CFHTLenS: the Canada-France-Hawaii Telescope Lensing Survey - imaging data and catalogue products

T. Erben; H. Hildebrandt; L. Miller; L. van Waerbeke; C. Heymans; H. Hoekstra; T. D. Kitching; Y. Mellier; J. Benjamin; C. Blake; C. Bonnett; O. Cordes; J. Coupon; L. Fu; R. Gavazzi; Bryan Gillis; E. Grocutt; S. D. J. Gwyn; K. Holhjem; M. J. Hudson; M. Kilbinger; K. Kuijken; M. Milkeraitis; B. T. P. Rowe; T. Schrabback; E. Semboloni; P. Simon; M. Smit; O. Toader; S. Vafaei; E. van Uitert; M. Velander

doi:10.1093/mnras/stt928

CFHTLenS: the Canada-France-Hawaii Telescope Lensing Survey - imaging data and catalogue products

T. Erben^*, H. Hildebrandt, L. Miller, L. van Waerbeke, C. Heymans, H. Hoekstra, T. D. Kitching, Y. Mellier, J. Benjamin, C. Blake, C. Bonnett, O. Cordes, J. Coupon, L. Fu, R. Gavazzi, Bryan Gillis, E. Grocutt, S. D. J. Gwyn, K. Holhjem, M. J. HudsonM. Kilbinger, K. Kuijken, M. Milkeraitis, B. T. P. Rowe, T. Schrabback, E. Semboloni, P. Simon, M. Smit, O. Toader, S. Vafaei, E. van Uitert, M. Velander

^*Corresponding author for this work

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

We present data products from the Canada-France-Hawaii Telescope Lensing Survey (CFHTLenS). CFHTLenS is based on the Wide component of the Canada-France-Hawaii Telescope Legacy Survey (CFHTLS). It encompasses 154 deg(2) of deep, optical, high-quality, sub-arcsecond imaging data in the five optical filters u*g(')r(')i(')z('). The scientific aims of the CFHTLenS team are weak gravitational lensing studies supported by photometric redshift estimates for the galaxies. This paper presents our data processing of the complete CFHTLenS data set. We were able to obtain a data set with very good image quality and high-quality astrometric and photometric calibration. Our external astrometric accuracy is between 60 and 70 mas with respect to Sloan Digital Sky Survey (SDSS) data, and the internal alignment in all filters is around 30 mas. Our average photometric calibration shows a dispersion of the order of 0.01-0.03 mag for g(')r(')i(')z(') and about 0.04 mag for u* with respect to SDSS sources down to i(SDSS) <21. We demonstrate in accompanying papers that our data meet necessary requirements to fully exploit the survey for weak gravitational lensing analyses in connection with photometric redshift studies. In the spirit of the CFHTLS, all our data products are released to the astronomical community via the Canadian Astronomy Data Centre at ext-link-type="uri" xlink:href="http://www.cadc-ccda.hia-iha.nrc-cnrc.gc.ca/community/CFHTLens/query.html" xmlns:xlink="http://www.w3.org/1999/xlink">http://www.cadc-ccda.hia-iha.nrc-cnrc.gc.ca/community/CFHTLens/query.html. We give a description and how-to manuals of the public products which include image pixel data, source catalogues with photometric redshift estimates and all relevant quantities to perform weak lensing studies.

Original language	English
Pages (from-to)	2545-2563
Number of pages	19
Journal	Monthly Notices of the Royal Astronomical Society
Volume	433
Issue number	3
DOIs	https://doi.org/10.1093/mnras/stt928
Publication status	Published - Aug 2013

Keywords / Materials (for Non-textual outputs)

methods: data analysis
cosmology: observations
DIGITAL SKY SURVEY
COSMIC SHEAR ANALYSIS
BONN DEEP SURVEY
DATA RELEASE
GALAXY CLUSTERS
DARK-ENERGY
SDSS-III
WEAK
CONSTRAINTS
WIDE

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10.1093/mnras/stt928

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Erben, T., Hildebrandt, H., Miller, L., van Waerbeke, L., Heymans, C., Hoekstra, H., Kitching, T. D., Mellier, Y., Benjamin, J., Blake, C., Bonnett, C., Cordes, O., Coupon, J., Fu, L., Gavazzi, R., Gillis, B., Grocutt, E., Gwyn, S. D. J., Holhjem, K., ... Velander, M. (2013). CFHTLenS: the Canada-France-Hawaii Telescope Lensing Survey - imaging data and catalogue products. Monthly Notices of the Royal Astronomical Society, 433(3), 2545-2563. https://doi.org/10.1093/mnras/stt928

