Yang Wang
The Three Hundred Project: the influence of environment on simulated galaxy properties
Wang, Yang; Pearce, Frazer; Knebe, Alexander; Yepes, Gustavo; Cui, Weiguang; Power, Chris; Arth, Alexander; Gottlöber, Stefan; Petris, Marco De; Brown, Shaun; Feng, Longlong
Authors
FRAZER PEARCE FRAZER.PEARCE@NOTTINGHAM.AC.UK
Professor of Physics
Alexander Knebe
Gustavo Yepes
Weiguang Cui
Chris Power
Alexander Arth
Stefan Gottlöber
Marco De Petris
Shaun Brown
Longlong Feng
Abstract
The relationship between galaxy properties and environment is a widely discussed topic within astrophysics. Here, we use galaxy samples from hydrodynamical resimulations to examine this relationship. We use the overdensity (δ1)within a h-1Mpc sphere around a galaxy to evaluate its environment. Then, the relations between galaxy properties, such as specific star formation rate(sSFR), fraction of star-forming galaxies, g –r color, and δ1 are examined within three galactic samples formed from galaxies within large clusters, those in the vicinity of large clusters, and those in the field. We find tight environmental correlations for these galaxy properties. In brief, galaxies in denser environments tend to be redder and are more likely to be quenched; this is consistent with observations. We find that although the sSFR decreases with δ1, this is mainly because galaxies with higher stellar mass reside in an environment with higher overdensity. At fixed overdensity, a galaxy’s color is also independent of whether it lives within a cluster or within the field, but the relative fractions of the two samples varies dramatically with overdensity, and this drives an apparent evolution.
Citation
Wang, Y., Pearce, F., Knebe, A., Yepes, G., Cui, W., Power, C., …Feng, L. (2018). The Three Hundred Project: the influence of environment on simulated galaxy properties. Astrophysical Journal, 868(2), Article 130. https://doi.org/10.3847/1538-4357/aae52e
Journal Article Type | Article |
---|---|
Acceptance Date | Sep 28, 2018 |
Online Publication Date | Nov 30, 2018 |
Publication Date | Dec 1, 2018 |
Deposit Date | Dec 21, 2018 |
Publicly Available Date | Mar 28, 2024 |
Journal | The Astrophysical Journal |
Print ISSN | 0004-637X |
Electronic ISSN | 1538-4357 |
Publisher | American Astronomical Society |
Peer Reviewed | Peer Reviewed |
Volume | 868 |
Issue | 2 |
Article Number | 130 |
DOI | https://doi.org/10.3847/1538-4357/aae52e |
Keywords | Space and Planetary Science; Astronomy and Astrophysics |
Public URL | https://nottingham-repository.worktribe.com/output/1437236 |
Publisher URL | http://iopscience.iop.org/article/10.3847/1538-4357/aae52e/meta |
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