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Survey of gravitationally lensed objects in HSC imaging (SuGOHI) – X. Strong lens finding in the HSC-SSP using convolutional neural networks

Journal Article · · Monthly Notices of the Royal Astronomical Society
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ABSTRACT

We apply a novel model based on convolutional neural networks (CNN) to identify gravitationally lensed galaxies in multiband imaging of the Hyper Suprime-Cam Subaru Strategic Program (HSC-SSP) Survey. The trained model is applied to a parent sample of 2350 061 galaxies selected from the $$\sim$$ 800 deg$^2$ Wide area of the HSC-SSP Public Data Release 2. The galaxies in HSC Wide are selected based on stringent pre-selection criteria, such as multiband magnitudes, stellar mass, star formation rate, extendedness limit, photometric redshift range, etc. The trained CNN assigns a score from 0 to 1, with 1 representing lenses and 0 representing non-lenses. Initially, the CNN selects a total of 20 241 cutouts with a score greater than 0.9, but this number is subsequently reduced to 1522 cutouts after removing definite non-lenses for further visual inspection. We discover 43 grade A (definite) and 269 grade B (probable) strong lens candidates, of which 97 are completely new. In addition, we also discover 880 grade C (possible) lens candidates, 289 of which are known systems in the literature. We identify 143 candidates from the known systems of grade C that had higher confidence in previous searches. Our model can also recover 285 candidate galaxy-scale lenses from the Survey of Gravitationally lensed Objects in HSC Imaging (SuGOHI), where a single foreground galaxy acts as the deflector. Even though group-scale and cluster-scale lens systems are not included in the training, a sample of 32 SuGOHI-c (i.e. group/cluster-scale systems) lens candidates is retrieved. Our discoveries will be useful for ongoing and planned spectroscopic surveys, such as the Subaru Prime Focus Spectrograph project, to measure lens and source redshifts in order to enable detailed lens modelling.

Sponsoring Organization:
USDOE
OSTI ID:
2477070
Journal Information:
Monthly Notices of the Royal Astronomical Society, Journal Name: Monthly Notices of the Royal Astronomical Society Journal Issue: 2 Vol. 535; ISSN 0035-8711
Publisher:
Oxford University PressCopyright Statement
Country of Publication:
United Kingdom
Language:
English

References (77)

