Abstract
We test the history of structure formation from redshift 1 to today by matching galaxies from VIPERS and SDSS with dark matter haloes in the MultiDark SMDPL N-body simulation. We first show that the standard subhalo abundance matching (SHAM) recipe implemented with MultiDark characterizes the clustering of galaxies well both at redshift 0 for SDSS and at redshift 1 for VIPERS. This is an important validation of the SHAM model at high redshift. We then remap the simulation timesteps to test alternative growth histories and infer the growth index $\gamma=0.6\pm0.3$. This analysis demonstrates the power of using N-body simulations to forward model galaxy surveys for cosmological inference.
| Original language | English |
|---|---|
| Pages (from-to) | 653-662 |
| Number of pages | 10 |
| Journal | Monthly Notices of the Royal Astronomical Society |
| Volume | 489 |
| Issue number | 1 |
| Early online date | 20 Aug 2019 |
| DOIs | |
| Publication status | Published - 1 Oct 2019 |
Keywords
- astro-ph.CO
- galaxies: statistics
- cosmology: observations
- large-scale structure of Universe
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Data availability statement for 'Measuring the growth of structure by matching dark matter haloes to galaxies with VIPERS and SDSS'.
Granett, B. R. (Creator), Favole, G. (Creator), Montero-Dorta, A. D. (Creator), Branchini, E. (Creator), Guzzo, L. (Creator) & de la Torre, S. (Creator), Oxford University Press, 20 Aug 2019
https://github.com/darklight-cosmology/vipers-sham
Dataset