THE INFRARED PROPERTIES OF SOURCES MATCHED IN THE WISE ALL-SKY AND HERSCHEL ATLAS SURVEYS

被引：10

作者：

Bond, Nicholas A. ^{[1
]}

Benford, Dominic J. ^{[1
]}

Gardner, Jonathan P. ^{[1
]}

Amblard, Alexandre ^{[2
]}

Fleuren, Simone ^{[3
]}

Blain, Andrew W. ^{[4
]}

Dunne, Loretta ^{[5
]}

Smith, Daniel J. B. ^{[6
]}

Maddox, Steve J. ^{[5
]}

Hoyos, Carlos ^{[5
]}

Baes, Maarten ^{[7
]}

Bonfield, David ^{[6
]}

Bourne, Nathan ^{[5
]}

Bridge, Carrie ^{[8
]}

Buttiglione, Sara ^{[9
]}

Cava, Antonio ^{[10
]}

Clements, David ^{[11
]}

Cooray, Asantha ^{[12
]}

Dariush, Ali ^{[13
]}

de Zotti, Gianfranco ^{[9
,14
]}

Driver, Simon ^{[15
,16
]}

Dye, Simon ^{[5
]}

Eales, Steve ^{[17
]}

Eisenhardt, Peter ^{[18
]}

Hopwood, Rosalind ^{[13
]}

Ibar, Edo ^{[19
]}

Ivison, Rob J. ^{[19
]}

Jarvis, Matt J. ^{[6
,20
]}

Kelvin, Lee ^{[15
,16
]}

Robotham, Aaron S. G. ^{[15
,16
]}

Temi, Pasquale ^{[2
]}

Thompson, Mark ^{[6
]}

Tsai, Chao-Wei ^{[21
]}

van der Werf, Paul ^{[22
]}

Wright, Edward L. ^{[23
]}

Wu, Jingwen ^{[16
]}

Yan, Lin ^{[24
]}

机构：

[1] NASA, Goddard Space Flight Ctr, Cosmol Lab Code 665, Greenbelt, MD 20771 USA

[2] NASA, Ames Res Ctr, Astrophys Branch, Moffett Field, CA 94035 USA

[3] Univ London, Sch Math Sci, London E1 4NS, England

[4] Univ Leicester, Dept Phys & Astron, Leicester LE1 7RH, Leics, England

[5] Univ Nottingham, Sch Phys & Astron, Nottingham NG7 2RD, England

[6] Univ Hertfordshire, Ctr Astrophys Res, Sci & Technol Res Inst, Hatfield AL10 9AB, Herts, England

[7] Univ Ghent, Sterrenkundig Observ, B-9000 Ghent, Belgium

[8] CALTECH, Div Phys Math & Astron, Pasadena, CA 91125 USA

[9] Osserv Astron Padova, INAF, I-35122 Padua, Italy

[10] Univ Complutense Madrid, Dept Astrofis, Fac CC Fis, E-28040 Madrid, Spain

[11] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, Astrophys Grp, London SW7 2AZ, England

[12] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA

[13] Univ London Imperial Coll Sci Technol & Med, Dept Phys, London SW7 2AZ, England

[14] SISSA, I-34136 Trieste, Italy

[15] Univ Western Australia, Int Ctr Radio Astron Res ICRAR, Crawley, WA 6009, Australia

[16] Univ St Andrews, Sch Phys & Astron, SUPA, St Andrews KY16 9SS, Fife, Scotland

[17] Cardiff Univ, Sch Phys & Astron, Cardiff CF24 3AA, S Glam, Wales

[18] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA

[19] Royal Observ, UK Astron Technol Ctr, Edinburgh EH9 3HJ, Midlothian, Scotland

[20] Univ Western Cape, Dept Phys, ZA-7535 Bellville, South Africa

[21] CALTECH, IPAC, Pasadena, CA 91125 USA

[22] Leiden Univ, Leiden Observ, NL-2300 RA Leiden, Netherlands

[23] UCLA Astron, Los Angeles, CA 90095 USA

[24] CALTECH, Spitzer Sci Ctr, Pasadena, CA 91125 USA

来源：

ASTROPHYSICAL JOURNAL LETTERS | 2012年 / 750卷 / 01期

基金：

美国国家航空航天局; 美国国家科学基金会;

关键词：

cosmology: observations; galaxies: general; galaxies: high-redshift; galaxies: statistics; infrared: galaxies; surveys; ACTIVE GALACTIC NUCLEI; STAR-FORMING GALAXIES; REDSHIFT SURVEY; DATA RELEASE; SUBMILLIMETER; PERFORMANCE; POPULATION; TELESCOPE; EVOLUTION; SELECTION;

D O I：

10.1088/2041-8205/750/1/L18

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We describe the infrared properties of sources detected over similar to 36 deg(2) of sky in the GAMA 15 hr equatorial field, using data from both the Herschel Astrophysical Terahertz Large-Area Survey (H-ATLAS) and Wide-field Infrared Survey (WISE). With 5 sigma point-source depths of 34 and 0.048 mJy at 250 mu m and 3.4 mu m, respectively, we are able to identify 50.6% of the H-ATLAS sources in the WISE survey, corresponding to a surface density of similar to 630 deg(-2). Approximately two-thirds of these sources have measured spectroscopic or optical/near-IR photometric redshifts of z < 1. For sources with spectroscopic redshifts at z < 0.3, we find a linear correlation between the infrared luminosity at 3.4 mu m and that at 250 mu m, with +/- 50% scatter over similar to 1.5 orders of magnitude in luminosity, similar to 10(9)-10(10.5) L-circle dot. By contrast, the matched sources without previously measured redshifts (r greater than or similar to 20.5) have 250-350 mu m flux density ratios which suggest either high-redshift galaxies (z greater than or similar to 1.5) or optically faint low-redshift galaxies with unusually low temperatures (T less than or similar to 20). Their small 3.4-250 mu m flux ratios favor a high-redshift galaxy population, as only the most actively star-forming galaxies at low redshift (e.g., Lambda rp 220) exhibit comparable flux density ratios. Furthermore, we find a relatively large active galactic nucleus fraction (similar to 30%) in a 12 mu m flux-limited subsample of H-ATLAS sources, also consistent with there being a significant population of high-redshift sources in the no-redshift sample.

引用

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