Dark Energy Survey Year 1 results: weak lensing shape catalogues
We present two galaxy shape catalogues from the Dark Energy Survey Year 1 data set, covering 1500 deg2 with a median redshift of 0.59. The catalogues cover two main fields: Stripe 82, and an area overlapping the South Pole Telescope survey region. We describe our data analysis process and in particu...
Published in: | Monthly Notices of the Royal Astronomical Society |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
Oxford University Press (OUP)
2018
|
Subjects: | |
Online Access: | http://raiith.iith.ac.in/6662/ https://doi.org/10.1093/mnras/sty2219 |
id |
ftiith:oai:raiith.iith.ac.in:6662 |
---|---|
record_format |
openpolar |
spelling |
ftiith:oai:raiith.iith.ac.in:6662 2023-05-15T18:22:26+02:00 Dark Energy Survey Year 1 results: weak lensing shape catalogues Desai, Shantanu Zuntz, J Sheldon, E 2018 http://raiith.iith.ac.in/6662/ https://doi.org/10.1093/mnras/sty2219 unknown Oxford University Press (OUP) Desai, Shantanu and Zuntz, J and Sheldon, E and et al, . (2018) Dark Energy Survey Year 1 results: weak lensing shape catalogues. Monthly Notices of the Royal Astronomical Society, 481 (1). pp. 1149-1182. ISSN 0035-8711 Physics Article PeerReviewed 2018 ftiith https://doi.org/10.1093/mnras/sty2219 2022-09-28T08:35:49Z We present two galaxy shape catalogues from the Dark Energy Survey Year 1 data set, covering 1500 deg2 with a median redshift of 0.59. The catalogues cover two main fields: Stripe 82, and an area overlapping the South Pole Telescope survey region. We describe our data analysis process and in particular our shape measurement using two independent shear measurement pipelines, METACALIBRATION and IM3SHAPE. The METACALIBRATION catalogue uses a Gaussian model with an innovative internal calibration scheme, and was applied to riz bands, yielding 34.8M objects. The IM3SHAPE catalogue uses a maximum-likelihood bulge/disc model calibrated using simulations, and was applied to r-band data, yielding 21.9M objects. Both catalogues pass a suite of null tests that demonstrate their fitness for use in weak lensing science. We estimate the 1σ uncertainties in multiplicative shear calibration to be 0.013 and 0.025 for the METACALIBRATION and IM3SHAPE catalogues, respectively. Article in Journal/Newspaper South pole Research Archive of Indian Institute of Technology, Hyderabad (RAIITH) South Pole Stripe ENVELOPE(9.914,9.914,63.019,63.019) Monthly Notices of the Royal Astronomical Society 481 1 1149 1182 |
institution |
Open Polar |
collection |
Research Archive of Indian Institute of Technology, Hyderabad (RAIITH) |
op_collection_id |
ftiith |
language |
unknown |
topic |
Physics |
spellingShingle |
Physics Desai, Shantanu Zuntz, J Sheldon, E Dark Energy Survey Year 1 results: weak lensing shape catalogues |
topic_facet |
Physics |
description |
We present two galaxy shape catalogues from the Dark Energy Survey Year 1 data set, covering 1500 deg2 with a median redshift of 0.59. The catalogues cover two main fields: Stripe 82, and an area overlapping the South Pole Telescope survey region. We describe our data analysis process and in particular our shape measurement using two independent shear measurement pipelines, METACALIBRATION and IM3SHAPE. The METACALIBRATION catalogue uses a Gaussian model with an innovative internal calibration scheme, and was applied to riz bands, yielding 34.8M objects. The IM3SHAPE catalogue uses a maximum-likelihood bulge/disc model calibrated using simulations, and was applied to r-band data, yielding 21.9M objects. Both catalogues pass a suite of null tests that demonstrate their fitness for use in weak lensing science. We estimate the 1σ uncertainties in multiplicative shear calibration to be 0.013 and 0.025 for the METACALIBRATION and IM3SHAPE catalogues, respectively. |
format |
Article in Journal/Newspaper |
author |
Desai, Shantanu Zuntz, J Sheldon, E |
author_facet |
Desai, Shantanu Zuntz, J Sheldon, E |
author_sort |
Desai, Shantanu |
title |
Dark Energy Survey Year 1 results: weak lensing shape catalogues |
title_short |
Dark Energy Survey Year 1 results: weak lensing shape catalogues |
title_full |
Dark Energy Survey Year 1 results: weak lensing shape catalogues |
title_fullStr |
Dark Energy Survey Year 1 results: weak lensing shape catalogues |
title_full_unstemmed |
Dark Energy Survey Year 1 results: weak lensing shape catalogues |
title_sort |
dark energy survey year 1 results: weak lensing shape catalogues |
publisher |
Oxford University Press (OUP) |
publishDate |
2018 |
url |
http://raiith.iith.ac.in/6662/ https://doi.org/10.1093/mnras/sty2219 |
long_lat |
ENVELOPE(9.914,9.914,63.019,63.019) |
geographic |
South Pole Stripe |
geographic_facet |
South Pole Stripe |
genre |
South pole |
genre_facet |
South pole |
op_relation |
Desai, Shantanu and Zuntz, J and Sheldon, E and et al, . (2018) Dark Energy Survey Year 1 results: weak lensing shape catalogues. Monthly Notices of the Royal Astronomical Society, 481 (1). pp. 1149-1182. ISSN 0035-8711 |
op_doi |
https://doi.org/10.1093/mnras/sty2219 |
container_title |
Monthly Notices of the Royal Astronomical Society |
container_volume |
481 |
container_issue |
1 |
container_start_page |
1149 |
op_container_end_page |
1182 |
_version_ |
1766201843189284864 |