Emission-line properties of IllustrisTNG galaxies: from local diagnostic diagrams to high-redshift predictions for JWST
dc.contributor.author | Hirschmann, M. | |
dc.contributor.author | Charlot, S. | |
dc.contributor.author | Feltre, A. | |
dc.contributor.author | Curtis-Lake, E. | |
dc.contributor.author | Somerville, R.S. | |
dc.contributor.author | Chevallard, J. | |
dc.contributor.author | Choi, E. | |
dc.contributor.author | Nelson, D. | |
dc.contributor.author | Morisset, C. | |
dc.contributor.author | Plat, A. | |
dc.contributor.author | Vidal-Garcia, A. | |
dc.date.accessioned | 2024-03-20T00:37:09Z | |
dc.date.available | 2024-03-20T00:37:09Z | |
dc.date.issued | 2023-10-09 | |
dc.identifier.citation | Michaela Hirschmann, Stephane Charlot, Anna Feltre, Emma Curtis-Lake, Rachel S Somerville, Jacopo Chevallard, Ena Choi, Dylan Nelson, Christophe Morisset, Adele Plat, Alba Vidal-Garcia, Emission-line properties of IllustrisTNG galaxies: from local diagnostic diagrams to high-redshift predictions for JWST, Monthly Notices of the Royal Astronomical Society, Volume 526, Issue 3, December 2023, Pages 3610–3636, https://doi.org/10.1093/mnras/stad2955 | |
dc.identifier.issn | 0035-8711 | |
dc.identifier.doi | 10.1093/mnras/stad2955 | |
dc.identifier.uri | http://hdl.handle.net/10150/671356 | |
dc.description.abstract | We compute synthetic, rest-frame optical and ultraviolet (UV) emission-line properties of galaxy populations at redshifts from z ≈ 0 to = 8 in a full cosmological framework. We achieve this by coupling, in post-processing, the cosmological IllustrisTNG simulations with new-generation nebular-emission models, accounting for line emission from young stars, post-asymptotic giant branch (PAGB) stars, accreting black holes (BHs) and, for the first time, fast radiative shocks. The optical emission-line properties of simulated galaxies dominated by different ionizing sources in our models are largely consistent with those expected from classical diagnostic diagrams and reflect the observed increase in [O III]/Hβ at fixed [N II]/Hα and the evolution of the Hα, [O III]λ5007, and [O II] λ3727 luminosity functions from z ≈ 0 to ∼ 2. At higher redshift, we find that the emission-line galaxy population is dominated by star-forming and active galaxies, with negligible fractions of shock- and PAGB-dominated galaxies. We highlight 10 UV-diagnostic diagrams able to robustly identify the dominant ionizing sources in high-redshift galaxies. We also compute the evolution of several optical- and UV-line-luminosity functions from z = 4 to 7, and the number of galaxies expected to be detectable per field of view in deep, medium-resolution spectroscopic observations with the NIRSpec instrument on board the JWST. We find that 2-h-long exposures are sufficient to achieve unbiased censuses of Hα and [O III]λ5007 emitters, while at least 5 h are required for Hβ, and even 10 h will detect only progressively smaller fractions of [O II] λ3727, O III] λ1663, C III] λ1908, C IV λ1550, [N II]λ6584, Si III] λ1888, and He II λ1640 emitters, especially in the presence of dust. © 2023 The Author(s). | |
dc.language.iso | en | |
dc.publisher | Oxford University Press | |
dc.rights | © 2023 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society. This is an Open Access article distributed under the terms of the Creative Commons Attribution License. | |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | |
dc.subject | galaxies: active | |
dc.subject | galaxies: evolution | |
dc.subject | galaxies: high-redshift | |
dc.subject | galaxies: ISM | |
dc.subject | methods: numerical | |
dc.subject | quasars: emission lines | |
dc.title | Emission-line properties of IllustrisTNG galaxies: from local diagnostic diagrams to high-redshift predictions for JWST | |
dc.type | Article | |
dc.type | text | |
dc.contributor.department | Steward Observatory, University of Arizona | |
dc.identifier.journal | Monthly Notices of the Royal Astronomical Society | |
dc.description.note | Open access article | |
dc.description.collectioninformation | This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu. | |
dc.eprint.version | Final Published Version | |
dc.source.journaltitle | Monthly Notices of the Royal Astronomical Society | |
refterms.dateFOA | 2024-03-20T00:37:09Z |