HerMES: The SPIRE confusion limit

被引：260

作者：

Nguyen, H. T. ^{[1
]}

Schulz, B. ^{[2
]}

Levenson, L.

Amblard, A. ^{[3
]}

Arumugam, V. ^{[4
]}

Aussel, H. ^{[5
]}

Babbedge, T. ^{[6
]}

Blain, A.

Bock, J. ^{[1
]}

Boselli, A. ^{[7
]}

Buat, V. ^{[7
]}

Castro-Rodriguez, N. ^{[8
]}

Cava, A. ^{[8
]}

Chanial, P. ^{[6
]}

Chapin, E. ^{[9
]}

Clements, D. L. ^{[6
]}

Conley, A. ^{[10
]}

Conversi, L. ^{[11
]}

Cooray, A. ^{[3
]}

Dowell, C. D. ^{[1
]}

Dwek, E. ^{[12
]}

Eales, S. ^{[13
]}

Elbaz, D. ^{[5
]}

Fox, M. ^{[6
]}

Franceschini, A. ^{[14
]}

Gear, W. ^{[13
]}

Glenn, J. ^{[10
]}

Griffin, M. ^{[13
]}

Halpern, M. ^{[9
]}

Hatziminaoglou, E. ^{[15
]}

Ibar, E. ^{[16
]}

Isaak, K. ^{[13
]}

Ivison, R. J. ^{[4
,16
]}

Lagache, G. ^{[17
,18
]}

Lu, N. ^{[2
]}

Madden, S. ^{[5
]}

Maffei, B. ^{[19
]}

Mainetti, G. ^{[14
]}

Marchetti, L. ^{[14
]}

Marsden, G. ^{[9
]}

Marshall, J. ^{[1
]}

O'Halloran, B. ^{[6
]}

Oliver, S. J. ^{[20
]}

Omont, A. ^{[21
]}

Page, M. J. ^{[22
]}

Panuzzo, P. ^{[5
]}

Papageorgiou, A. ^{[13
]}

Pearson, C. P. ^{[23
,24
]}

Perez Fournon, I. ^{[8
]}

Pohlen, M. ^{[13
]}

机构：

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

[2] CALTECH, JPL, Infrared Proc & Anal Ctr, Pasadena, CA 91125 USA

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

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

[5] Univ Paris Diderot, CE Saclay, CNRS, Lab AIM Paris Saclay,CEA DSM Irfu, F-91191 Gif Sur Yvette, France

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

[7] Univ Aix Marseille, CNRS, OAMP, Lab Astrophys Marseille, F-13388 Marseille, France

[8] Inst Astrofis Canarias, E-38200 San Cristobal la Laguna, Spain

[9] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada

[10] Univ Colorado, Dept Astrophys & Planetary Sci, Boulder, CO 80309 USA

[11] European Space Astron Ctr, Herschel Sci Ctr, Madrid 28691, Spain

[12] NASA, Goddard Space Flight Ctr, Observat Cosmol, Greenbelt, MD 20771 USA

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

[14] Univ Padua, Dipartimento Astron, I-35122 Padua, Italy

[15] ESO, D-85748 Garching, Germany

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

[17] Univ Paris 11, IAS, F-91405 Orsay, France

[18] CNRS, UMR 8617, F-91405 Orsay, France

[19] Univ Manchester, Sch Phys & Astron, Manchester M13 9PL, Lancs, England

[20] Univ Sussex, Dept Phys & Astron, Ctr Astron, Brighton BN1 9QH, E Sussex, England

[21] Univ Paris 06, CNRS, UMR 7095, Inst Astrophys Paris, F-75014 Paris, France

[22] Univ Coll London, Mullard Space Sci Lab, Surrey RH5 6NT, England

[23] Rutherford Appleton Lab, Space Sci & Technol Dept, Didcot OX11 0QX, Oxon, England

[24] Univ Lethbridge, Inst Space Imaging Sci, Lethbridge, AB T1K 3M4, Canada

[25] Univ Oxford, Oxford OX1 3RH, England

[26] Univ Hertfordshire, Ctr Astrophys Res, Hatfield AL10 9AB, Herts, England

来源：

ASTRONOMY & ASTROPHYSICS | 2010年 / 518卷

关键词：

space vehicules: instruments; surveys; submillimeter: diffuse background; submillimiter: galaxies;

D O I：

10.1051/0004-6361/201014680

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report on the sensitivity of SPIRE photometers on the Herschel Space Observatory. Specifically, we measure the confusion noise from observations taken during the science demonstration phase of the Herschel Multi-tiered Extragalactic Survey. Confusion noise is defined to be the spatial variation of the sky intensity in the limit of infinite integration time, and is found to be consistent among the different fields in our survey at the level of 5.8, 6.3 and 6.8 mJy/beam at 250, 350 and 500 mu m, respectively. These results, together with the measured instrument noise, may be used to estimate the integration time required for confusion limited maps, and provide a noise estimate for maps obtained by SPIRE.

引用

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