AzTEC/ASTE 1.1-mm survey of the AKARI Deep Field South: source catalogue and number counts

被引：65

作者：

Hatsukade, B. ^{[1
]}

Kohno, K. ^{[2
,3
]}

Aretxaga, I. ^{[4
]}

Austermann, J. E. ^{[5
]}

Ezawa, H. ^{[6
]}

Hughes, D. H. ^{[4
]}

Ikarashi, S. ^{[2
]}

Iono, D. ^{[1
]}

Kawabe, R. ^{[1
]}

Khan, S. ^{[7
]}

Matsuo, H. ^{[6
]}

Matsuura, S. ^{[8
]}

Nakanishi, K. ^{[6
]}

Oshima, T. ^{[1
]}

Perera, T. ^{[9
]}

Scott, K. S. ^{[10
]}

Shirahata, M. ^{[8
]}

Takeuchi, T. T. ^{[11
]}

Tamura, Y. ^{[1
]}

Tanaka, K. ^{[12
]}

Tosaki, T. ^{[13
]}

Wilson, G. W. ^{[9
]}

Yun, M. S. ^{[9
]}

机构：

[1] Nobeyama Radio Observ, Minamisa Ku, Nagano 3841805, Japan

[2] Univ Tokyo, Inst Astron, Tokyo 1810015, Japan

[3] Univ Tokyo, Res Ctr Early Universe, Bunkyo Ku, Tokyo 1130033, Japan

[4] INAOE, Puebla 72000, Pue, Mexico

[5] Univ Colorado, Ctr Astrophys & Space Astron, Boulder, CO 80309 USA

[6] Natl Inst Nat Sci, Natl Astron Observ Japan, Mitaka, Tokyo 1818588, Japan

[7] Shanghai Normal Univ, Shanghai Key Lab Astrophys, Shanghai 200234, Peoples R China

[8] Japan Aerosp Explorat Agcy, Inst Space & Astronaut Sci, Sagamihara, Kanagawa 2298510, Japan

[9] Univ Massachusetts, Dept Astron, Amherst, MA 01003 USA

[10] Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 USA

[11] Nagoya Univ, Inst Adv Res, Chikusa Ku, Nagoya, Aichi 4648601, Japan

[12] Keio Univ, Fac Sci & Technol, Dept Phys, Kohoku Ku, Kanagawa 2238522, Japan

[13] Joetsu Univ Educ, Niigata 9438512, Japan

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2011年 / 411卷 / 01期

基金：

美国国家科学基金会;

关键词：

galaxies: evolution; galaxies: formation; galaxies: high-redshift; galaxies: starburst; DEGREE EXTRAGALACTIC SURVEY; STAR-FORMATION HISTORY; GOODS-N FIELD; 1200-MU-M MAMBO SURVEY; SCUBA SUPER-MAP; SUBMILLIMETER GALAXY; REDSHIFT SURVEY; LOCKMAN HOLE; LUMINOSITY DENSITY; MILLIMETER SURVEY;

D O I：

10.1111/j.1365-2966.2010.17658.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present results of a 1.1-mm deep survey of the AKARI Deep Field South (ADF-S) with AzTEC mounted on the Atacama Submillimetre Telescope Experiment (ASTE). We obtained a map of 0.25-deg(2) area with an rms noise level of 0.32-0.71 mJy. This is one of the deepest and widest maps thus far at millimetre and submillimetre wavelengths. We uncovered 198 sources with a significance of 3.5 sigma-15.6 sigma, providing the largest catalogue of 1.1-mm sources in a contiguous region. Most of the sources are not detected in the far-infrared bands of the AKARI satellite, suggesting that they are mostly at z >= 1.5 given the detection limits. We constructed differential and cumulative number counts in the ADF-S, the Subaru/XMM-Newton Deep Field and the SSA 22 field surveyed by AzTEC/ASTE, which provide currently the tightest constraints on the faint end. The integration of the best-fitting number counts in the ADF-S finds that the contribution of 1.1-mm sources with fluxes of >= 1 mJy to the cosmic infrared background (CIB) at 1.1 mm is 12-16 per cent, 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-fitting 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 at z similar to 2-3. The fraction of stellar mass of the present-day universe produced by 1.1-mm sources with >= 1 mJy at z >= 1 is similar to 20 per cent, calculated by the time integration of the star formation rate density. If we consider the recycled fraction of >0.4, which is the fraction of materials forming stars returned to the interstellar medium, the fraction of stellar mass produced by 1.1-mm sources decreases to less than or similar to 10 per cent.

引用

页码：102 / 116

页数：15

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