HerMES: Deep galaxy number counts from a P(D) fluctuation analysis of SPIRE Science Demonstration Phase observations

Dusty, star-forming galaxies contribute to a bright, currently unresolved cosmic far-infrared background. Deep Herschel-Spectral and Photometric Imaging Receiver (SPIRE) images designed to detect and characterize the galaxies that comprise this background are highly confused, such that the bulk lies...

Full description

Bibliographic Details
Main Authors:	Glenn, J., Conley, A., Béthermin, M., Altieri, B., Amblard, A., Arumugam, V., Aussel, H., Babbedge, T., Blain, A., Bock, J., Boselli, A., Buat, V., Castro-Rodríguez, N., Cava, A., Chanial, P., Clements, D., Conversi, L., Cooray, A., Dowell, C., Dwek, E., Eales, S., Elbaz, D., Ellsworth-Bowers, T., Fox, M., Franceschini, A., Gear, W., Griffin, M., Halpern, M., Hatziminaoglou, E., Ibar, E., Isaak, K., Ivison, R., Lagache, G., Laurent, G., Levenson, L., Lu, N., Madden, S., Maffei, B., Mainetti, G., Marchetti, L., Marsden, G., Nguyen, H., O'Halloran, B., Oliver, S., Omont, A., Page, M., Panuzzo, P., Papageorgiou, A., Pearson, C., Pérez-Fournon, I., Pohlen, M., Rigopoulou, D., Rizzo, D., Roseboom, I., Rowan-Robinson, M., Portal, M., Schulz, B., Scott, D., Seymour, Nick, Shupe, D., Smith, A., Stevens, J., Symeonidis, M., Trichas, M., Tugwell, K., Vaccari, M., Valtchanov, I., Vieira, J., Vigroux, L., Wang, L., Ward, R., Wright, G., Xu, C., Zemcov, M.
Format:	Journal Article
Published:	Oxford University Press 2010
Online Access:	http://hdl.handle.net/20.500.11937/17098

