English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Atomic and molecular gas in IllustrisTNG galaxies at low redshift

Diemer, B., Stevens, A. R. H., Lagos, C. d. P., Calette, A. R., Tacchella, S., Hernquist, L., et al. (2019). Atomic and molecular gas in IllustrisTNG galaxies at low redshift. Monthly Notices of the Royal Astronomical Society, 487(2), 1529-1550. doi:10.1093/mnras/stz1323.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/21.11116/0000-0004-62ED-3 Version Permalink: http://hdl.handle.net/21.11116/0000-0004-62EE-2
Genre: Journal Article

Files

show Files
hide Files
:
Atomic and molecular gas in IllustrisTNG galaxies at low redshift.pdf (Any fulltext), 4MB
 
File Permalink:
-
Name:
Atomic and molecular gas in IllustrisTNG galaxies at low redshift.pdf
Description:
-
Visibility:
Private
MIME-Type / Checksum:
application/pdf
Technical Metadata:
Copyright Date:
-
Copyright Info:
-
License:
-

Locators

show

Creators

show
hide
 Creators:
Diemer, Benedikt, Author
Stevens, Adam R. H., Author
Lagos, Claudia del P., Author
Calette, A. R., Author
Tacchella, Sandro, Author
Hernquist, Lars, Author
Marinacci, Federico, Author
Nelson, Dylan1, Author              
Pillepich, Annalisa, Author
Rodriguez-Gomez, Vicente, Author
Villaescusa-Navarro, Francisco, Author
Vogelsberger, Mark, Author
Affiliations:
1Galaxy Formation, MPI for Astrophysics, Max Planck Society, ou_2205643              

Content

show
hide
Free keywords: -
 Abstract: We have recently developed a post-processing framework to estimate the abundance of atomic and molecular hydrogen (H i and H2, respectively) in galaxies in large-volume cosmological simulations. Here we compare the H i and H2 content of IllustrisTNG galaxies to observations. We mostly restrict this comparison to z ≈ 0 and consider six observational metrics: the overall abundance of H i and H2, their mass functions, gas fractions as a function of stellar mass, the correlation between H2 and star formation rate, the spatial distribution of gas, and the correlation between gas content and morphology. We find generally good agreement between simulations and observations, particularly for the gas fractions and the H i mass–size relation. The H2 mass correlates with star formation rate as expected, revealing an almost constant depletion time that evolves up to z = 2 as observed. However, we also discover a number of tensions with varying degrees of significance, including an overestimate of the total neutral gas abundance at z = 0 by about a factor of 2 and a possible excess of satellites with no or very little neutral gas. These conclusions are robust to the modelling of the H i/H2 transition. In terms of their neutral gas properties, the IllustrisTNG simulations represent an enormous improvement over the original Illustris run. All data used in this paper are publicly available as part of the IllustrisTNG data release.

Details

show
hide
Language(s):
 Dates: 2019-05-14
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1093/mnras/stz1323
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Monthly Notices of the Royal Astronomical Society
  Other :
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: OXFORD : OXFORD UNIV PRESS
Pages: - Volume / Issue: 487 (2) Sequence Number: - Start / End Page: 1529 - 1550 Identifier: ISSN: 0035-8711
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000021470