|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'504'928
Articles rated: 2609
26 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
Constraining Scatter in the Stellar Mass--Halo Mass Relation for Haloes Less Massive than the Milky Way | | Magdelena Allen
; Peter Behroozi
; Chung-Pei Ma
; | | Date: |
14 Dec 2018 | | Abstract: | Most galaxies are hosted by massive, invisible dark matter haloes, yet little
is known about the scatter in the stellar mass--halo mass relation for galaxies
with host halo masses $M_{h}le 10^{11} M_{odot}$. Using mock catalogs based
on dark matter simulations, we find that two observable signatures are
sensitive to scatter in the stellar mass--halo mass relation even at these mass
scales; i.e., conditional stellar mass functions and velocity distribution
functions for neighbouring galaxies. We compute these observables for 179,373
galaxies in the Sloan Digital Sky Survey (SDSS) with stellar masses $M_{ast} >
10^9 M_{odot}$ and redshifts 0.01 $< z <$ 0.307. We then compare to mock
observations generated from the Bolshoi-Planck dark matter simulation for
stellar mass--halo mass scatters ranging from 0 to 0.6 dex. The observed
results are consistent with simulated results for low values of scatter
($sim$0.2 dex), but SDSS statistics are insufficient to provide firm
constraints. This method could provide much tighter constraints on stellar
mass--halo mass scatter in the future if applied to larger data sets,
especially the anticipated Dark Energy Spectroscopic Instrument Bright Galaxy
Survey, and constraining the scatter could have important implications for
galaxy formation and evolution. | | Source: | arXiv, 1812.5733 | | Services: | Forum | Review | PDF | Favorites | |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
|
| |
|
|
|
|
News, job offers and information for researchers and scientists:
| |
REGISTER