Journal
ASTROPHYSICAL JOURNAL LETTERS
Volume 733, Issue 1, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/2041-8205/733/1/L7
Keywords
galaxies: formation; galaxies: halos; galaxies: structure; Galaxy: halo; Galaxy: kinematics and dynamics; Galaxy: structure
Categories
Funding
- European Research Council [GALACTICA-240271]
- STFC
- Leverhulme Research Fellowship
- Royal Society
- STFC [ST/I00162X/1, ST/H008519/1, ST/F002289/1, ST/I001166/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/I001166/1, ST/H008519/1, ST/I00162X/1, ST/F002289/1] Funding Source: researchfish
Ask authors/readers for more resources
We characterize the substructure in the simulated stellar halos of Cooper et al. which were formed by the disruption of satellite galaxies within the cosmological N-body simulations of galactic halos of the Aquarius project. These stellar halos exhibit a wealth of tidal features: broad overdensities and very narrow faint streams akin to those observed around the Milky Way. The substructures are distributed anisotropically on the sky, a characteristic that should become apparent in the next generation of photometric surveys. The normalized RMS of the density of stars on the sky appears to be systematically larger for our halos compared with the value estimated for the Milky Way from main-sequence turnoff stars in the Sloan Digital Sky Survey. We show that this is likely to be due in part to contamination by faint QSOs and redder main-sequence stars, and might suggest that similar to 10% of the Milky Way halo stars have formed in situ.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available