The Herschel Multi-Tiered Extragalactic Survey: Source extraction and cross-identifications in confusion-dominated SPIRE images

We present the cross-identification and source photometry techniques used to process Herschel SPIRE imaging taken as part of the Herschel Multi-Tiered Extragalactic Survey (HerMES). Cross-identifications are performed in map-space so as to minimize source-blending effects. We make use of a combinati...

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Main Authors:	Roseboom, I., Oliver, S., Kunz, M., Altieri, B., Amblard, A., Arumugam, V., Auld, R., Aussel, H., Babbedge, T., Béthermin, M., Blain, A., Bock, J., Boselli, A., Brisbin, D., Buat, V., Burgarella, D., Castro-Rodríguez, N., Cava, A., Chanial, P., Chapin, E., Clements, D., Conley, A., Conversi, L., Cooray, A., Dowell, C., Dwek, E., Dye, S., Eales, S., Elbaz, D., Farrah, D., Fox, M., Franceschini, A., Gear, W., Glenn, J., Solares, E., Griffin, M., Halpern, M., Harwit, M., Hatziminaoglou, E., Huang, J., Ibar, E., Isaak, K., Ivison, R., Lagache, G., Levenson, L., Lu, N., Madden, S., Maffei, B., Mainetti, G., Marchetti, L., Marsden, G., Mortier, A., Nguyen, H., O'Halloran, B., Omont, A., Page, M., Panuzzo, P., Papageorgiou, A., Patel, H., Pearson, C., Pérez-Fournon, I., Pohlen, M., Rawlings, J., Raymond, G., Rigopoulou, D., Rizzo, D., 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.
Format:	Journal Article
Published:	Oxford University Press 2010
Online Access:	http://hdl.handle.net/20.500.11937/19636

