances discovered by JWST
Ryan, R. E.; Diego, J. M.; Zitrin, A. +29 more
The first James Webb Space Telescope (JWST) data on the massive colliding cluster
The production of ionizing photons in UV-faint z ∼ 3-7 galaxies
Calabrò, Antonello; Castellano, Marco; Pentericci, Laura +20 more
Aims: The demographics of the production and escape of ionizing photons from UV-faint early galaxies is a key unknown that has hindered attempts to discover the primary drivers of reionization. With the advent of JWST, it is finally possible to observe the rest-frame optical nebular emission from individual sub-L*z > 3 galaxies …