Gravitational detection of a low-mass dark satellite galaxy at cosmological distance journal January 2012
A new window of exploration in the mass spectrum: strong lensing by galaxy groups in the SL2S journal June 2009
Astropy: A community Python package for astronomy journal September 2013
The strong gravitational lens finding challenge journal May 2019
Survey of gravitationally-lensed objects in HSC imaging (SuGOHI): III. Statistical strong lensing constraints on the stellar IMF of CMASS galaxies journal September 2019
Survey of Gravitationally lensed Objects in HSC Imaging (SuGOHI): IV. Lensed quasar search in the HSC survey journal April 2020
Survey of Gravitationally-lensed Objects in HSC Imaging (SuGOHI): VI. Crowdsourced lens finding with Space Warps journal October 2020
HOLISMOKES: II. Identifying galaxy-scale strong gravitational lenses in Pan-STARRS using convolutional neural networks journal December 2020
TDCOSMO: IV. Hierarchical time-delay cosmography – joint inference of the Hubble constant and galaxy density profiles journal November 2020
HOLISMOKES: VI. New galaxy-scale strong lens candidates from the HSC-SSP imaging survey journal September 2021
Holismokes journal May 2022
The CFHTLS strong lensing legacy survey: I. Survey overview and T0002 release sample journal October 2006
Early-Type Galaxies in the Sloan Digital Sky Survey. III. The Fundamental Plane journal April 2003
Mass‐to‐Light Ratios of Galaxy Groups from Weak Lensing journal December 2005
The Sloan Lens ACS Survey. III. The Structure and Formation of Early‐Type Galaxies and Their Evolution since z ≈ 1 journal October 2006
First Catalog of Strong Lens Candidates in the COSMOS Field journal May 2008
On the Contribution of Large-Scale Structure to Strong Gravitational Lensing journal April 2009
The Sloan lens acs Survey. x. Stellar, Dynamical, and Total mass Correlations of Massive Early-Type Galaxies journal November 2010
The boss Emission-Line lens Survey (Bells). i. a Large Spectroscopically Selected Sample of lens Galaxies at Redshift ∼0.5 journal December 2011
The Cfhtls-Strong Lensing Legacy Survey (Sl2s): Investigating the Group-Scale Lenses with the Sarcs Sample journal March 2012
The Density Profiles of Massive, Relaxed Galaxy Clusters. ii. Separating Luminous and dark Matter in Cluster Cores journal February 2013
Ringfinder: Automated Detection of Galaxy-Scale Gravitational Lenses in Ground-Based Multi-Filter Imaging data journal April 2014
The sl2s Galaxy-Scale lens Sample. v. dark Matter Halos and Stellar imf of Massive Early-Type Galaxies out to Redshift 0.8 journal February 2015
Photometric Redshift with Bayesian Priors on Physical Properties of Galaxies journal February 2015
Chitah: STRONG-GRAVITATIONAL-LENS HUNTER IN IMAGING SURVEYS journal July 2015
On the Possibility of Determining Hubble's Parameter and the Masses of Galaxies from the Gravitational Lens Effect journal September 1964
Survey of Gravitationally lensed Objects in HSC Imaging (SuGOHI) – V. Group-to-cluster scale lens search from the HSC–SSP Survey journal April 2020
Spin parity of spiral galaxies II: a catalogue of 80 k spiral galaxies using big data from the Subaru Hyper Suprime-Cam survey and deep learning journal July 2020
Discovery of an unusually compact lensed Lyman-break galaxy from the Hyper Suprime-Cam Survey journal February 2020
Survey of Gravitationally Lensed Objects in HSC Imaging (SuGOHI) – VII. Discovery and confirmation of three strongly lensed quasars† journal January 2021
Galaxy cluster cores as seen with VLT/MUSE: New strong-lensing analyses of RX J2129.4 + 0009, MS 0451.6 − 0305, and MACS J2129.4 − 0741 journal August 2021
Dark matter haloes of massive elliptical galaxies at z ∼ 0.2 are well described by the Navarro–Frenk–White profile journal February 2021
The impact of human expert visual inspection on the discovery of strong gravitational lenses journal June 2023
Joint HST, VLT/MUSE, and XMM−Newton observations to constrain the mass distribution of the two strong lensing galaxy clusters: MACS J0242.5-2132 and MACS J0949.8+1708 journal March 2023
Systematic comparison of neural networks used in discovering strong gravitational lenses journal June 2024
CFHTLenS: the Canada–France–Hawaii Telescope Lensing Survey – imaging data and catalogue products journal June 2013
Space Warps– II. New gravitational lens candidates from the CFHTLS discovered through citizen science journal November 2015
Space Warps – I. Crowdsourcing the discovery of gravitational lenses journal November 2015
ALMA imprint of intergalactic dark structures in the gravitational lens SDP.81 journal February 2016
A new quadruple gravitational lens from the Hyper Suprime-Cam Survey: the puzzle of HSC J115252+004733 journal November 2016
Probing dark matter substructure in the gravitational lens HE 0435−1223 with the WFC3 grism journal June 2017
Finding strong lenses in CFHTLS using convolutional neural networks journal June 2017
LinKS: discovering galaxy-scale strong lenses in the Kilo-Degree Survey using convolutional neural networks journal January 2019
H0LiCOW – XIII. A 2.4 per cent measurement of H0 from lensed quasars: 5.3σ tension between early- and late-Universe probes journal September 2019
SHARP – VII. New constraints on the dark matter free-streaming properties and substructure abundance from gravitationally lensed quasars journal November 2019
Warm dark matter chills out: constraints on the halo mass function and the free-streaming length of dark matter with eight quadruple-image strong gravitational lenses journal December 2019
The bright-star masks for the HSC-SSP survey journal July 2017
Survey of Gravitationally-lensed Objects in HSC Imaging (SuGOHI). I. Automatic search for galaxy-scale strong lenses journal September 2017
Hyper Suprime-Cam: System design and verification of image quality journal September 2017
Hyper Suprime-Cam: Camera dewar design journal September 2017
Photometric redshifts for Hyper Suprime-Cam Subaru Strategic Program Data Release 1 journal October 2017
The on-site quality-assurance system for Hyper Suprime-Cam: OSQAH† journal September 2017
The Hyper Suprime-Cam software pipeline journal October 2017
Characterization and photometric performance of the Hyper Suprime-Cam Software Pipeline journal December 2017
Hyper Suprime-Cam: Filters journal June 2018
Second data release of the Hyper Suprime-Cam Subaru Strategic Program journal October 2019
Gradient-based learning applied to document recognition journal January 1998
Detection of a dark substructure through gravitational imaging: Detection of a dark substructure journal October 2010
Combined strong and weak lensing analysis of 28 clusters from the Sloan Giant Arcs Survey★: Combined strong and weak lensing analysis of 28 clusters journal January 2012
CFHTLenS: improving the quality of photometric redshifts with precision photometry★: CFHTLenS: photometric redshifts journal February 2012
THE COMPOSITE SPECTRUM OF BOSS QUASARS SELECTED FOR STUDIES OF THE Ly α FOREST journal May 2016
Detection of Lensing Substructure Using alma Observations of the Dusty Galaxy Sdp.81 journal May 2016
THE BOSS EMISSION-LINE LENS SURVEY. III. STRONG LENSING OF Ly α EMITTERS BY INDIVIDUAL GALAXIES journal June 2016
The Astropy Project: Building an Open-science Project and Status of the v2.0 Core Package journal August 2018
Survey of Gravitationally Lensed Objects in HSC Imaging (SuGOHI). II. Environments and Line-of-Sight Structure of Strong Gravitational Lens Galaxies to z ∼ 0.8 journal November 2018
Finding Strong Gravitational Lenses in the DESI DECam Legacy Survey journal May 2020
New High-quality Strong Lens Candidates with Deep Learning in the Kilo-Degree Survey journal August 2020
Discovering New Strong Gravitational Lenses in the DESI Legacy Imaging Surveys journal March 2021
High-quality Strong Lens Candidates in the Final Kilo-Degree Survey Footprint journal December 2021
Identification of Galaxy–Galaxy Strong Lens Candidates in the DECam Local Volume Exploration Survey Using Machine Learning journal August 2023
ALMA Measurement of 10 kpc Scale Lensing-power Spectra toward the Lensed Quasar MG J0414+0534 journal September 2023
An Extended Catalog of Galaxy–Galaxy Strong Gravitational Lenses Discovered in DES Using Convolutional Neural Networks journal July 2019
The 16th Data Release of the Sloan Digital Sky Surveys: First Release from the APOGEE-2 Southern Survey and Full Release of eBOSS Spectra journal June 2020
Discovery of a Very Bright and Intrinsically Very Luminous, Strongly Lensed Ly α Emitting Galaxy at z = 2.82 in the BOSS Emission-Line Lens Survey journal January 2017
Adam: A Method for Stochastic Optimization preprint January 2014
TensorFlow: Large-Scale Machine Learning on Heterogeneous Distributed Systems preprint January 2016
Computational Methods for Gravitational Lensing preprint January 2001

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