JWST NIRSpec Spectroscopy of the Remarkable Bright Galaxy GHZ2/GLASS-z12 at Redshift 12.34
Astronomical Observatory of Rome · National Institute for Astrophysics · +24 more institutions
Abstract
Abstract We spectroscopically confirm the M UV = −20.5 mag galaxy GHZ2/GLASS-z12 to be at redshift z = 12.34. The source was selected via NIRCam photometry in GLASS-JWST Early Release Science data, providing the first evidence of a surprising abundance of bright galaxies at z ≳ 10. The NIRSpec PRISM spectrum shows detections of N iv , C iv , He ii , O iii , C iii , O ii , and Ne iii lines and the first detection at high redshift of the O iii Bowen fluorescence line at 3133 Å rest frame. The prominent C iv line with rest-frame equivalent width (EW) ≈ 46 Å puts GHZ2 in the category of extreme C iv emitters. GHZ2 displays UV lines with EWs that are only found in active galactic nuclei (AGNs) or composite objects…
Citation impact
- FWCI
- 42.02
- Percentile
- 100%
- References
- 174
Authors
31- MCM. CastellanoCorresponding
Astronomical Observatory of Rome, National Institute for Astrophysics
- LNLorenzo Napolitano
Astronomical Observatory of Rome, Sapienza University of Rome, National Institute for Astrophysics
- AFA. Fontana
Astronomical Observatory of Rome, National Institute for Astrophysics
- GRGuido Roberts-Borsani
University of Geneva
- TTTommaso Treu
University of California, Los Angeles
Topics & keywords
- Physics
- Astrophysics
- Metallicity
- Redshift
- Galaxy
- Active galactic nucleus
- Astronomy
- Equivalent width
Funding
- NANational Aeronautics and Space AdministrationAward: JWST-ERS-1342
- VFVillum FondenAwards: 37459, DNRF140
- STSpace Telescope Science InstituteAward: JWST-ERS-1342
- ECEuropean CommissionAward: PRIN 2022
- NRNational Research Foundation
- DGDanmarks Grundforskningsfond
- MDMinistero dell’Istruzione, dell’Università e della RicercaAwards: MIUR2020 SKSTHZ, PRIN 2022