articleThe Astrophysical Journal LettersJan 28, 2026GOLD OA

CECILIA: Gas-phase Physical Conditions and Multielement Chemistry at Cosmic Noon

NSNoah S. J. RogersALAllison L. StromGCGwen C. RudieRFRyan F. TrainorCVCaroline von Raesfeld
Indexed incrossrefdoaj

Abstract

Abstract Galaxies at Cosmic Noon ( z ∼ 2–3) are characterized by rapid star formation that will lead to significant metal enrichment in the interstellar medium (ISM). While much observational evidence suggests that these galaxies are chemically distinct from those in the local Universe, directly measuring the ISM chemistry in large samples of high- z galaxies is only now possible with the observational capabilities of JWST. In this first key paper of the CECILIA program, we present the direct-method physical conditions and multielement abundances in 20 galaxies at Cosmic Noon. Using a combination of archival Keck/MOSFIRE and new ∼30 hr NIRSpec spectroscopy, we measure multiple electron gas densities and the…

Citation impact

4
total citations
FWCI
47.33
Percentile
99%
References
200
Too recent for citation history.

Authors

12

Topics & keywords

Topics
Keywords
  • Galaxy
  • COSMIC cancer database
  • Noon
  • Interstellar medium
  • Photoionization
  • Star formation
  • Cosmic ray
No related works found for this paper.

Funding