Hundreds of weak lensing shear-selected clusters from the Hyper Suprime-Cam Subaru Strategic Program S19A data
Abstract
Abstract We use the Hyper Suprime-Cam Subaru Strategic Program S19A shape catalog to construct weak lensing shear-selected cluster samples. From aperture mass maps covering ∼510 deg2 created using a truncated Gaussian filter, we construct a catalog of 187 shear-selected clusters that correspond to mass map peaks with signal-to-noise ratio larger than 4.7. Most of the shear-selected clusters have counterparts in optically selected clusters, from which we estimate the purity of the catalog to be higher than 95%. The sample can be expanded to 418 shear-selected clusters with the same signal-to-noise ratio cut by optimizing the shape of the filter function and by combining weak lensing mass maps created with several different background galaxy selections. We argue that dilution and obscuration effects of cluster member galaxies can be mitigated by using background source galaxy samples and adopting a filter function with its inner boundary larger than about 2′. The large samples of shear-selected clusters that are selected without relying on any baryonic tracer are useful for detailed studies of cluster astrophysics and cosmology.
- Authors:
- Publication Date:
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1784397
- Resource Type:
- Published Article
- Journal Name:
- Publications of the Astronomical Society of Japan
- Additional Journal Information:
- Journal Name: Publications of the Astronomical Society of Japan Journal Volume: 73 Journal Issue: 4; Journal ID: ISSN 0004-6264
- Publisher:
- Oxford University Press
- Country of Publication:
- Japan
- Language:
- English
Citation Formats
Oguri, Masamune, Miyazaki, Satoshi, Li, Xiangchong, Luo, Wentao, Mitsuishi, Ikuyuki, Miyatake, Hironao, More, Surhud, Nishizawa, Atsushi J., Okabe, Nobuhiro, Ota, Naomi, Plazas Malagón, Andrés A., and Utsumi, Yousuke. Hundreds of weak lensing shear-selected clusters from the Hyper Suprime-Cam Subaru Strategic Program S19A data. Japan: N. p., 2021.
Web. doi:10.1093/pasj/psab047.
Oguri, Masamune, Miyazaki, Satoshi, Li, Xiangchong, Luo, Wentao, Mitsuishi, Ikuyuki, Miyatake, Hironao, More, Surhud, Nishizawa, Atsushi J., Okabe, Nobuhiro, Ota, Naomi, Plazas Malagón, Andrés A., & Utsumi, Yousuke. Hundreds of weak lensing shear-selected clusters from the Hyper Suprime-Cam Subaru Strategic Program S19A data. Japan. https://doi.org/10.1093/pasj/psab047
Oguri, Masamune, Miyazaki, Satoshi, Li, Xiangchong, Luo, Wentao, Mitsuishi, Ikuyuki, Miyatake, Hironao, More, Surhud, Nishizawa, Atsushi J., Okabe, Nobuhiro, Ota, Naomi, Plazas Malagón, Andrés A., and Utsumi, Yousuke. Sat .
"Hundreds of weak lensing shear-selected clusters from the Hyper Suprime-Cam Subaru Strategic Program S19A data". Japan. https://doi.org/10.1093/pasj/psab047.
@article{osti_1784397,
title = {Hundreds of weak lensing shear-selected clusters from the Hyper Suprime-Cam Subaru Strategic Program S19A data},
author = {Oguri, Masamune and Miyazaki, Satoshi and Li, Xiangchong and Luo, Wentao and Mitsuishi, Ikuyuki and Miyatake, Hironao and More, Surhud and Nishizawa, Atsushi J. and Okabe, Nobuhiro and Ota, Naomi and Plazas Malagón, Andrés A. and Utsumi, Yousuke},
abstractNote = {Abstract We use the Hyper Suprime-Cam Subaru Strategic Program S19A shape catalog to construct weak lensing shear-selected cluster samples. From aperture mass maps covering ∼510 deg2 created using a truncated Gaussian filter, we construct a catalog of 187 shear-selected clusters that correspond to mass map peaks with signal-to-noise ratio larger than 4.7. Most of the shear-selected clusters have counterparts in optically selected clusters, from which we estimate the purity of the catalog to be higher than 95%. The sample can be expanded to 418 shear-selected clusters with the same signal-to-noise ratio cut by optimizing the shape of the filter function and by combining weak lensing mass maps created with several different background galaxy selections. We argue that dilution and obscuration effects of cluster member galaxies can be mitigated by using background source galaxy samples and adopting a filter function with its inner boundary larger than about 2′. The large samples of shear-selected clusters that are selected without relying on any baryonic tracer are useful for detailed studies of cluster astrophysics and cosmology.},
doi = {10.1093/pasj/psab047},
journal = {Publications of the Astronomical Society of Japan},
number = 4,
volume = 73,
place = {Japan},
year = {Sat May 22 00:00:00 EDT 2021},
month = {Sat May 22 00:00:00 EDT 2021}
}
https://doi.org/10.1093/pasj/psab047
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