Herschel -ATLAS/GAMA: a census of dust in optically selected galaxies from stacking at submillimetre wavelengths

被引：79

作者：

Bourne, N. ^{[1
]}

Maddox, S. J. ^{[1
]}

Dunne, L. ^{[1
]}

Auld, R. ^{[2
]}

Baes, M. ^{[3
]}

Baldry, I. K. ^{[4
]}

Bonfield, D. G. ^{[5
]}

Cooray, A. ^{[6
]}

Croom, S. M. ^{[7
]}

Dariush, A. ^{[8
]}

de Zotti, G. ^{[9
,10
]}

Driver, S. P. ^{[11
,12
]}

Dye, S. ^{[1
]}

Eales, S. ^{[2
]}

Gomez, H. L. ^{[2
]}

Gonzalez-Nuevo, J. ^{[10
]}

Hopkins, A. M. ^{[13
]}

Ibar, E. ^{[14
]}

Jarvis, M. J. ^{[5
,15
]}

Lapi, A. ^{[10
,16
]}

Madore, B. ^{[17
]}

Michalowski, M. J. ^{[18
]}

Pohlen, M. ^{[2
]}

Popescu, C. C. ^{[19
]}

Rigby, E. E. ^{[18
]}

Seibert, M. ^{[17
]}

Smith, D. J. B. ^{[1
,5
]}

Tuffs, R. J. ^{[20
]}

van der Werf, P. ^{[21
]}

Brough, S. ^{[13
]}

Buttiglione, S. ^{[9
]}

Cava, A. ^{[22
]}

Clements, D. L.

Conselice, C. J. ^{[1
]}

Fritz, J.

Hopwood, R.

Ivison, R. J.

Jones, D. H. ^{[23
]}

Kelvin, L. S. ^{[11
]}

Liske, J. ^{[24
]}

Loveday, J. ^{[25
]}

Norberg, P.

Robotham, A. S. G. ^{[11
]}

Rodighiero, G. ^{[26
]}

Temi, P. ^{[27
]}

机构：

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

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

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

[4] Liverpool John Moores Univ, Astrophys Res Inst, Birkenhead CH41 1LD, Merseyside, England

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

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

[7] Univ Sydney, Sch Phys, Sydney Inst Astron, Sydney, NSW 2006, Australia

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

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

[10] SISSA, Astrophys Sect, I-34136 Trieste, Italy

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

[12] Univ Western Australia, Int Ctr Radio Astron Res ICRAR, Nedlands, WA 6009, Australia

[13] Australian Astron Observ, Epping, NSW 1710, Australia

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

[15] Univ Western Cape, Phys Dept, ZA-7535 Cape Town, South Africa

[16] Univ Roma Tor Vergata, Dipartimento Fis, I-00133 Rome, Italy

[17] Carnegie Inst Sci, Pasadena, CA 91101 USA

[18] Univ Edinburgh, Royal Observ, Inst Astron, Edinburgh EH9 3HJ, Midlothian, Scotland

[19] Univ Cent Lancashire, Jeremiah Horrocks Inst, Preston PR1 2HE, Lancs, England

[20] Max Planck Inst Nucl Phys MPIK, D-69117 Heidelberg, Germany

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

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

[23] Monash Univ, Sch Phys, Clayton, Vic 3800, Australia

[24] European So Observ, D-85748 Garching, Germany

[25] Univ Sussex, Astron Ctr, Brighton BN1 9QH, E Sussex, England

[26] Univ Padua, I-35122 Padua, Italy

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

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2012年 / 421卷 / 04期

关键词：

galaxies: evolution; galaxies: ISM; galaxies: statistics; submillimetre: diffuse background; submillimetre: galaxies; STAR-FORMATION HISTORY; SPECTRAL ENERGY-DISTRIBUTIONS; INFRARED LUMINOSITY FUNCTIONS; COLOR-MAGNITUDE DIAGRAM; DEEP-FIELD-SOUTH; EXTRAGALACTIC SURVEY SHADES; 250; MU-M; SKY SURVEY; SCUBA OBSERVATIONS; FORMING GALAXIES;

D O I：

10.1111/j.1365-2966.2012.20528.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We use the Herschel-ATLAS survey to conduct the first large-scale statistical study of the submillimetre properties of optically selected galaxies. Using similar to 80 000 r-band selected galaxies from 126 deg2 of the GAMA survey, we stack into submillimetre imaging at 250, 350 and 500 mu m to gain unprecedented statistics on the dust emission from galaxies at z < 0.35. We find that low-redshift galaxies account for 5 per cent of the cosmic 250-mu m background (4 per cent at 350 mu m; 3 per cent at 500 mu m), of which approximately 60 per cent comes from blue and 20 per cent from red galaxies (rest-frame g-r). We compare the dust properties of different galaxy populations by dividing the sample into bins of optical luminosity, stellar mass, colour and redshift. In blue galaxies we find that dust temperature and luminosity correlate strongly with stellar mass at a fixed redshift, but red galaxies do not follow these correlations and overall have lower luminosities and temperatures. We make reasonable assumptions to account for the contaminating flux from lensing by red-sequence galaxies and conclude that galaxies with different optical colours have fundamentally different dust emission properties. Results indicate that while blue galaxies are more luminous than red galaxies due to higher temperatures, the dust masses of the two samples are relatively similar. Dust mass is shown to correlate with stellar mass, although the dust-to-stellar mass ratio is much higher for low stellar mass galaxies, consistent with the lowest mass galaxies having the highest specific star formation rates. We stack the 250 mu m-to-NUV luminosity ratio, finding results consistent with greater obscuration of star formation at lower stellar mass and higher redshift. Submillimetre luminosities and dust masses of all galaxies are shown to evolve strongly with redshift, indicating a fall in the amount of obscured star formation in ordinary galaxies over the last four billion years.

引用

页码：3027 / 3059

页数：33

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