SIBELIUS-DARK: a galaxy catalogue of the local volume from a constrained realization simulation. Issue 4 (8th February 2022)
- Record Type:
- Journal Article
- Title:
- SIBELIUS-DARK: a galaxy catalogue of the local volume from a constrained realization simulation. Issue 4 (8th February 2022)
- Main Title:
- SIBELIUS-DARK: a galaxy catalogue of the local volume from a constrained realization simulation
- Authors:
- McAlpine, Stuart
Helly, John C
Schaller, Matthieu
Sawala, Till
Lavaux, Guilhem
Jasche, Jens
Frenk, Carlos S
Jenkins, Adrian
Lucey, John R
Johansson, Peter H - Abstract:
- ABSTRACT: We present sibelius-dark, a constrained realization simulation of the local volume to a distance of 200 Mpc from the Milky Way. sibelius-dark is the first study of the ' Simulations Beyond The Local Universe ' (sibelius ) project, which has the goal of embedding a model Local Group-like system within the correct cosmic environment. The simulation is dark-matter-only, with the galaxy population calculated using the semi-analytic model of galaxy formation, galform . We demonstrate that the large-scale structure that emerges from the sibelius constrained initial conditions matches well the observational data. The inferred galaxy population of sibelius-dark also match well the observational data, both statistically for the whole volume and on an object-by-object basis for the most massive clusters. For example, the K -band number counts across the whole sky, and when divided between the northern and southern Galactic hemispheres, are well reproduced by sibelius-dark . We find that the local volume is somewhat unusual in the wider context of ΛCDM: it contains an abnormally high number of supermassive clusters, as well as an overall large-scale underdensity at the level of ≈5 per cent relative to the cosmic mean. However, whilst rare, the extent of these peculiarities does not significantly challenge the ΛCDM model. sibelius-dark is the most comprehensive constrained realization simulation of the local volume to date, and with this paper we publicly release the halo andABSTRACT: We present sibelius-dark, a constrained realization simulation of the local volume to a distance of 200 Mpc from the Milky Way. sibelius-dark is the first study of the ' Simulations Beyond The Local Universe ' (sibelius ) project, which has the goal of embedding a model Local Group-like system within the correct cosmic environment. The simulation is dark-matter-only, with the galaxy population calculated using the semi-analytic model of galaxy formation, galform . We demonstrate that the large-scale structure that emerges from the sibelius constrained initial conditions matches well the observational data. The inferred galaxy population of sibelius-dark also match well the observational data, both statistically for the whole volume and on an object-by-object basis for the most massive clusters. For example, the K -band number counts across the whole sky, and when divided between the northern and southern Galactic hemispheres, are well reproduced by sibelius-dark . We find that the local volume is somewhat unusual in the wider context of ΛCDM: it contains an abnormally high number of supermassive clusters, as well as an overall large-scale underdensity at the level of ≈5 per cent relative to the cosmic mean. However, whilst rare, the extent of these peculiarities does not significantly challenge the ΛCDM model. sibelius-dark is the most comprehensive constrained realization simulation of the local volume to date, and with this paper we publicly release the halo and galaxy catalogues at z = 0, which we hope will be useful to the wider astronomy community. … (more)
- Is Part Of:
- Monthly notices of the Royal Astronomical Society. Volume 512:Issue 4(2022)
- Journal:
- Monthly notices of the Royal Astronomical Society
- Issue:
- Volume 512:Issue 4(2022)
- Issue Display:
- Volume 512, Issue 4 (2022)
- Year:
- 2022
- Volume:
- 512
- Issue:
- 4
- Issue Sort Value:
- 2022-0512-0004-0000
- Page Start:
- 5823
- Page End:
- 5847
- Publication Date:
- 2022-02-08
- Subjects:
- methods: numerical -- galaxies: formation -- cosmology: theory -- dark matter -- large-scale structure of Universe
Astronomy -- Periodicals
Periodicals
520.5 - Journal URLs:
- http://mnras.oxfordjournals.org/ ↗
http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1365-2966 ↗
http://www.blackwell-synergy.com/issuelist.asp?journal=mnr ↗
http://www.blackwell-synergy.com/loi/mnr ↗
http://ukcatalogue.oup.com/ ↗ - DOI:
- 10.1093/mnras/stac295 ↗
- Languages:
- English
- ISSNs:
- 0035-8711
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - 5943.000000
British Library DSC - BLDSS-3PM
British Library HMNTS - ELD Digital store - Ingest File:
- 21288.xml