CFHTLenS: the Canada-France-Hawaii Telescope Lensing Survey
Abstract We present the Canada-France-Hawaii Telescope Lensing Survey (CFHTLenS) that accurately determines a weak gravitational lensing signal from the full 154 deg2 of deep multicolour data obtained by the CFHT Legacy Survey. Weak gravitational lensing by large-scale structure is widely recognized...
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| Veröffentlicht in: | Monthly notices of the Royal Astronomical Society 2012-11, Vol.427 (1), p.146-166 |
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| creator | Heymans, Catherine van Waerbeke, Ludovic Miller, Lance Erben, Thomas Hildebrandt, Hendrik Hoekstra, Henk Kitching, Thomas D. Mellier, Yannick Simon, Patrick Bonnett, Christopher Coupon, Jean Fu, Liping Harnois-Déraps, Joachim Hudson, Michael J. Kilbinger, Martin Kuijken, Koenraad Rowe, Barnaby Schrabback, Tim Semboloni, Elisabetta van Uitert, Edo Vafaei, Sanaz Velander, Malin |
| description | Abstract
We present the Canada-France-Hawaii Telescope Lensing Survey (CFHTLenS) that accurately determines a weak gravitational lensing signal from the full 154 deg2 of deep multicolour data obtained by the CFHT Legacy Survey. Weak gravitational lensing by large-scale structure is widely recognized as one of the most powerful but technically challenging probes of cosmology. We outline the CFHTLenS analysis pipeline, describing how and why every step of the chain from the raw pixel data to the lensing shear and photometric redshift measurement has been revised and improved compared to previous analyses of a subset of the same data. We present a novel method to identify data which contributes a non-negligible contamination to our sample and quantify the required level of calibration for the survey. Through a series of cosmology-insensitive tests we demonstrate the robustness of the resulting cosmic shear signal, presenting a science-ready shear and photometric redshift catalogue for future exploitation. |
| doi_str_mv | 10.1111/j.1365-2966.2012.21952.x |
| format | Article |
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We present the Canada-France-Hawaii Telescope Lensing Survey (CFHTLenS) that accurately determines a weak gravitational lensing signal from the full 154 deg2 of deep multicolour data obtained by the CFHT Legacy Survey. Weak gravitational lensing by large-scale structure is widely recognized as one of the most powerful but technically challenging probes of cosmology. We outline the CFHTLenS analysis pipeline, describing how and why every step of the chain from the raw pixel data to the lensing shear and photometric redshift measurement has been revised and improved compared to previous analyses of a subset of the same data. We present a novel method to identify data which contributes a non-negligible contamination to our sample and quantify the required level of calibration for the survey. Through a series of cosmology-insensitive tests we demonstrate the robustness of the resulting cosmic shear signal, presenting a science-ready shear and photometric redshift catalogue for future exploitation.</description><identifier>ISSN: 0035-8711</identifier><identifier>EISSN: 1365-2966</identifier><identifier>DOI: 10.1111/j.1365-2966.2012.21952.x</identifier><language>eng</language><publisher>Oxford, UK: Blackwell Science Ltd</publisher><subject>Astrophysics ; cosmology: observations ; gravitational lensing: weak ; Gravity ; Sciences of the Universe ; Space telescopes</subject><ispartof>Monthly notices of the Royal Astronomical Society, 2012-11, Vol.427 (1), p.146-166</ispartof><rights>2012 RAS 2012</rights><rights>2012 The Authors Monthly Notices of the Royal Astronomical Society © 2012 RAS</rights><rights>Monthly Notices of the Royal Astronomical Society © 2012 RAS</rights><rights>Distributed under a Creative Commons Attribution 4.0 International License</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4542-aa728d1955fa5ad83e321805d37ee3e3237e34fa00b58f4909667d20161b68013</citedby><orcidid>0000-0001-9513-7138</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1111%2Fj.1365-2966.2012.21952.x$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1111%2Fj.1365-2966.2012.21952.x$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>230,314,776,780,881,1411,27901,27902,45550,45551</link.rule.ids><backlink>$$Uhttps://hal.science/hal-03645723$$DView record in HAL$$Hfree_for_read</backlink></links><search><creatorcontrib>Heymans, Catherine</creatorcontrib><creatorcontrib>van Waerbeke, Ludovic</creatorcontrib><creatorcontrib>Miller, Lance</creatorcontrib><creatorcontrib>Erben, Thomas</creatorcontrib><creatorcontrib>Hildebrandt, Hendrik</creatorcontrib><creatorcontrib>Hoekstra, Henk</creatorcontrib><creatorcontrib>Kitching, Thomas D.</creatorcontrib><creatorcontrib>Mellier, Yannick</creatorcontrib><creatorcontrib>Simon, Patrick</creatorcontrib><creatorcontrib>Bonnett, Christopher</creatorcontrib><creatorcontrib>Coupon, Jean</creatorcontrib><creatorcontrib>Fu, Liping</creatorcontrib><creatorcontrib>Harnois-Déraps, Joachim</creatorcontrib><creatorcontrib>Hudson, Michael J.</creatorcontrib><creatorcontrib>Kilbinger, Martin</creatorcontrib><creatorcontrib>Kuijken, Koenraad</creatorcontrib><creatorcontrib>Rowe, Barnaby</creatorcontrib><creatorcontrib>Schrabback, Tim</creatorcontrib><creatorcontrib>Semboloni, Elisabetta</creatorcontrib><creatorcontrib>van Uitert, Edo</creatorcontrib><creatorcontrib>Vafaei, Sanaz</creatorcontrib><creatorcontrib>Velander, Malin</creatorcontrib><title>CFHTLenS: the Canada-France-Hawaii Telescope Lensing Survey</title><title>Monthly notices of the Royal Astronomical Society</title><addtitle>Mon. Not. R. Astron. Soc</addtitle><description>Abstract
