The Astrophysical Journal (Jan 2024)
Searching for Emission Lines at z > 11: The Role of Damped Lyα and Hints About the Escape of Ionizing Photons
- Kevin N. Hainline,
- Francesco D’Eugenio,
- Peter Jakobsen,
- Jacopo Chevallard,
- Stefano Carniani,
- Joris Witstok,
- Zhiyuan Ji,
- Emma Curtis-Lake,
- Benjamin D. Johnson,
- Brant Robertson,
- Sandro Tacchella,
- Mirko Curti,
- Stephane Charlot,
- Jakob M. Helton,
- Santiago Arribas,
- Rachana Bhatawdekar,
- Andrew J. Bunker,
- Alex J. Cameron,
- Eiichi Egami,
- Daniel J. Eisenstein,
- Ryan Hausen,
- Nimisha Kumari,
- Roberto Maiolino,
- Pablo G. Pérez-González,
- Marcia Rieke,
- Aayush Saxena,
- Jan Scholtz,
- Renske Smit,
- Fengwu Sun,
- Christina C. Williams,
- Christopher N. A. Willmer,
- Chris Willott
Affiliations
- Kevin N. Hainline
- ORCiD
- Steward Observatory, University of Arizona , 933 North Cherry Avenue, Tucson, AZ 85721, USA
- Francesco D’Eugenio
- ORCiD
- Kavli Institute for Cosmology, University of Cambridge , Madingley Road, Cambridge, CB3 0HA, UK; Cavendish Laboratory, University of Cambridge , 19 JJ Thomson Avenue, Cambridge, CB3 0HE, UK
- Peter Jakobsen
- ORCiD
- Cosmic Dawn Center (DAWN) , Copenhagen, Denmark; Niels Bohr Institute, University of Copenhagen , Jagtvej 128, DK-2200, Copenhagen, Denmark
- Jacopo Chevallard
- ORCiD
- Department of Physics, University of Oxford , Denys Wilkinson Building, Keble Road, Oxford, OX1 3RH, UK
- Stefano Carniani
- ORCiD
- Scuola Normale Superiore , Piazza dei Cavalieri 7, I-56126 Pisa, Italy
- Joris Witstok
- ORCiD
- Kavli Institute for Cosmology, University of Cambridge , Madingley Road, Cambridge, CB3 0HA, UK; Cavendish Laboratory, University of Cambridge , 19 JJ Thomson Avenue, Cambridge, CB3 0HE, UK
- Zhiyuan Ji
- ORCiD
- Steward Observatory, University of Arizona , 933 North Cherry Avenue, Tucson, AZ 85721, USA
- Emma Curtis-Lake
- ORCiD
- Centre for Astrophysics Research, Department of Physics, Astronomy and Mathematics, University of Hertfordshire , Hatfield, AL10 9AB, UK
- Benjamin D. Johnson
- ORCiD
- Center for Astrophysics ∣ Harvard & Smithsonian , 60 Garden St., Cambridge, MA 02138, USA
- Brant Robertson
- ORCiD
- Department of Astronomy and Astrophysics, University of California , Santa Cruz, 1156 High Street, Santa Cruz, CA 96054, USA
- Sandro Tacchella
- ORCiD
- Kavli Institute for Cosmology, University of Cambridge , Madingley Road, Cambridge, CB3 0HA, UK; Cavendish Laboratory, University of Cambridge , 19 JJ Thomson Avenue, Cambridge, CB3 0HE, UK
- Mirko Curti
- ORCiD
- European Southern Observatory , Karl-Schwarzschild-Strasse 2, 85748 Garching, Germany
- Stephane Charlot
- ORCiD
- Sorbonne Université , CNRS, UMR 7095, Institut d’Astrophysique de Paris, 98 bis bd Arago, 75014 Paris, France
- Jakob M. Helton
- ORCiD
- Steward Observatory, University of Arizona , 933 North Cherry Avenue, Tucson, AZ 85721, USA
- Santiago Arribas
- ORCiD
- Centro de Astrobiología (CAB) , CSIC-INTA, Cra. de Ajalvir Km. 4, 28850- Torrejón de Ardoz, Madrid, Spain
- Rachana Bhatawdekar
- ORCiD
- European Space Agency (ESA), European Space Astronomy Centre (ESAC) , Camino Bajo del Castillo s/n, 28692 Villanueva de la Cañada, Madrid, Spain; European Space Agency , ESA/ESTEC, Keplerlaan 1, 2201 AZ Noordwijk, The Netherlands
- Andrew J. Bunker
- ORCiD
- Department of Physics, University of Oxford , Denys Wilkinson Building, Keble Road, Oxford, OX1 3RH, UK
- Alex J. Cameron
- ORCiD
- Department of Physics, University of Oxford , Denys Wilkinson Building, Keble Road, Oxford, OX1 3RH, UK
- Eiichi Egami
- ORCiD
- Steward Observatory, University of Arizona , 933 North Cherry Avenue, Tucson, AZ 85721, USA
- Daniel J. Eisenstein
- ORCiD
