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Spatial correlation between submillimetre and Lyman-α galaxies in the SSA 22 protocluster

Author

Listed:
  • Yoichi Tamura

    (University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
    National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan)

  • Kotaro Kohno

    (Institute of Astronomy, University of Tokyo, 2-21-1 Osawa, Mitaka, Tokyo 181-0015, Japan)

  • Kouichiro Nakanishi

    (National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
    Nobeyama Radio Observatory, National Astronomical Observatory of Japan, Minamimaki, Minamisaku, Nagano 384-1305, Japan)

  • Bunyo Hatsukade

    (Institute of Astronomy, University of Tokyo, 2-21-1 Osawa, Mitaka, Tokyo 181-0015, Japan)

  • Daisuke Iono

    (Institute of Astronomy, University of Tokyo, 2-21-1 Osawa, Mitaka, Tokyo 181-0015, Japan
    Nobeyama Radio Observatory, National Astronomical Observatory of Japan, Minamimaki, Minamisaku, Nagano 384-1305, Japan)

  • Grant W. Wilson

    (University of Massachusetts, Amherst, Massachusetts 01003, USA)

  • Min S. Yun

    (University of Massachusetts, Amherst, Massachusetts 01003, USA)

  • Tadafumi Takata

    (National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan)

  • Yuichi Matsuda

    (National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan)

  • Tomoka Tosaki

    (Nobeyama Radio Observatory, National Astronomical Observatory of Japan, Minamimaki, Minamisaku, Nagano 384-1305, Japan)

  • Hajime Ezawa

    (Nobeyama Radio Observatory, National Astronomical Observatory of Japan, Minamimaki, Minamisaku, Nagano 384-1305, Japan)

  • Thushara A. Perera

    (University of Massachusetts, Amherst, Massachusetts 01003, USA)

  • Kimberly S. Scott

    (University of Massachusetts, Amherst, Massachusetts 01003, USA)

  • Jason E. Austermann

    (University of Massachusetts, Amherst, Massachusetts 01003, USA)

  • David H. Hughes

    (Instituto Nacional de Astrofísica, Optica y Electrónica, Aptdo. Postal 51 y 216, 72000 Puebla, Puebla, Mexico)

  • Itziar Aretxaga

    (Instituto Nacional de Astrofísica, Optica y Electrónica, Aptdo. Postal 51 y 216, 72000 Puebla, Puebla, Mexico)

  • Aeree Chung

    (University of Massachusetts, Amherst, Massachusetts 01003, USA)

  • Tai Oshima

    (Nobeyama Radio Observatory, National Astronomical Observatory of Japan, Minamimaki, Minamisaku, Nagano 384-1305, Japan)

  • Nobuyuki Yamaguchi

    (Nobeyama Radio Observatory, National Astronomical Observatory of Japan, Minamimaki, Minamisaku, Nagano 384-1305, Japan)

  • Kunihiko Tanaka

    (Nobeyama Radio Observatory, National Astronomical Observatory of Japan, Minamimaki, Minamisaku, Nagano 384-1305, Japan)

  • Ryohei Kawabe

    (Nobeyama Radio Observatory, National Astronomical Observatory of Japan, Minamimaki, Minamisaku, Nagano 384-1305, Japan)

Abstract

Star formation: Lyman-α emitters in the SSA 22 protocluster Many different populations of young star-forming galaxies in the early Universe are known, but the relationships between them and the cosmic large-scale structure are still not well understood. One group, the Lyman-α emitters, are thought to be young, low-mass galaxies with ages of around 108 years. An overdensity of them in one region of the sky is believed to mark a forming protocluster. Galaxies that are bright at submillimetre wavelengths are undergoing violent episodes of star formation, so the question of whether they are also associated with the protocluster naturally arises. Tamura et al. report an enhancement of submillimetre galaxies near the core of the SSA 22 protocluster, and a large-scale correlation between the submillimetre galaxies and the low-mass Lyman-α emitters, suggesting synchronous formation of the two very different types of star-forming galaxies within the same structure at high redshift.

Suggested Citation

  • Yoichi Tamura & Kotaro Kohno & Kouichiro Nakanishi & Bunyo Hatsukade & Daisuke Iono & Grant W. Wilson & Min S. Yun & Tadafumi Takata & Yuichi Matsuda & Tomoka Tosaki & Hajime Ezawa & Thushara A. Perer, 2009. "Spatial correlation between submillimetre and Lyman-α galaxies in the SSA 22 protocluster," Nature, Nature, vol. 459(7243), pages 61-63, May.
    • Handle: RePEc:nat:nature:v:459:y:2009:i:7243:d:10.1038_nature07947
    DOI: 10.1038/nature07947
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