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author	Roseboom, I. Oliver, S. Kunz, M. Altieri, B. Amblard, A. Arumugam, V. Auld, R. Aussel, H. Babbedge, T. Béthermin, M. Blain, A. Bock, J. Boselli, A. Brisbin, D. Buat, V. Burgarella, D. Castro-Rodríguez, N. Cava, A. Chanial, P. Chapin, E. Clements, D. Conley, A. Conversi, L. Cooray, A. Dowell, C. Dwek, E. Dye, S. Eales, S. Elbaz, D. Farrah, D. Fox, M. Franceschini, A. Gear, W. Glenn, J. Solares, E. Griffin, M. Halpern, M. Harwit, M. Hatziminaoglou, E. Huang, J. Ibar, E. Isaak, K. Ivison, R. Lagache, G. Levenson, L. Lu, N. Madden, S. Maffei, B. Mainetti, G. Marchetti, L. Marsden, G. Mortier, A. Nguyen, H. O'Halloran, B. Omont, A. Page, M. Panuzzo, P. Papageorgiou, A. Patel, H. Pearson, C. Pérez-Fournon, I. Pohlen, M. Rawlings, J. Raymond, G. Rigopoulou, D. Rizzo, D. 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.
author_facet	Roseboom, I. Oliver, S. Kunz, M. Altieri, B. Amblard, A. Arumugam, V. Auld, R. Aussel, H. Babbedge, T. Béthermin, M. Blain, A. Bock, J. Boselli, A. Brisbin, D. Buat, V. Burgarella, D. Castro-Rodríguez, N. Cava, A. Chanial, P. Chapin, E. Clements, D. Conley, A. Conversi, L. Cooray, A. Dowell, C. Dwek, E. Dye, S. Eales, S. Elbaz, D. Farrah, D. Fox, M. Franceschini, A. Gear, W. Glenn, J. Solares, E. Griffin, M. Halpern, M. Harwit, M. Hatziminaoglou, E. Huang, J. Ibar, E. Isaak, K. Ivison, R. Lagache, G. Levenson, L. Lu, N. Madden, S. Maffei, B. Mainetti, G. Marchetti, L. Marsden, G. Mortier, A. Nguyen, H. O'Halloran, B. Omont, A. Page, M. Panuzzo, P. Papageorgiou, A. Patel, H. Pearson, C. Pérez-Fournon, I. Pohlen, M. Rawlings, J. Raymond, G. Rigopoulou, D. Rizzo, D. 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.
author_sort	Roseboom, I.
building	Curtin Institutional Repository
collection	Online Access
description	We present the cross-identification and source photometry techniques used to process Herschel SPIRE imaging taken as part of the Herschel Multi-Tiered Extragalactic Survey (HerMES). Cross-identifications are performed in map-space so as to minimize source-blending effects. We make use of a combination of linear inversion and model selection techniques to produce reliable cross-identification catalogues based on Spitzer MIPS 24-µm source positions. Testing on simulations and real Herschel observations shows that this approach gives robust results for even the faintest sources (S250~ 10 mJy). We apply our new technique to HerMES SPIRE observations taken as part of the science demonstration phase of Herschel. For our real SPIRE observations, we show that, for bright unconfused sources, our flux density estimates are in good agreement with those produced via more traditional point source detection methods (SUSSEXtractor) by Smith et al. When compared to the measured number density of sources in the SPIRE bands, we show that our method allows the recovery of a larger fraction of faint sources than these traditional methods. However, this completeness is heavily dependent on the relative depth of the existing 24-µm catalogues and SPIRE imaging. Using our deepest multiwavelength data set in the GOODS-N, we estimate that the use of shallow 24-µm catalogues in our other fields introduces an incompleteness at faint levels of between 20-40 per cent at 250 µm. © 2010 The Authors. Journal compilation © 2010 RAS.
first_indexed	2025-11-14T07:31:16Z
format	Journal Article
id	curtin-20.500.11937-19636
institution	Curtin University Malaysia
institution_category	Local University
last_indexed	2025-11-14T07:31:16Z
publishDate	2010
publisher	Oxford University Press
recordtype	eprints
repository_type	Digital Repository
spelling	curtin-20.500.11937-196362017-09-13T13:47:29Z The Herschel Multi-Tiered Extragalactic Survey: Source extraction and cross-identifications in confusion-dominated SPIRE images Roseboom, I. Oliver, S. Kunz, M. Altieri, B. Amblard, A. Arumugam, V. Auld, R. Aussel, H. Babbedge, T. Béthermin, M. Blain, A. Bock, J. Boselli, A. Brisbin, D. Buat, V. Burgarella, D. Castro-Rodríguez, N. Cava, A. Chanial, P. Chapin, E. Clements, D. Conley, A. Conversi, L. Cooray, A. Dowell, C. Dwek, E. Dye, S. Eales, S. Elbaz, D. Farrah, D. Fox, M. Franceschini, A. Gear, W. Glenn, J. Solares, E. Griffin, M. Halpern, M. Harwit, M. Hatziminaoglou, E. Huang, J. Ibar, E. Isaak, K. Ivison, R. Lagache, G. Levenson, L. Lu, N. Madden, S. Maffei, B. Mainetti, G. Marchetti, L. Marsden, G. Mortier, A. Nguyen, H. O'Halloran, B. Omont, A. Page, M. Panuzzo, P. Papageorgiou, A. Patel, H. Pearson, C. Pérez-Fournon, I. Pohlen, M. Rawlings, J. Raymond, G. Rigopoulou, D. Rizzo, D. 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. We present the cross-identification and source photometry techniques used to process Herschel SPIRE imaging taken as part of the Herschel Multi-Tiered Extragalactic Survey (HerMES). Cross-identifications are performed in map-space so as to minimize source-blending effects. We make use of a combination of linear inversion and model selection techniques to produce reliable cross-identification catalogues based on Spitzer MIPS 24-µm source positions. Testing on simulations and real Herschel observations shows that this approach gives robust results for even the faintest sources (S250~ 10 mJy). We apply our new technique to HerMES SPIRE observations taken as part of the science demonstration phase of Herschel. For our real SPIRE observations, we show that, for bright unconfused sources, our flux density estimates are in good agreement with those produced via more traditional point source detection methods (SUSSEXtractor) by Smith et al. When compared to the measured number density of sources in the SPIRE bands, we show that our method allows the recovery of a larger fraction of faint sources than these traditional methods. However, this completeness is heavily dependent on the relative depth of the existing 24-µm catalogues and SPIRE imaging. Using our deepest multiwavelength data set in the GOODS-N, we estimate that the use of shallow 24-µm catalogues in our other fields introduces an incompleteness at faint levels of between 20-40 per cent at 250 µm. © 2010 The Authors. Journal compilation © 2010 RAS. 2010 Journal Article http://hdl.handle.net/20.500.11937/19636 10.1111/j.1365-2966.2010.17634.x Oxford University Press unknown
spellingShingle	Roseboom, I. Oliver, S. Kunz, M. Altieri, B. Amblard, A. Arumugam, V. Auld, R. Aussel, H. Babbedge, T. Béthermin, M. Blain, A. Bock, J. Boselli, A. Brisbin, D. Buat, V. Burgarella, D. Castro-Rodríguez, N. Cava, A. Chanial, P. Chapin, E. Clements, D. Conley, A. Conversi, L. Cooray, A. Dowell, C. Dwek, E. Dye, S. Eales, S. Elbaz, D. Farrah, D. Fox, M. Franceschini, A. Gear, W. Glenn, J. Solares, E. Griffin, M. Halpern, M. Harwit, M. Hatziminaoglou, E. Huang, J. Ibar, E. Isaak, K. Ivison, R. Lagache, G. Levenson, L. Lu, N. Madden, S. Maffei, B. Mainetti, G. Marchetti, L. Marsden, G. Mortier, A. Nguyen, H. O'Halloran, B. Omont, A. Page, M. Panuzzo, P. Papageorgiou, A. Patel, H. Pearson, C. Pérez-Fournon, I. Pohlen, M. Rawlings, J. Raymond, G. Rigopoulou, D. Rizzo, D. 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. The Herschel Multi-Tiered Extragalactic Survey: Source extraction and cross-identifications in confusion-dominated SPIRE images
title	The Herschel Multi-Tiered Extragalactic Survey: Source extraction and cross-identifications in confusion-dominated SPIRE images
title_full	The Herschel Multi-Tiered Extragalactic Survey: Source extraction and cross-identifications in confusion-dominated SPIRE images
title_fullStr	The Herschel Multi-Tiered Extragalactic Survey: Source extraction and cross-identifications in confusion-dominated SPIRE images
title_full_unstemmed	The Herschel Multi-Tiered Extragalactic Survey: Source extraction and cross-identifications in confusion-dominated SPIRE images
title_short	The Herschel Multi-Tiered Extragalactic Survey: Source extraction and cross-identifications in confusion-dominated SPIRE images
title_sort	herschel multi-tiered extragalactic survey: source extraction and cross-identifications in confusion-dominated spire images
url	http://hdl.handle.net/20.500.11937/19636

The Herschel Multi-Tiered Extragalactic Survey: Source extraction and cross-identifications in confusion-dominated SPIRE images

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