- Center for Astrophysics ∣ Harvard & Smithsonian , 60 Garden St., Cambridge, MA 02138, USA
- Ryan Hausen
- ORCiD
- Department of Physics and Astronomy, The Johns Hopkins University , 3400 N. Charles St. Baltimore, MD 21218, USA
- Nimisha Kumari
- ORCiD
- AURA for European Space Agency, Space Telescope Science Institute , 3700 San Martin Drive. Baltimore, MD 21210, USA
- Roberto Maiolino
- ORCiD
- Kavli Institute for Cosmology, University of Cambridge , Madingley Road, Cambridge, CB3 0HA, UK; Cavendish Laboratory, University of Cambridge , 19 JJ Thomson Avenue, Cambridge, CB3 0HE, UK; Department of Physics and Astronomy, University College London , Gower Street, London, WC1E 6BT, UK
- Pablo G. Pérez-González
- ORCiD
- Centro de Astrobiología (CAB) , CSIC-INTA, Cra. de Ajalvir Km. 4, 28850- Torrejón de Ardoz, Madrid, Spain
- Marcia Rieke
- ORCiD
- Steward Observatory, University of Arizona , 933 North Cherry Avenue, Tucson, AZ 85721, USA
- Aayush Saxena
- ORCiD
- Department of Physics, University of Oxford , Denys Wilkinson Building, Keble Road, Oxford, OX1 3RH, UK; Department of Physics and Astronomy, University College London , Gower Street, London, WC1E 6BT, UK
- Jan Scholtz
- Kavli Institute for Cosmology, University of Cambridge , Madingley Road, Cambridge, CB3 0HA, UK; Cavendish Laboratory, University of Cambridge , 19 JJ Thomson Avenue, Cambridge, CB3 0HE, UK
- Renske Smit
- ORCiD
- Astrophysics Research Institute, Liverpool John Moores University , 146 Brownlow Hill, Liverpool, L3 5RF, UK
- Fengwu Sun
- ORCiD
- Steward Observatory, University of Arizona , 933 North Cherry Avenue, Tucson, AZ 85721, USA
- Christina C. Williams
- ORCiD
- NSF's National Optical-Infrared Astronomy Research Laboratory , 950 North Cherry Avenue, Tucson, AZ 85719, USA
- Christopher N. A. Willmer
- ORCiD
- Steward Observatory, University of Arizona , 933 North Cherry Avenue, Tucson, AZ 85721, USA
- Chris Willott
- ORCiD
- NRC Herzberg , 5071 West Saanich Rd, Victoria, BC V9E 2E7, Canada
- DOI
- https://doi.org/10.3847/1538-4357/ad8447
- Journal volume & issue
-
Vol. 976,
no. 2
p. 160
Abstract
We describe new ultradeep James Webb Space Telescope (JWST) NIRSpec PRISM and grating spectra for the galaxies JADES-GS-z11-0 ( ${z}_{\mathrm{spec}}={11.122}_{-0.003}^{+0.005}$ ) and JADES-GS-z13-0 ( ${z}_{\mathrm{spec}}={13.20}_{-0.04}^{+0.03}$ ), the most distant spectroscopically confirmed galaxy discovered in the first year of JWST observations. The extraordinary depth of these observations (75 hr and 56 hr, respectively) provides a unique opportunity to explore the redshifts, stellar properties, UV magnitudes, and slopes for these two sources. For JADES-GS-z11-0, we find evidence for multiple emission lines, including [O ii ] λ λ 3726, 3729 and [Ne iii ] λ 3869, resulting in a spectroscopic redshift we determine with 94% confidence. We present stringent upper limits on the emission-line fluxes and line equivalent widths for JADES-GS-z13-0. At this spectroscopic redshift, the Ly α break in JADES-GS-z11-0 can be fit with a damped Ly α absorber with $\mathrm{log}({N}_{\mathrm{HI}}/{\mathrm{cm}}^{-2})={22.42}_{-0.120}^{+0.093}$ . These results demonstrate how neutral hydrogen fraction and Lyman-damping wings may impact the recovery of spectroscopic redshifts for sources like these, providing insight into the overprediction of the photometric redshifts seen for distant galaxies observed with JWST. In addition, we analyze updated NIRCam photometry to calculate the morphological properties of these resolved sources, and find a secondary source 0.″3 south of JADES-GS-z11-0 at a similar photometric redshift, hinting at how galaxies grow through interactions in the early Universe.
Keywords
