Damped Ly α absorbers and atomic hydrogen in galaxies: the view of the GAEA model
Abstract
ABSTRACT Using the GAEA semi-analytic model, we analyse the connection between Damped Ly α systems (DLAs) and H i in galaxies. Our state-of-the-art semi-analytic model is tuned to reproduce the local galaxy H i mass function, and that also reproduces other important galaxy properties, including the galaxy mass–gas metallicity relation. To produce catalogues of simulated DLAs we throw 105 random lines of sight in a composite simulated volume: dark matter haloes with log$$(\frac{M_{200}}{ {\rm M}_{\odot }}) \ge 11.5$$ are extracted from the Millennium Simulation, while for $$9.2 \le \log (\frac{M_{200}}{ \mathrm{M}_{\odot }})\lt 11.5$$ we use the Millennium II, and for $$8 \le \log (\frac{M_{200}}{\mathrm{M}_{\odot }}) \lt 9.2$$ a halo occupation distribution model. At 2 < z < 3, where observational data are more accurate, our fiducial model predicts the correct shape of the column density distribution function, but its normalization falls short of the observations, with the discrepancy increasing at higher redshift. The agreement with observations is significantly improved increasing both the H i masses and the disc radii of model galaxies by a factor of 2, as implemented ‘a posteriori’ in our 2M−2R model. In the redshift range of interest, haloes with $$M_{200} \ge {10}^{11} \, \mathrm{M}_{\odot }$$ give the major contribution to ΩDLA, and the typical DLA host halo mass is $$\sim \!{10}^{11} \, \mathrm{M}_{\odot }$$. The simulated DLA metallicity distribution is in relatively good agreement with observations, but our model predicts an excess of DLAs at low metallicities. Our results suggest possible improvements for the adopted modelling of the filtering mass and metal ejection in low-mass haloes.
- Authors:
-
[1];
[3];
[4]
- Dipartimento di Fisica dell’ Università di Trieste, Sezione di Astronomia, via Tiepolo 11, I-34131 Trieste, Italy, INAF–Osservatorio Astronomico di Trieste, Via G.B. Tiepolo, 11, I-34143 Trieste, Italy, IFPU–Institute for Fundamental Physics of the Universe, via Beirut 2, I-34151 Trieste, Italy, INFN–National Institute for Nuclear Physics, via Valerio 2, I-34127 Trieste
- INAF–Osservatorio Astronomico di Trieste, Via G.B. Tiepolo, 11, I-34143 Trieste, Italy, IFPU–Institute for Fundamental Physics of the Universe, via Beirut 2, I-34151 Trieste, Italy, INFN–National Institute for Nuclear Physics, via Valerio 2, I-34127 Trieste
- INAF–Osservatorio Astronomico di Trieste, Via G.B. Tiepolo, 11, I-34143 Trieste, Italy
- Tianjin Normal University, Binshuixidao 393, Tianjin, China
- Publication Date:
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1646706
- Resource Type:
- Published Article
- Journal Name:
- Monthly Notices of the Royal Astronomical Society
- Additional Journal Information:
- Journal Name: Monthly Notices of the Royal Astronomical Society Journal Volume: 497 Journal Issue: 2; Journal ID: ISSN 0035-8711
- Publisher:
- Oxford University Press
- Country of Publication:
- United Kingdom
- Language:
- English
Citation Formats
Di Gioia, Serafina, Cristiani, Stefano, De Lucia, Gabriella, and Xie, Lizhi. Damped Ly α absorbers and atomic hydrogen in galaxies: the view of the GAEA model. United Kingdom: N. p., 2020.
Web. doi:10.1093/mnras/staa2067.
Di Gioia, Serafina, Cristiani, Stefano, De Lucia, Gabriella, & Xie, Lizhi. Damped Ly α absorbers and atomic hydrogen in galaxies: the view of the GAEA model. United Kingdom. https://doi.org/10.1093/mnras/staa2067
Di Gioia, Serafina, Cristiani, Stefano, De Lucia, Gabriella, and Xie, Lizhi. Wed .
"Damped Ly α absorbers and atomic hydrogen in galaxies: the view of the GAEA model". United Kingdom. https://doi.org/10.1093/mnras/staa2067.
