2021MNRAS.506.6063H

Query : 2021MNRAS.506.6063H

2021MNRAS.506.6063H - Mon. Not. R. Astron. Soc., 506, 6063-6080 (2021/October-1)

Optically detected galaxy cluster candidates in the AKARI North Ecliptic Pole field based on photometric redshift from the Subaru Hyper Suprime-Cam.

HUANG T.-C., MATSUHARA H., GOTO T., SANTOS D.J.D., HO S.C.-C., KIM S.J., HASHIMOTO T., IKEDA H., OI N., MALKAN M.A., PEARSON W.J., POLLO A., SERJEANT S., SHIM H., MIYAJI T., HWANG H.S., DURKALEC A., POLISZCZUK A., GREVE T.R., PEARSON C., TOBA Y., LEE D., KIM H.K., TOFT S., JEONG W.-S. and ENOKIDANI U.

Abstract (from CDS):

Galaxy clusters provide an excellent probe in various research fields in astrophysics and cosmology. However, the number of galaxy clusters detected so far in the AKARI North Ecliptic Pole (NEP) field is limited. In this work, we provide galaxy cluster candidates in the AKARI NEP field with the minimum requisites based only on the coordinates and photometric redshift (photo-z) of galaxies. We used galaxies detected in five optical bands (g, r, i, z, and Y) by the Subaru Hyper Suprime-Cam (HSC), with additional data from the u band obtained from the Canada-France-Hawaii Telescope (CFHT) MegaPrime/MegaCam, and from the IRAC1 and IRAC2 bands from the Spitzer space telescope for photo-z estimation. We calculated the local density around every galaxy using the 10th-nearest neighbourhood. Cluster candidates were determined by applying the friends-of-friends algorithm to over-densities. A total of 88 cluster candidates containing 4390 member galaxies below redshift 1.1 in 5.4 deg2 were identified. The reliability of our method was examined through false-detection tests, redshift-uncertainty tests, and applications on the Cosmic Evolution Survey (COSMOS) data, giving false-detection rates of 0.01 to 0.05 and a recovery rate of 0.9 at high richness. Three X-ray clusters previously observed by ROSAT and Chandra were recovered. The cluster galaxies show a higher stellar mass and lower star formation rate compared with the field galaxies in two-sample Z-tests. These cluster candidates are useful for environmental studies of galaxy evolution and future astronomical surveys in the NEP, where AKARI has performed unique nine-band mid-infrared photometry for tens of thousands of galaxies.

Abstract Copyright: © 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): methods: data analysis - galaxies: clusters: general - galaxies: distance and redshifts - galaxies: evolution - galaxies: groups: general

Status at CDS : All or part of tables of objects could be ingested in SIMBAD with priority 2.

Simbad objects: 10

goto Full paper

goto View the references in ADS

Number of rows : 10
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NAME COSMOS Field reg 10 00 28.60 +02 12 21.0           ~ 3639 0
2 1RXS J175130.9+671920 ClG 17 51 30.9 +67 19 20           ~ 3 0
3 1RXS J175445.8+662353 ClG 17 54 45.7 +66 23 53           ~ 7 0
4 EQ J175511+663354 ClG 17 55 11 +66 33.9           ~ 1 0
5 MCXC J1757.3+6631 ClG 17 57 19.8 +66 31 39           ~ 28 0
6 [BGF2006] NEP 310 ClG 17 58 57.6 +65 20 58           ~ 8 0
7 NAME NEP reg 18 00 00.000 +66 33 38.55           ~ 430 0
8 1RXS J180415.7+672921 ClG 18 04 15.6 +67 29 21           ~ 7 0
9 ClG J1806+6537 ClG 18 06 51.701 +65 37 46.99           ~ 4 0
10 1RXS J180843.6+655705 ClG 18 08 43.6 +65 57 05           ~ 8 0

To bookmark this query, right click on this link: simbad:objects in 2021MNRAS.506.6063H and select 'bookmark this link' or equivalent in the popup menu