Perspectives from the Subaru Wide-Field Deep Survey

35 Pages·2005·7.46 MB·English

Perspectives from the Subaru Wide-Field Deep Survey
--
Suprime-Cam+FOCAS to HySuprime+WFMOS --
Cosmic Web Made of 515 Galaxies at z=5.7
Ouchi et al. 2005
ApJ, 620, L1
Masami Ouchi (STScI)
for the SXDS Collaboration
Overview
Suprime-Cam
• 1. Highlight clustering results of
our on-going wide-field deep
survey with Suprime-Cam +
FOCAS
– Angular correlation of LBGs at z=3-6
– Large-scale structures/clusters of
LAEs at z=5.7
• 2. Future Prospects for the survey
with HyperSuprime + WFMOS
8m-SUBARU
Subaru/XMM Deep Survey (SXDS) Field
• A multi-wavelength data
SXDS(1.3 deg2)
– X-ray:XMM (Watson et al.)
– UV: GALEX
[2h18m00s ,-5o00’00”]
– Optical: Subaru (Sekiguchi et al.)
– NIR: UKIRT (UKDISS[K=25]Almaini et al.)
– IR: Spitzer/IRAC (Swire: Lonsdale et al.)
Sub-mm:SCUBA (SHADES;Dunlop et al.)
– Sub-mm:BLAST (Hughs et al.)
– Radio:VLA (Rawlings et al.)
(GMRT; Rawlings et al.)
~150 Mpc at z=3-6
• The optical data set
– BVRiz with Subaru/Suprime-Cam
(Furusawa et al. in prep)~5hr/band/pointing
Very Deep + wide-field data
B V R i’ z’
28.2 27.2 27.6 27.5 26.5
– NB530, NB570=25.0, NB816=26.0,
– NB921~25.5 (50% done)
– Subaru/FOCAS (Akiyama et al. in Prep.)
– VLT/VIMOS (Simpson/ Saito et al. in prep)
Comparison of Surveyed Areas:
Very Deep Multi-band Surveys (i’~27)
COSMOS →complimentary data
SXDS(1.3 deg2)
(2deg2; but ~1/4 exp. time in BVRz)
GOODS (0.09 deg2) FDF(0.01deg2)
HUDF(0.002deg2) HDF(0.001deg2)
• Appropriate data for clustering of high-z galaxies
High-z Galaxy Samples
• Lyman Break Galaxy (LBG or dropouts)
– z~4: 16,920 (i’<27.5; BRi 2 colors)
– z~5: 2,768 (z’<26.5; Viz 2 colors + no flux in B)
– z~5: 1,293 (z’<26.5; Riz 2 colors + no flux in B,V)
– z~6: 133 (z’<26.0; i-z>2 + no flux in B,V,R)
• Lyα Emitter (LAE)
– z=3.1: 356 (NB503<25.3; BVNB 2 colors)
– z=3.7: 101 (NB570<24.7; BVNB 2 colors)
– z=5.7: 515 (NB816<26.0; RiNB 2 colors+ no flux in BV)
– z=6.6: --- 50% of data obtained this fall --- (Goal: 5xSDF)
• Thanks to the deep & wide field imaging data, we have
obtained ~20,000 LBGs and ~1,000 LAEs at z=3.5-6.2 (6.6)
(~x10 times in number on 1 deg2 sky )
Results of Spectroscopic Follow-up
• Part of galaxies in
these samples are
spectroscopically
confirmed.
e.g.
– 19/515 for z=5.7 LAEs
spectroscopic obs. continue
Part of results (for z=5.7 Lyα emitters)
Ouchi et al. 2005, ApJ, 620, L1
Sky Distribution
z~4 BRi-LBGs
(z=3.5-4.5)
N=16,920
Red=bright
Blue=intermediate
Black=faint
Gray=masked regions
Sky Distribution
z~5 Viz-LBGs
(z=4.2-5.2)
N=2,768
Red=bright
Blue=intermediate
Black=faint
Gray=masked regions
Sky Distribution
z~5 Riz-LBGs
(z=4.6-5.2)
N=1,293
Red=bright
Blue=intermediate
Black=faint
Gray=masked regions
Sky Distribution
z~6 i-dropouts
(z=5.6-6.2)
N= 133
Red=bright
Blue=intermediate
Gray=masked regions