_version_	1848749366607609856
author	Glenn, J. Conley, A. Béthermin, M. Altieri, B. Amblard, A. Arumugam, V. Aussel, H. Babbedge, T. Blain, A. Bock, J. Boselli, A. Buat, V. Castro-Rodríguez, N. Cava, A. Chanial, P. Clements, D. Conversi, L. Cooray, A. Dowell, C. Dwek, E. Eales, S. Elbaz, D. Ellsworth-Bowers, T. Fox, M. Franceschini, A. Gear, W. Griffin, M. Halpern, M. Hatziminaoglou, E. Ibar, E. Isaak, K. Ivison, R. Lagache, G. Laurent, G. Levenson, L. Lu, N. Madden, S. Maffei, B. Mainetti, G. Marchetti, L. Marsden, G. Nguyen, H. O'Halloran, B. Oliver, S. Omont, A. Page, M. Panuzzo, P. Papageorgiou, A. Pearson, C. Pérez-Fournon, I. Pohlen, M. Rigopoulou, D. Rizzo, D. Roseboom, I. Rowan-Robinson, M. Portal, M. Schulz, B. Scott, D. Seymour, Nick Shupe, D. Smith, A. Stevens, J. Symeonidis, M. Trichas, M. Tugwell, K. Vaccari, M. Valtchanov, I. Vieira, J. Vigroux, L. Wang, L. Ward, R. Wright, G. Xu, C. Zemcov, M.
author_facet	Glenn, J. Conley, A. Béthermin, M. Altieri, B. Amblard, A. Arumugam, V. Aussel, H. Babbedge, T. Blain, A. Bock, J. Boselli, A. Buat, V. Castro-Rodríguez, N. Cava, A. Chanial, P. Clements, D. Conversi, L. Cooray, A. Dowell, C. Dwek, E. Eales, S. Elbaz, D. Ellsworth-Bowers, T. Fox, M. Franceschini, A. Gear, W. Griffin, M. Halpern, M. Hatziminaoglou, E. Ibar, E. Isaak, K. Ivison, R. Lagache, G. Laurent, G. Levenson, L. Lu, N. Madden, S. Maffei, B. Mainetti, G. Marchetti, L. Marsden, G. Nguyen, H. O'Halloran, B. Oliver, S. Omont, A. Page, M. Panuzzo, P. Papageorgiou, A. Pearson, C. Pérez-Fournon, I. Pohlen, M. Rigopoulou, D. Rizzo, D. Roseboom, I. Rowan-Robinson, M. Portal, M. Schulz, B. Scott, D. Seymour, Nick Shupe, D. Smith, A. Stevens, J. Symeonidis, M. Trichas, M. Tugwell, K. Vaccari, M. Valtchanov, I. Vieira, J. Vigroux, L. Wang, L. Ward, R. Wright, G. Xu, C. Zemcov, M.
author_sort	Glenn, J.
building	Curtin Institutional Repository
collection	Online Access
description	Dusty, star-forming galaxies contribute to a bright, currently unresolved cosmic far-infrared background. Deep Herschel-Spectral and Photometric Imaging Receiver (SPIRE) images designed to detect and characterize the galaxies that comprise this background are highly confused, such that the bulk lies below the classical confusion limit. We analyse three fields from the Herschel Multi-tiered Extragalactic Survey (HerMES) programme in all three SPIRE bands (250, 350 and 500 µm); parametrized galaxy number count models are derived to a depth of ~2 mJy beam-1, approximately four times the depth of previous analyses at these wavelengths, using a probability of deflection [P(D)] approach for comparison to theoretical number count models. Our fits account for 64, 60 and 43 per cent of the far-infrared background in the three bands. The number counts are consistent with those based on individually detected SPIRE sources, but generally inconsistent with most galaxy number count models, which generically overpredict the number of bright galaxies and are not as steep as the P(D)-derived number counts. Clear evidence is found for a break in the slope of the differential number counts at low flux densities. Systematic effects in the P(D) analysis are explored. We find that the effects of clustering have a small impact on the data, and the largest identified systematic error arises from uncertainties in the SPIRE beam. © 2010 The Authors. Journal compilation © 2010 RAS.
first_indexed	2025-11-14T07:19:48Z
format	Journal Article
id	curtin-20.500.11937-17098
institution	Curtin University Malaysia
institution_category	Local University
last_indexed	2025-11-14T07:19:48Z
publishDate	2010
publisher	Oxford University Press
recordtype	eprints
repository_type	Digital Repository
