Intrinsic ellipticity correlation of luminous red galaxies and misalignment with their host dark matter halos. The 8 th Sino – German workshop Teppei O KUMURA (SHAO) Collaborators: Yipeng Jing (SHAO) & Cheng Li (MPA). References:.
Intrinsic ellipticity correlation of luminous red galaxies and misalignment with their host dark matter halos
The 8th Sino – German workshop
Teppei OKUMURA (SHAO)
Collaborators: Yipeng Jing (SHAO) & Cheng Li (MPA)
Okumura, Jing, & Li, ApJ, 694, in press (arXiv:0809.3790) Okumura & Jing, ApJL, accepted (arXiv:0812.2935)
Tidal field, …
= 0 : line = 1 : spherical
q = a / b
Halo occupation distribution for LRGs (Seo+2008, Zheng+)
Jing & Suto (2000)
4 times smaller
Calculation of model c11(r ;σθ) for LRGs
Δc11(r ;σθ) = c11model(r ;σθ) – c11obs(r)
σθ = 0 model
σθ = 35 model
Dependence of II correlation on halo mass (Jing 2002)
Hirata & Seljak (2004), Pengjie’s talk
Distant source (G)
Nearby source (I)
Directly related to the GI term of the shear power spectrum.
This relation is indeed valid on large scales.
Galaxy biasing ~2 for LRGs
between q and β, we expect