The Subaru Seminar is
usually held in Room 104 of the Hilo Base Facility, adjacent
to the main lobby. Everyone is welcome to attend. If you are
interested in giving a seminar, please contact Subaru
seminar organizers (Tomonori Usuda, Kumiko S. Usuda, Masahiko Hayashi, Masayuki Akiyama)
March 4, Friday at 11:00am
" Mapping the Universe with Galaxies at z=3-6 in the Subaru/XMM-Newton Deep Field;
Masami Ouchi (Space Telescope Science Institute)
I will present clustering properties of galaxies at z=3-6 in the 1 deg^2 sky of the Subaru/XMM-Newton Deep Field (SXDF).
We have obtained about 20,000 Lyman Break Galaxies (LBGs) at z=3.5-6.2 and 1,000 Lyman alpha Emitters (LAEs) at z~3.1,3.7, and 5.7.
Taking advantage of the largest and widest high-z galaxy samples ever obtained, we have investigated the distribution of high-z galaxies.
The angular correlation functions of LBGs show a significant excess of clustering in a small angular scale, which is the evidence for the multiple occupation of LBGs in a single dark halo with a mass of ~10^12 Mo.
The distribution of LAEs show filamentary large-scale structures with 10-40 Mpc scale voids.
We have identified a very dense region of LAEs (4.8 sigma level) at z=5.7 in the southern area of the SXDF.
Our spectroscopic follow-up observations revealed two concentrations made of 6 LAEs at z=5.69 and 4 LAEs at z=5.67, respectively, distributed in a 1-Mpc sphere.
These concentrations have about 130 times higher star-formation rate density than the field. These concentrations may be proto-clusters just beginning to form.
I will discuss the formation of clusters and large-scale structures based on these results.
Seminars are also held at JAC,