Study of galaxy formation history and precise cosmology by SDSS massive spectroscopic survey

• Project/Area Number: 22340050
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: The University of Tokyo
• Principal Investigator: YASUDA Naoki 東京大学, カブリ数物連携宇宙研究機構, 教授 (80333277)
• Co-Investigator(Renkei-kenkyūsha): AIHARA Hiroaki 東京大学, 理学系研究科, 教授 (60167773) ; TAKADA Masahiro 東京大学, カブリ数物連携宇宙研究機構, 教授 (40374889) ; YOSHIDA Naoki 東京大学, 理学系研究科, 教授 (90377961) ; SHIMASAKU Kazuhiro 東京大学, 理学系研究科, 准教授 (00251405) ; DOI Mamoru 東京大学, 理学系研究科, 教授 (00242090)
• Project Period (FY): 2010-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥18,460,000 (Direct Cost: ¥14,200,000、Indirect Cost: ¥4,260,000); Fiscal Year 2014: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000); Fiscal Year 2013: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000); Fiscal Year 2012: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000); Fiscal Year 2011: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000); Fiscal Year 2010: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
• Keywords: 宇宙物理 / 光学赤外線天文学 / 天文

Outline of Final Research Achievements

The origin of the universe and how the universe has evolved are imprinted in the distribution of the galaxies. We have joined Sloan Digital Sky Survey III and taken spectrum of 1.5 million galaxies up to redshift of 0.7 distributed over 10,000 square degrees on the sky. The measurement of Baryon Acoustic Oscillation (sound wave scale at cosmic recombination) scale based on this dataset determined the distance to redshift 0.57 (~6 billion light-years) with 1% accuracy. This measurement confirms the universe is a flat universe with cosmological constant. The simultaneous analysis of the weak lensing signal together with galaxy clustering information give us the galaxy and dark matter halo relation and the cosmological parameters without degeneracy.

Research Products

• [Journal Article] The Type Ia supernovae rate with Subaru/XMM-Newton Deep Survey (2014)
  • Author(s): Jun E. Okumura
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 66-2 Issue: 2
  • DOI: 10.1093/pasj/psu024
  • Peer Reviewed
• [Journal Article] Discovery of Four Doubly Imaged Quasar Lenses from the Sloan Digital Sky Survey (2014)
  • Author(s): Inada et al.
  • Journal Title: Astronomical Journal Volume: 147 Issue: 6 Pages: 153-158
  • DOI: 10.1088/0004-6256/147/6/153
  • Peer Reviewed
• [Journal Article] Lyα Forest Tomography from Background Galaxies: The First Megaparsec-resolution Large-scale Structure Map at z > 2 (2014)
  • Author(s): Lee et al.
  • Journal Title: Astrophysical Journal Volume: 795 Pages: 12-18
  • Peer Reviewed
• [Journal Article] The Weak Lensing Signal and the Clustering of BOSS Galaxies II: Astrophysical and Cosmological Constraints (2014)
  • Author(s): More et al.
  • Journal Title: eprint arXiv:1407.1856 Volume: 1407
  • Open Access
• [Journal Article] Statistical Properties of Multi-epoch Spectral Variability of SDSS Stripe 82 Quasars (2014)
  • Author(s): Kokubo et al.
  • Journal Title: The Astrophysical Journal Volume: 783 Issue: 1 Pages: 46-65
  • DOI: 10.1088/0004-637x/783/1/46
  • Peer Reviewed
• [Journal Article] Baryon acoustic oscillations with the cross-correlation of spectroscopic and photometric samples (2013)
  • Author(s): Nishizawa et al.
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 433 Issue: 1 Pages: 730-739
  • DOI: 10.1093/mnras/stt761
  • Peer Reviewed
• [Journal Article] Subaru weak-lensing measurement of a z~0.8 cluster discovered by the Atacama Cosmology Telescope Survey (2013)
  • Author(s): H. Miyatake, H. Aihara et al.
  • Journal Title: MNRAS Volume: 429 Issue: 4 Pages: 3627-3644
  • DOI: 10.1093/mnras/sts643
  • Peer Reviewed
• [Journal Article] SYNMAG Photometry: A Fast Tool for Catalog-level Matched Colors of Extended Sources (2012)
  • Author(s): Bundy, K. et al.
  • Journal Title: The Astronomical Journal Volume: 144 Issue: 6 Pages: 188-188
  • DOI: 10.1088/0004-6256/144/6/188
  • Peer Reviewed
• [Journal Article] A Method of Identifying AGNs Based on Emission-Line Excess and the Nature of Low-Luminosity AGNs in the Sloan Digital Sky Survey. I. A New Method (2012)
  • Author(s): Tanaka, M.
  • Journal Title: Publications of Astronomical Society of Japan Volume: 64 Pages: 36-36
  • Peer Reviewed
• [Journal Article] A method of identifying AGNs based on emission-line excess and... (2012)
  • Author(s): Tanaka, M.
  • Journal Title: Publications of Astronomical Society of Japan Volume: 64 Pages: 36-36
  • Peer Reviewed
• [Journal Article] SDSS-III: Massive Spectroscopic Surveys of the Distant Universe (2011)
  • Author(s): Eisenstein, D. J. et al.
  • Journal Title: The Astronomical Journal Volume: 142 Issue: 3 Pages: 72-72
  • DOI: 10.1088/0004-6256/142/3/72
  • Peer Reviewed
• [Journal Article] SDSS-III : Massive Spectroscopic Surveys of the Distant Universe,... (2011)
  • Author(s): Eisenstein, D.J., et al
  • Journal Title: The Astronomical Journal Volume: 142 Pages: 72-72
  • Peer Reviewed