J/PASJ/74/1209 SuGOHI VIII. Lens candidates (Wong+, 2022)
Survey of Gravitationally lensed objects in HSC Imaging (SuGOHI).
VIII. New galaxy-scale lenses from the HSC SSP.
Wong K.C., Chan J.H.H., Chao D.C.-Y., Jaelani A.T., Kayo I., Lee C.-H.,
More A., Oguri M.
<Publ. Astron. Soc. Jap., 74, 1209-1219 (2022)>
=2022PASJ...74.1209W 2022PASJ...74.1209W (SIMBAD/NED BibCode)
ADC_Keywords: Gravitational lensing ; Redshifts ; Optical
Keywords: cosmology: observations - galaxies: general -
gravitational lensing: strong
Abstract:
We conduct a search for galaxy-scale strong gravitational lens systems
in Data Release 4 of the Hyper Suprime-Cam Subaru Strategic Program
(HSC SSP), consisting of data taken up to the S21A semester. We select
103191 luminous red galaxies from the Baryon Oscillation Spectroscopic
Survey (BOSS) sample that have deep multiband imaging from the HSC SSP
and use the YATTALENS algorithm to identify lens candidates with blue
arc-like features automatically. The candidates are visually inspected
and graded based on their likelihood of being a lens. We find eight
definite lenses, 28 probable lenses, and 138 possible lenses. The new
lens candidates generally have lens redshifts in the range
0.3≲zL≲0.9, a key intermediate redshift range to study the
evolution of galaxy structure. Follow-up spectroscopy will confirm
these new lenses and measure source redshifts to enable detailed lens
modeling.
Description:
As part of the SuGOHI project, we have conducted a search for
galaxy-scale strong gravitational lenses in DR4 of the HSC SSP
(covering 1310 deg2 in the grizy bands) using the lens-finding
algorithm YattaLens. We run the search on 103191 LRGs with
spectroscopy from BOSS DR15 and visually inspect and grade the
candidates identified by YattaLens as potential lenses. We find eight
definite (grade A) lenses, 28 probable (grade B) lenses, and 138
possible (grade C) lenses. We cross-check with recent lens searches in
the literature. The lens candidates have lens redshifts primarily in
the range 0.3≲zL≲0.9, consistent with previous lenses found as part
of SuGOHI-g. This intermediate redshift range makes this sample
valuable for future studies of the evolution of galaxy structure from
z∼1 to the present epoch. Follow-up spectroscopy will confirm
these lenses and measure source redshifts to enable science results
from detailed lens modeling.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 63 36 Grade A and B lens candidates
table2.dat 43 138 Grade C lens candidates
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See also:
J/ApJ/867/107 : SuGOHI II. Lenses from HSC SSP DR2 + environment (Wong+, 2018)
J/A+A/642/A148 : SuGOHI VI. List up to 2020 (Sonnenfeld+, 2020)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 18 A18 --- Name Name (HSC JHHMMSS+DDMMSS)
20- 27 F8.4 deg RAdeg Right ascension (J2000.0)
29- 35 F7.4 deg DEdeg Declination (J2000.0)
38- 43 F6.4 --- zL Lens redshift from SDSS DR15
46- 51 F6.4 --- zS ?=- Redshift from other references
52 A1 --- r_zS [+ds] References for zS (1)
54 A1 --- Grade [AB] Grade
57- 63 A7 --- Refs Recent publications that also identified
these systems as lens candidates (2)
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Note (1): Redshift references as follows:
+ = Cao et al. (2020MNRAS.499.3610C 2020MNRAS.499.3610C).
d = Talbot et al. (2021MNRAS.502.4617T 2021MNRAS.502.4617T).
s = Drinkwater et al. (2018MNRAS.474.4151D 2018MNRAS.474.4151D, Cat. J/MNRAS/474/4151)
Note (2): References as follows:
1 = Jacobs et al. (2019ApJS..243...17J 2019ApJS..243...17J, Cat. J/ApJS/243/17)
2 = Petrillo et al. (2019MNRAS.484.3879P 2019MNRAS.484.3879P, Cat. J/MNRAS/484/3879)
3 = Cao et al. (2020MNRAS.499.3610C 2020MNRAS.499.3610C)
4 = Talbot et al. (2021MNRAS.502.4617T 2021MNRAS.502.4617T)
5 = Li et al. (2020ApJ...899...30L 2020ApJ...899...30L)
6 = Li et al. (2021ApJ...923...16L 2021ApJ...923...16L)
7 = Huang et al. (2021ApJ...909...27H 2021ApJ...909...27H, Cat. J/ApJ/909/27)
8 = Stein et al. (2022ApJ...932..107S 2022ApJ...932..107S)
9 = Canameras et al. (2021A&A...653L...6C 2021A&A...653L...6C, Cat. J/A+A/653/L6)
10 = A. T. Jaelani et al. (in preparation)
11 = Shu et al. (2022A&A...662A...4S 2022A&A...662A...4S, Cat. J/A+A/662/A4)
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 18 A18 --- Name Name (HSC JHHMMSS+DDMMSS)
20- 27 F8.4 deg RAdeg Right ascension (J2000.0)
29- 35 F7.4 deg DEdeg Declination (J2000.0)
38- 43 F6.4 --- zL Lens redshift from SDSS DR15
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History:
From electronic version of the journal
References:
Sonnenfeld et al., Paper I 2018PASJ...70S..29S 2018PASJ...70S..29S
Wong et al., Paper II 2018ApJ...867..107W 2018ApJ...867..107W, Cat. J/ApJ/867/107
Sonnenfeld et al., Paper III 2019A&A...630A..71S 2019A&A...630A..71S
Chan et al., Paper IV 2020A&A...636A..87C 2020A&A...636A..87C
Jaelani et al., Paper V 2020MNRAS.495.1291J 2020MNRAS.495.1291J
Sonnenfeld et al., Paper VI 2020A&A...642A.148S 2020A&A...642A.148S, Cat. J/A+A/642/A148
Jaelani et al., Paper VII 2021MNRAS.502.1487J 2021MNRAS.502.1487J
(End) Patricia Vannier [CDS] 03-Apr-2023