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title = "CFHTLenS: the Canada-France-Hawaii Telescope Lensing Survey - imaging data and catalogue products",

abstract = "We present data products from the Canada-France-Hawaii Telescope Lensing Survey (CFHTLenS). CFHTLenS is based on the Wide component of the Canada-France-Hawaii Telescope Legacy Survey (CFHTLS). It encompasses 154 deg(2) of deep, optical, high-quality, sub-arcsecond imaging data in the five optical filters u*g(')r(')i(')z('). The scientific aims of the CFHTLenS team are weak gravitational lensing studies supported by photometric redshift estimates for the galaxies. This paper presents our data processing of the complete CFHTLenS data set. We were able to obtain a data set with very good image quality and high-quality astrometric and photometric calibration. Our external astrometric accuracy is between 60 and 70 mas with respect to Sloan Digital Sky Survey (SDSS) data, and the internal alignment in all filters is around 30 mas. Our average photometric calibration shows a dispersion of the order of 0.01-0.03 mag for g(')r(')i(')z(') and about 0.04 mag for u* with respect to SDSS sources down to i(SDSS) <21. We demonstrate in accompanying papers that our data meet necessary requirements to fully exploit the survey for weak gravitational lensing analyses in connection with photometric redshift studies. In the spirit of the CFHTLS, all our data products are released to the astronomical community via the Canadian Astronomy Data Centre at ext-link-type={"}uri{"} xlink:href={"}http://www.cadc-ccda.hia-iha.nrc-cnrc.gc.ca/community/CFHTLens/query.html{"} xmlns:xlink={"}http://www.w3.org/1999/xlink{"}>http://www.cadc-ccda.hia-iha.nrc-cnrc.gc.ca/community/CFHTLens/query.html. We give a description and how-to manuals of the public products which include image pixel data, source catalogues with photometric redshift estimates and all relevant quantities to perform weak lensing studies.",

keywords = "methods: data analysis, cosmology: observations, DIGITAL SKY SURVEY, COSMIC SHEAR ANALYSIS, BONN DEEP SURVEY, DATA RELEASE, GALAXY CLUSTERS, DARK-ENERGY, SDSS-III, WEAK, CONSTRAINTS, WIDE",

author = "T. Erben and H. Hildebrandt and L. Miller and {van Waerbeke}, L. and C. Heymans and H. Hoekstra and Kitching, {T. D.} and Y. Mellier and J. Benjamin and C. Blake and C. Bonnett and O. Cordes and J. Coupon and L. Fu and R. Gavazzi and Bryan Gillis and E. Grocutt and Gwyn, {S. D. J.} and K. Holhjem and Hudson, {M. J.} and M. Kilbinger and K. Kuijken and M. Milkeraitis and Rowe, {B. T. P.} and T. Schrabback and E. Semboloni and P. Simon and M. Smit and O. Toader and S. Vafaei and {van Uitert}, E. and M. Velander",

year = "2013",

month = aug,

doi = "10.1093/mnras/stt928",

language = "English",

volume = "433",

pages = "2545--2563",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "0035-8711",

publisher = "Oxford University Press",

number = "3",

}

Erben, T, Hildebrandt, H, Miller, L, van Waerbeke, L, Heymans, C, Hoekstra, H, Kitching, TD, Mellier, Y, Benjamin, J, Blake, C, Bonnett, C, Cordes, O, Coupon, J, Fu, L, Gavazzi, R, Gillis, B, Grocutt, E, Gwyn, SDJ, Holhjem, K, Hudson, MJ, Kilbinger, M, Kuijken, K, Milkeraitis, M, Rowe, BTP, Schrabback, T, Semboloni, E, Simon, P, Smit, M, Toader, O, Vafaei, S, van Uitert, E & Velander, M 2013, 'CFHTLenS: the Canada-France-Hawaii Telescope Lensing Survey - imaging data and catalogue products', Monthly Notices of the Royal Astronomical Society, vol. 433, no. 3, pp. 2545-2563. https://doi.org/10.1093/mnras/stt928

TY - JOUR

T1 - CFHTLenS: the Canada-France-Hawaii Telescope Lensing Survey - imaging data and catalogue products

AU - Erben, T.

AU - Hildebrandt, H.

AU - Miller, L.

AU - van Waerbeke, L.

AU - Heymans, C.

AU - Hoekstra, H.

AU - Kitching, T. D.

AU - Mellier, Y.

AU - Benjamin, J.

AU - Blake, C.

AU - Bonnett, C.

AU - Cordes, O.

AU - Coupon, J.

AU - Fu, L.

AU - Gavazzi, R.

AU - Gillis, Bryan

AU - Grocutt, E.

AU - Gwyn, S. D. J.

AU - Holhjem, K.