spelling	curtin-20.500.11937-170982017-09-13T15:42:03Z HerMES: Deep galaxy number counts from a P(D) fluctuation analysis of SPIRE Science Demonstration Phase observations Glenn, J. Conley, A. Béthermin, M. Altieri, B. Amblard, A. Arumugam, V. Aussel, H. Babbedge, T. Blain, A. Bock, J. Boselli, A. Buat, V. Castro-Rodríguez, N. Cava, A. Chanial, P. Clements, D. Conversi, L. Cooray, A. Dowell, C. Dwek, E. Eales, S. Elbaz, D. Ellsworth-Bowers, T. Fox, M. Franceschini, A. Gear, W. Griffin, M. Halpern, M. Hatziminaoglou, E. Ibar, E. Isaak, K. Ivison, R. Lagache, G. Laurent, G. Levenson, L. Lu, N. Madden, S. Maffei, B. Mainetti, G. Marchetti, L. Marsden, G. Nguyen, H. O'Halloran, B. Oliver, S. Omont, A. Page, M. Panuzzo, P. Papageorgiou, A. Pearson, C. Pérez-Fournon, I. Pohlen, M. Rigopoulou, D. Rizzo, D. Roseboom, I. Rowan-Robinson, M. Portal, M. Schulz, B. Scott, D. Seymour, Nick Shupe, D. Smith, A. Stevens, J. Symeonidis, M. Trichas, M. Tugwell, K. Vaccari, M. Valtchanov, I. Vieira, J. Vigroux, L. Wang, L. Ward, R. Wright, G. Xu, C. Zemcov, M. Dusty, star-forming galaxies contribute to a bright, currently unresolved cosmic far-infrared background. Deep Herschel-Spectral and Photometric Imaging Receiver (SPIRE) images designed to detect and characterize the galaxies that comprise this background are highly confused, such that the bulk lies below the classical confusion limit. We analyse three fields from the Herschel Multi-tiered Extragalactic Survey (HerMES) programme in all three SPIRE bands (250, 350 and 500 µm); parametrized galaxy number count models are derived to a depth of ~2 mJy beam-1, approximately four times the depth of previous analyses at these wavelengths, using a probability of deflection [P(D)] approach for comparison to theoretical number count models. Our fits account for 64, 60 and 43 per cent of the far-infrared background in the three bands. The number counts are consistent with those based on individually detected SPIRE sources, but generally inconsistent with most galaxy number count models, which generically overpredict the number of bright galaxies and are not as steep as the P(D)-derived number counts. Clear evidence is found for a break in the slope of the differential number counts at low flux densities. Systematic effects in the P(D) analysis are explored. We find that the effects of clustering have a small impact on the data, and the largest identified systematic error arises from uncertainties in the SPIRE beam. © 2010 The Authors. Journal compilation © 2010 RAS. 2010 Journal Article http://hdl.handle.net/20.500.11937/17098 10.1111/j.1365-2966.2010.17781.x Oxford University Press unknown
spellingShingle	Glenn, J. Conley, A. Béthermin, M. Altieri, B. Amblard, A. Arumugam, V. Aussel, H. Babbedge, T. Blain, A. Bock, J. Boselli, A. Buat, V. Castro-Rodríguez, N. Cava, A. Chanial, P. Clements, D. Conversi, L. Cooray, A. Dowell, C. Dwek, E. Eales, S. Elbaz, D. Ellsworth-Bowers, T. Fox, M. Franceschini, A. Gear, W. Griffin, M. Halpern, M. Hatziminaoglou, E. Ibar, E. Isaak, K. Ivison, R. Lagache, G. Laurent, G. Levenson, L. Lu, N. Madden, S. Maffei, B. Mainetti, G. Marchetti, L. Marsden, G. Nguyen, H. O'Halloran, B. Oliver, S. Omont, A. Page, M. Panuzzo, P. Papageorgiou, A. Pearson, C. Pérez-Fournon, I. Pohlen, M. Rigopoulou, D. Rizzo, D. Roseboom, I. Rowan-Robinson, M. Portal, M. Schulz, B. Scott, D. Seymour, Nick Shupe, D. Smith, A. Stevens, J. Symeonidis, M. Trichas, M. Tugwell, K. Vaccari, M. Valtchanov, I. Vieira, J. Vigroux, L. Wang, L. Ward, R. Wright, G. Xu, C. Zemcov, M. HerMES: Deep galaxy number counts from a P(D) fluctuation analysis of SPIRE Science Demonstration Phase observations
title	HerMES: Deep galaxy number counts from a P(D) fluctuation analysis of SPIRE Science Demonstration Phase observations
title_full	HerMES: Deep galaxy number counts from a P(D) fluctuation analysis of SPIRE Science Demonstration Phase observations
title_fullStr	HerMES: Deep galaxy number counts from a P(D) fluctuation analysis of SPIRE Science Demonstration Phase observations
title_full_unstemmed	HerMES: Deep galaxy number counts from a P(D) fluctuation analysis of SPIRE Science Demonstration Phase observations
title_short	HerMES: Deep galaxy number counts from a P(D) fluctuation analysis of SPIRE Science Demonstration Phase observations
title_sort	hermes: deep galaxy number counts from a p(d) fluctuation analysis of spire science demonstration phase observations
url	http://hdl.handle.net/20.500.11937/17098

HerMES: Deep galaxy number counts from a P(D) fluctuation analysis of SPIRE Science Demonstration Phase observations

Similar Items