@article{osti_1646706,
title = {Damped Ly α absorbers and atomic hydrogen in galaxies: the view of the GAEA model},
author = {Di Gioia, Serafina and Cristiani, Stefano and De Lucia, Gabriella and Xie, Lizhi},
abstractNote = {ABSTRACT Using the GAEA semi-analytic model, we analyse the connection between Damped Ly α systems (DLAs) and H i in galaxies. Our state-of-the-art semi-analytic model is tuned to reproduce the local galaxy H i mass function, and that also reproduces other important galaxy properties, including the galaxy mass–gas metallicity relation. To produce catalogues of simulated DLAs we throw 105 random lines of sight in a composite simulated volume: dark matter haloes with log$(\frac{M_{200}}{ {\rm M}_{\odot }}) \ge 11.5$ are extracted from the Millennium Simulation, while for $9.2 \le \log (\frac{M_{200}}{ \mathrm{M}_{\odot }})\lt 11.5$ we use the Millennium II, and for $8 \le \log (\frac{M_{200}}{\mathrm{M}_{\odot }}) \lt 9.2$ a halo occupation distribution model. At 2 < z < 3, where observational data are more accurate, our fiducial model predicts the correct shape of the column density distribution function, but its normalization falls short of the observations, with the discrepancy increasing at higher redshift. The agreement with observations is significantly improved increasing both the H i masses and the disc radii of model galaxies by a factor of 2, as implemented ‘a posteriori’ in our 2M−2R model. In the redshift range of interest, haloes with $M_{200} \ge {10}^{11} \, \mathrm{M}_{\odot }$ give the major contribution to ΩDLA, and the typical DLA host halo mass is $\sim \!{10}^{11} \, \mathrm{M}_{\odot }$. The simulated DLA metallicity distribution is in relatively good agreement with observations, but our model predicts an excess of DLAs at low metallicities. Our results suggest possible improvements for the adopted modelling of the filtering mass and metal ejection in low-mass haloes.},
doi = {10.1093/mnras/staa2067},
journal = {Monthly Notices of the Royal Astronomical Society},
number = 2,
volume = 497,
place = {United Kingdom},
year = {Wed Jul 22 00:00:00 EDT 2020},
month = {Wed Jul 22 00:00:00 EDT 2020}
}
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The H I content of star-forming galaxies at z= 0.24
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Abundance of damped Lyman α absorbers in cosmological smoothed particle hydrodynamics simulations
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Absorption-line systems in simulated galaxies fed by cold streams: ALSs in simulated galaxies
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Stellar mass to halo mass relation from galaxy clustering in VUDS: a high star formation efficiency at z ≃ 3
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Testing galaxy formation simulations with damped Lyman-α abundance and metallicity evolution
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[C ii] 158 μ m Emission from z ∼ 4 H i Absorption-selected Galaxies
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The current status of galaxy formation
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Damped Lyman α systems in high-resolution hydrodynamical simulations
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The evolution of Ω H i and the epoch of formation of damped Lyman α absorbers
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Which galaxies dominate the neutral gas content of the Universe?
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Do damped and sub-damped Lyman-alpha absorbers arise in galaxies of different masses?
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Sdss-Iii: Massive Spectroscopic Surveys of the Distant Universe, the Milky way, and Extra-Solar Planetary Systems
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The Contribution of H i –rich Galaxies to the Damped Lyα Absorber Population at z = 0
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The Role of Pressure in GMC Formation II: The H 2 ‐Pressure Relation
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METALLICITY EVOLUTION OF DAMPED Lyα SYSTEMS OUT TO z ∼ 5
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Unbiased Differential Size Evolution and the Inside-out Growth of Galaxies in the Deep CANDELS GOODS Fields at 1 ≤ z ≤ 7
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Damped Lyman α absorbers as a probe of stellar feedback
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H i-selected galaxies in hierarchical models of galaxy formation and evolution
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Exploring the dust content of Sloan Digital Sky Survey Data Release 7 damped Lyman α systems at: Dust in high-redshift DLAs
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Observational evidence for constant gas accretion rate since z = 5
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Ingredients for 21 cm Intensity Mapping
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The cosmological bias factor of damped Lyman alpha systems: dependence on metal line strength
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First gas-phase metallicity gradients of 0.1 ≲ z ≲ 0.8 galaxies with MUSE
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Flattening and truncation of stellar discs in edge-on spiral galaxies
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On the evolution of the H i column density distribution in cosmological simulations
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Reconciling the Metallicity Distributions of Gamma‐Ray Burst, Damped Lyα, and Lyman Break Galaxies at z ≈ 3
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Multiphase circumgalactic medium probed with MUSE and ALMA
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Galaxy counterparts of metal-rich damped Lyα absorbers - II. A solar-metallicity and dusty DLA at zabs= 2.58★: Galaxy counterparts of metal-rich DLAs II
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The Population of Damped Lyα and Lyman Limit Systems in the Cold Dark Matter Model
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The star Formation Efficiency in Nearby Galaxies: Measuring Where gas Forms Stars Effectively
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Ly-α and Mg II as Probes of Galaxies and Their Environment
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Differentiating dark energy and modified gravity with galaxy redshift surveys
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Simulations of Damped Lyα and Lyman Limit Absorbers in Different Cosmologies: Implications for Structure Formation at High Redshift
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A ground-based imaging study of galaxies causing damped Lyman α (DLA), sub-DLA and Lyman limit system absorption in quasar spectra★: DLA, sub-DLA and LLS galaxies
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The Sloan Digital sky Survey Quasar Catalog. v. Seventh data Release
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xGASS: total cold gas scaling relations and molecular-to-atomic gas ratios of galaxies in the local Universe
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Physical Models of Galaxy Formation in a Cosmological Framework
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Cosmological smoothed particle hydrodynamics simulations: a hybrid multiphase model for star formation
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