AzTEC/ASTE 1.1 mm Deep surveys: Number counts and clustering of millimeter-bright galaxies

B. Hatsukade, K. Kohno, I. Aretxaga, J. E. Austermann, H. Ezawa, D. H. Hughes, S. Ikarashi, D. Iono, R. Kawabe, H. Matsuo, S. Matsuura, K. Nakanishi, T. Oshima, T. Perera, K. S. Scott, M. Shirahata, T. T. Takeuchi, Y. Tamura, K. Tanaka, T. TosakiG. W. Wilson, M. S. Yun

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

We present number counts and clustering properties of millimeter-bright galaxies uncovered by the AzTEC camera mounted on the Atacama Submillimeter Telescope Experiment (ASTE). We surveyed the AKARI Deep Field South (ADF-S), the Subaru/XMM Newton Deep Field (SXDF), and the SSA22 fields with an area of ∼ 0.25 deg2 each with an rms noise level of ∼0.4-1.0 mJy We constructed differential and cumulative number counts, which provide currently the tightest constraints on the faint end. The integration of the best-fit number counts in the ADF-S find that the contribution of 1.1 mm sources with fluxes ≥1 mJy to the cosmic infrared background (CIB) at 1.1 mm is 12-16%, suggesting that the large fraction of the CIB originates from faint sources of which the number counts are not yet constrained. We estimate the cosmic star-formation rate density contributed by 1.1 mm sources with ≥1 mJy using the best-fit number counts in the ADF-S and find that it is lower by about a factor of 5-10 compared to those derived from UV/optically-selected galaxies atz ∼ 2-3. The average mass of dark halos hosting bright 1.1 mm sources was calculated to be 1013-1014Mȯ. Comparison of correlation lengths of 1.1 mm sources with other populations and with a bias evolution model suggests that dark halos hosting bright 1.1 mm sources evolve into systems of clusters at present universe and the 1.1 mm sources residing the dark halos evolve into massive elliptical galaxies located in the center of clusters.

本文言語English
ホスト出版物のタイトルDeciphering the Ancient Universe with Gamma-Ray Bursts
ページ324-326
ページ数3
DOI
出版ステータスPublished - 2010 12月 13
外部発表はい
イベントInternational Symposium "Deciphering the Ancient Universe with Gamma-Ray Bursts" - Kyoto, Japan
継続期間: 2010 4月 192010 4月 23

出版物シリーズ

名前AIP Conference Proceedings
1279
ISSN(印刷版)0094-243X
ISSN(電子版)1551-7616

Other

OtherInternational Symposium "Deciphering the Ancient Universe with Gamma-Ray Bursts"
国/地域Japan
CityKyoto
Period10/4/1910/4/23

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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