The environmental dependence of the stellar and gas-phase mass-metallicity relation at 2 < z < 4

Vista sencilla de ítem
dc.contributor.authorCalabrò, A.
dc.contributor.authorGuaita, L.
dc.contributor.authorPentericci, L.
dc.contributor.authorFontanot, F.
dc.contributor.authorCastellano, M.
dc.contributor.authorDe Lucia, G.
dc.contributor.authorGarofalo, T.
dc.contributor.authorSantini, P.
dc.contributor.authorCullen, F.
dc.contributor.authorCarnall, A.
dc.contributor.authorGarilli, B.
dc.contributor.authorTalia, M.
dc.contributor.authorCresci, G.
dc.contributor.authorFranco, M.
dc.contributor.authorFynbo, J.P.U.
dc.contributor.authorHathi, N.P.
dc.contributor.authorHirschmann, M.
dc.contributor.authorKoekemoer, A.
dc.contributor.authorLlerena, M.
dc.contributor.authorXie, L.
dc.date.accessioned2023-11-06T16:26:55Z
dc.date.available2023-11-06T16:26:55Z
dc.date.issued2022-08-01
dc.descriptionIndexación: Scopus.es
dc.description.abstractIn the local universe, galaxies in clusters typically show different physical and chemical properties compared to more isolated systems. Understanding how this difference originates, and whether it is already in place at high redshift, is still a matter of debate. Thanks to uniquely deep optical spectra available from the VANDELS survey, we investigate environmental effects on the stellar mass- metallicity relation (MZR) for a sample of nearly 1000 star-forming galaxies in the redshift range 2 < z < 4. We complement our dataset with the MOSFIRE follow-up of 21 galaxies to study the environmental dependence of the gas-phase MZR. Robust stellar and gas-phase metallicities are derived from well-calibrated photospheric absorptions features, respectively at 1501 and 1719Å in the stacked spectra, and from optical emission lines ([OII]λ λ3726-3729, [OIII] λ5007, and Hβ) in individual systems.We characterize the environment through multiple criteria by using the local galaxy density maps derived in the VANDELS fields to identify overdense structures and protoclusters of varying sizes. We find that environmental effects are weak at redshifts 2 < z < 4, and they are more important around the densest overdensity structures and protoclusters, where galaxies have a lower stellar metallicity (by ∼0:2 dex) and a lower gas-phase metallicity (by 0.1 dex) compared to the field, with a significance of 1σ and 2σ, respectively. Crucially, this downward offset cannot be explained by a selection effect due to a higher star formation rate, a fainter UV continuum, or different dust attenuations and stellar ages for galaxies in overdense enviroments with respect to the field. In spite of the still low signal-to-noise ratio of our results, we consider possible explanations of this environmental dependence. We propose a combination of increased mergers and high-speed encounters, more efficient AGN feedback in dense cores, and cold gas inflows from the cosmic web as viable physical mechanisms diluting the metal content of the cold gas reservoirs of overdense galaxies or expelling their metals to the intergalactic medium, even though additional studies are needed to determine the most significant scenario. Finally, some tensions remain between observations and both semi-analytic models and hydrodynamical simulations, which predict no significant metallicity offset as a function of host halo mass, suggesting that an explicit implementation of environmental processes in dense protocluster cores is needed. © ESO 2022.es
dc.description.urihttps://www.aanda.org/articles/aa/full_html/2022/08/aa42615-21/aa42615-21.html
dc.identifier.citationAstronomy and Astrophysics, Volume 664, 1 August 2022, Article number A75es
dc.identifier.doi10.1051/0004-6361/202142615
dc.identifier.issn0004-6361
dc.identifier.urihttps://repositorio.unab.cl/xmlui/handle/ria/53842
dc.language.isoenes
dc.publisherEDP Scienceses
dc.rights.licenseCC BY 4.0 DEED Attribution 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/deed.en
dc.subjectGalaxies: abundanceses
dc.subjectGalaxies: clusters: generales
dc.subjectGalaxies: evolutiones
dc.subjectGalaxies: high-redshiftes
dc.subjectGalaxies: star formationes
dc.subjectLarge-scale structure of Universees
dc.titleThe environmental dependence of the stellar and gas-phase mass-metallicity relation at 2 < z < 4es
dc.typeArtículoes
Archivos
Bloque original
Mostrando 1 - 1 de 1
No hay miniatura disponible
Nombre:
Calabro_The_environmental_dependence_of_the.pdf
Tamaño:
12.09 MB
Formato:
Adobe Portable Document Format
Descripción:
TEXTO COMPLETO EN INGLES
Descargar
Bloque de licencias
Mostrando 1 - 1 de 1
No hay miniatura disponible
Nombre:
license.txt
Tamaño:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descripción:
Descargar
Colecciones
FCE - Artículos de Revista