We present the Canada-France-Hawaii Telescope Lensing Survey (CFHTLenS) that accurately determines a weak gravitational lensing signal from the full 154 deg2 of deep multicolour data obtained by the CFHT Legacy Survey. Weak gravitational lensing by large-scale structure is widely recognized as one of the most powerful but technically challenging probes of cosmology. We outline the CFHTLenS analysis pipeline, describing how and why every step of the chain from the raw pixel data to the lensing shear and photometric redshift measurement has been revised and improved compared to previous analyses of a subset of the same data. We present a novel method to identify data which contributes a non-negligible contamination to our sample and quantify the required level of calibration for the survey. Through a series of cosmology-insensitive tests we demonstrate the robustness of the resulting cosmic shear signal, presenting a science-ready shear and photometric redshift catalogue for future exploitation.</description><subject>Astrophysics</subject><subject>cosmology: observations</subject><subject>gravitational lensing: weak</subject><subject>Gravity</subject><subject>Sciences of the Universe</subject><subject>Space telescopes</subject><issn>0035-8711</issn><issn>1365-2966</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><recordid>eNp1kE1Lw0AQhhdRsFb_Q8CLHjbOfiZVEEqwRogKtp6XbbKxCWkSk6Yf_95NKx4U9zK7M8-8O_Mi5BBwiT03uUuYFJiOpHQpEOpSMhLU3R6hwU_hGA0AmMC-R8gpOmvbHAA4o3KA7oJJOItMOb11VgvjBLrUicaTRpexwaHe6CxzZqYwbVzVxrFgm5UfzrRr1mZ3jk5SXbTm4jsO0fvkYRaEOHp9fArGEY654BRr7VE_sVOJVAud-MwwSnwQCfOM6R82Mp5qgLnwUz4CO7GX2F0kmUsfCBui64PuQheqbrKlbnaq0pkKx5Hqc8AkFx5l6569OrB1U312pl2pZdbGpih0aaquVYRSQjgAlRa9_IXmVdeUdhNFCPU8kIyDpe4P1CYrzO7newKqt1_lqndZ9S6r3n61t19t1fPL2_5qBdhBoOrqf9rxn3b2BbuqhSk</recordid><startdate>20121121</startdate><enddate>20121121</enddate><creator>Heymans, Catherine</creator><creator>van Waerbeke, Ludovic</creator><creator>Miller, Lance</creator><creator>Erben, Thomas</creator><creator>Hildebrandt, Hendrik</creator><creator>Hoekstra, Henk</creator><creator>Kitching, Thomas D.</creator><creator>Mellier, Yannick</creator><creator>Simon, Patrick</creator><creator>Bonnett, Christopher</creator><creator>Coupon, Jean</creator><creator>Fu, Liping</creator><creator>Harnois-Déraps, Joachim</creator><creator>Hudson, Michael J.</creator><creator>Kilbinger, Martin</creator><creator>Kuijken, Koenraad</creator><creator>Rowe, Barnaby</creator><creator>Schrabback, Tim</creator><creator>Semboloni, Elisabetta</creator><creator>van Uitert, Edo</creator><creator>Vafaei, Sanaz</creator><creator>Velander, Malin</creator><general>Blackwell Science Ltd</general><general>Oxford University Press</general><general>Oxford University Press (OUP): Policy P - Oxford Open Option A</general><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>7TG</scope><scope>KL.</scope><scope>1XC</scope><scope>VOOES</scope><orcidid>https://orcid.org/0000-0001-9513-7138</orcidid></search><sort><creationdate>20121121</creationdate><title>CFHTLenS: the Canada-France-Hawaii Telescope Lensing Survey</title><author>Heymans, Catherine ; 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We present the Canada-France-Hawaii Telescope Lensing Survey (CFHTLenS) that accurately determines a weak gravitational lensing signal from the full 154 deg2 of deep multicolour data obtained by the CFHT Legacy Survey. Weak gravitational lensing by large-scale structure is widely recognized as one of the most powerful but technically challenging probes of cosmology. We outline the CFHTLenS analysis pipeline, describing how and why every step of the chain from the raw pixel data to the lensing shear and photometric redshift measurement has been revised and improved compared to previous analyses of a subset of the same data. We present a novel method to identify data which contributes a non-negligible contamination to our sample and quantify the required level of calibration for the survey. Through a series of cosmology-insensitive tests we demonstrate the robustness of the resulting cosmic shear signal, presenting a science-ready shear and photometric redshift catalogue for future exploitation.</abstract><cop>Oxford, UK</cop><pub>Blackwell Science Ltd</pub><doi>10.1111/j.1365-2966.2012.21952.x</doi><tpages>21</tpages><orcidid>https://orcid.org/0000-0001-9513-7138</orcidid><oa>free_for_read</oa></addata></record> |
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| ispartof | Monthly notices of the Royal Astronomical Society, 2012-11, Vol.427 (1), p.146-166 |
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| language | eng |
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| source | Wiley Online Library; Oxford Open |
| subjects | Astrophysics cosmology: observations gravitational lensing: weak Gravity Sciences of the Universe Space telescopes |
| title | CFHTLenS: the Canada-France-Hawaii Telescope Lensing Survey |
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