Vimal Simha
Modelling galaxy merger time-scales and tidal destruction
Simha, Vimal; Cole, Shaun
Authors
Professor Shaun Cole shaun.cole@durham.ac.uk
Director of the Institute for Computational Cosmology
Abstract
We present a model for the dynamical evolution of subhaloes based on an approach combining numerical and analytical methods. Our method is based on tracking subhaloes in an N-body simulation up to the latest epoch that it can be resolved, and applying an analytic prescription for its merger time-scale that takes dynamical friction and tidal disruption into account. When applied to cosmological N-body simulations with mass resolutions that differ by two orders of magnitude, the technique produces halo occupation distributions that agree to within 3 per cent. This model has now been implemented in the GALFORM semi-analytic model of galaxy formation.
Citation
Simha, V., & Cole, S. (2017). Modelling galaxy merger time-scales and tidal destruction. Monthly Notices of the Royal Astronomical Society, 472(2), 1392-1400. https://doi.org/10.1093/mnras/stx1942
Journal Article Type | Article |
---|---|
Acceptance Date | Jul 27, 2017 |
Online Publication Date | Aug 2, 2017 |
Publication Date | Dec 1, 2017 |
Deposit Date | Nov 1, 2017 |
Publicly Available Date | Nov 1, 2017 |
Journal | Monthly Notices of the Royal Astronomical Society |
Print ISSN | 0035-8711 |
Electronic ISSN | 1365-2966 |
Publisher | Royal Astronomical Society |
Peer Reviewed | Peer Reviewed |
Volume | 472 |
Issue | 2 |
Pages | 1392-1400 |
DOI | https://doi.org/10.1093/mnras/stx1942 |
Public URL | https://durham-repository.worktribe.com/output/1372461 |
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Copyright Statement
This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2017 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.
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