TY - JOUR
T1 - Groups and Protocluster Candidates in the CLAUDS and HSC-SSP Joint Deep Surveys
AU - Li, Qingyang
AU - Yang, Xiaohu
AU - Liu, Chengze
AU - Jing, Yipeng
AU - He, Min
AU - Huang, Jia Sheng
AU - Dai, Y. Sophia
AU - Sawicki, Marcin
AU - Arnouts, Stephane
AU - Gwyn, Stephen
AU - Moutard, Thibaud
AU - Mo, H. J.
AU - Wang, Kai
AU - Katsianis, Antonios
AU - Cui, Weiguang
AU - Han, Jiaxin
AU - Chiu, I. Non
AU - Gu, Yizhou
AU - Xu, Haojie
N1 - Publisher Copyright:
© 2022. The Author(s). Published by the American Astronomical Society.
PY - 2022/7/1
Y1 - 2022/7/1
N2 - Using the extended halo-based group finder developed by Yang et al., which is able to deal with galaxies via spectroscopic and photometric redshifts simultaneously, we construct galaxy group and candidate protocluster catalogs in a wide redshift range (0 < z < 6) from the joint CFHT Large Area U-band Deep Survey and Hyper Suprime-Cam Subaru Strategic Program deep data set. Based on a selection of 5,607,052 galaxies with i-band magnitude m i < 26 and a sky coverage of 34.41 deg2, we identify a total of 2,232,134 groups, of which 402,947 groups have at least three member galaxies. We have visually checked and discussed the general properties of these richest groups at redshift z > 2.0. By checking the galaxy number distributions within a 5-7 h -1Mpc projected separation and a redshift difference "z ≤ 0.1 around those richest groups at redshift z > 2, we identify lists of 761, 343, and 43 protocluster candidates in the redshift bins 2 ≤ z < 3, 3 ≤ z < 4, and z ≥ 4, respectively. In general, these catalogs of galaxy groups and protocluster candidates will provide useful environmental information in probing galaxy evolution along cosmic time.
AB - Using the extended halo-based group finder developed by Yang et al., which is able to deal with galaxies via spectroscopic and photometric redshifts simultaneously, we construct galaxy group and candidate protocluster catalogs in a wide redshift range (0 < z < 6) from the joint CFHT Large Area U-band Deep Survey and Hyper Suprime-Cam Subaru Strategic Program deep data set. Based on a selection of 5,607,052 galaxies with i-band magnitude m i < 26 and a sky coverage of 34.41 deg2, we identify a total of 2,232,134 groups, of which 402,947 groups have at least three member galaxies. We have visually checked and discussed the general properties of these richest groups at redshift z > 2.0. By checking the galaxy number distributions within a 5-7 h -1Mpc projected separation and a redshift difference "z ≤ 0.1 around those richest groups at redshift z > 2, we identify lists of 761, 343, and 43 protocluster candidates in the redshift bins 2 ≤ z < 3, 3 ≤ z < 4, and z ≥ 4, respectively. In general, these catalogs of galaxy groups and protocluster candidates will provide useful environmental information in probing galaxy evolution along cosmic time.
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U2 - 10.3847/1538-4357/ac6e69
DO - 10.3847/1538-4357/ac6e69
M3 - Article
AN - SCOPUS:85133592757
SN - 0004-637X
VL - 933
JO - Astrophysical Journal
JF - Astrophysical Journal
IS - 1
M1 - 9
ER -