AU - Hudson, M. J.

AU - Kilbinger, M.

AU - Kuijken, K.

AU - Milkeraitis, M.

AU - Rowe, B. T. P.

AU - Schrabback, T.

AU - Semboloni, E.

AU - Simon, P.

AU - Smit, M.

AU - Toader, O.

AU - Vafaei, S.

AU - van Uitert, E.

AU - Velander, M.

PY - 2013/8

Y1 - 2013/8

N2 - We present data products from the Canada-France-Hawaii Telescope Lensing Survey (CFHTLenS). CFHTLenS is based on the Wide component of the Canada-France-Hawaii Telescope Legacy Survey (CFHTLS). It encompasses 154 deg(2) of deep, optical, high-quality, sub-arcsecond imaging data in the five optical filters u*g(')r(')i(')z('). The scientific aims of the CFHTLenS team are weak gravitational lensing studies supported by photometric redshift estimates for the galaxies. This paper presents our data processing of the complete CFHTLenS data set. We were able to obtain a data set with very good image quality and high-quality astrometric and photometric calibration. Our external astrometric accuracy is between 60 and 70 mas with respect to Sloan Digital Sky Survey (SDSS) data, and the internal alignment in all filters is around 30 mas. Our average photometric calibration shows a dispersion of the order of 0.01-0.03 mag for g(')r(')i(')z(') and about 0.04 mag for u* with respect to SDSS sources down to i(SDSS) <21. We demonstrate in accompanying papers that our data meet necessary requirements to fully exploit the survey for weak gravitational lensing analyses in connection with photometric redshift studies. In the spirit of the CFHTLS, all our data products are released to the astronomical community via the Canadian Astronomy Data Centre at ext-link-type="uri" xlink:href="http://www.cadc-ccda.hia-iha.nrc-cnrc.gc.ca/community/CFHTLens/query.html" xmlns:xlink="http://www.w3.org/1999/xlink">http://www.cadc-ccda.hia-iha.nrc-cnrc.gc.ca/community/CFHTLens/query.html. We give a description and how-to manuals of the public products which include image pixel data, source catalogues with photometric redshift estimates and all relevant quantities to perform weak lensing studies.

AB - We present data products from the Canada-France-Hawaii Telescope Lensing Survey (CFHTLenS). CFHTLenS is based on the Wide component of the Canada-France-Hawaii Telescope Legacy Survey (CFHTLS). It encompasses 154 deg(2) of deep, optical, high-quality, sub-arcsecond imaging data in the five optical filters u*g(')r(')i(')z('). The scientific aims of the CFHTLenS team are weak gravitational lensing studies supported by photometric redshift estimates for the galaxies. This paper presents our data processing of the complete CFHTLenS data set. We were able to obtain a data set with very good image quality and high-quality astrometric and photometric calibration. Our external astrometric accuracy is between 60 and 70 mas with respect to Sloan Digital Sky Survey (SDSS) data, and the internal alignment in all filters is around 30 mas. Our average photometric calibration shows a dispersion of the order of 0.01-0.03 mag for g(')r(')i(')z(') and about 0.04 mag for u* with respect to SDSS sources down to i(SDSS) <21. We demonstrate in accompanying papers that our data meet necessary requirements to fully exploit the survey for weak gravitational lensing analyses in connection with photometric redshift studies. In the spirit of the CFHTLS, all our data products are released to the astronomical community via the Canadian Astronomy Data Centre at ext-link-type="uri" xlink:href="http://www.cadc-ccda.hia-iha.nrc-cnrc.gc.ca/community/CFHTLens/query.html" xmlns:xlink="http://www.w3.org/1999/xlink">http://www.cadc-ccda.hia-iha.nrc-cnrc.gc.ca/community/CFHTLens/query.html. We give a description and how-to manuals of the public products which include image pixel data, source catalogues with photometric redshift estimates and all relevant quantities to perform weak lensing studies.

KW - methods: data analysis

KW - cosmology: observations

KW - DIGITAL SKY SURVEY

KW - COSMIC SHEAR ANALYSIS

KW - BONN DEEP SURVEY

KW - DATA RELEASE

KW - GALAXY CLUSTERS

KW - DARK-ENERGY

KW - SDSS-III

KW - WEAK

KW - CONSTRAINTS

KW - WIDE

U2 - 10.1093/mnras/stt928

DO - 10.1093/mnras/stt928

M3 - Article

SN - 0035-8711

VL - 433

SP - 2545

EP - 2563

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 3

ER -

CFHTLenS: the Canada-France-Hawaii Telescope Lensing Survey - imaging data and catalogue products

Abstract

Keywords / Materials (for Non-textual outputs)

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