NIKA2 Cosmological Legacy Survey - Blind detection of galaxy clusters in the COSMOS field via the Sunyaev-Zel’dovich effect

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Volume 700 (August 2025)

A&A, 700 (2025) A30

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Table 1.

Galaxy cluster candidates, sorted by decreasing S/N, with S/N > 4.

Candidate Name	RA	Dec	S/N	z	θ₅₀₀	Y₅₀₀	M₅₀₀	Matching cluster name	Reference(s)
	°	°			arcmin	10⁻⁵ arcmin²	10¹⁴ M_⊙	(distance [″])
NK2-CL J100045.8+020514.3	150.1907	2.0873	5.31	–	$0 . 74_{- 0.20}^{+ 0.40}$ $0.74_{-0.20}^{+0.40}$	$1 . 60_{- 0.56}^{+ 1.45}$ $1.60_{-0.56}^{+1.45}$	–	–	–
NK2-CL J095937.7+022320.4	149.9071	2.3890	5.00	0.74 ± 0.03 (p)	$1 . 38_{- 0.13}^{+ 0.12}$ $1.38_{-0.13}^{+0.12}$	$3 . 35_{- 1.34}^{+ 1.77}$ $3.35_{-1.34}^{+1.77}$	$1 . 51_{- 0.38}^{+ 0.40}$ $1.51_{-0.38}^{+0.40}$	ALH J0959.38+0223.03 (17.8″)	(1)
NK2-CL J100004.7+021604.4	150.0194	2.2679	4.97	–	$0 . 92_{- 0.29}^{+ 0.62}$ $0.92_{-0.29}^{+0.62}$	$1 . 95_{- 0.88}^{+ 2.65}$ $1.95_{-0.88}^{+2.65}$	–	–	–
NK2-CL J100043.6+023232.4	150.1818	2.5423	4.87	–	$0 . 65_{- 0.13}^{+ 0.31}$ $0.65_{-0.13}^{+0.31}$	$1 . 11_{- 0.30}^{+ 0.75}$ $1.11_{-0.30}^{+0.75}$	–	–	–
NK2-CL J100025.3+023346.4	150.1056	2.5629	4.67	0.72 ± 0.02 (p)	$1 . 37_{- 0.14}^{+ 0.12}$ $1.37_{-0.14}^{+0.12}$	$2 . 90_{- 1.24}^{+ 1.57}$ $2.90_{-1.24}^{+1.57}$	$1 . 38_{- 0.37}^{+ 0.38}$ $1.38_{-0.37}^{+0.38}$	[BMH2011] 124 (11.5″)	(2), (3), (4)
NK2-CL J100100.6+022134.4	150.2524	2.3596	4.67	0.77 ± 0.01 (p)	$1 . 36_{- 0.11}^{+ 0.09}$ $1.36_{-0.11}^{+0.09}$	$3 . 47_{- 1.25}^{+ 1.42}$ $3.47_{-1.25}^{+1.42}$	$1 . 56_{- 0.34}^{+ 0.33}$ $1.56_{-0.34}^{+0.33}$	[SCC2012] 0788 (9.1″)	(5)
NK2-CL J100004.4+021148.4	150.0183	2.1968	4.60	0.94 ± 0.05 (s)	$1 . 10_{- 0.10}^{+ 0.09}$ $1.10_{-0.10}^{+0.09}$	$2 . 10_{- 0.78}^{+ 0.91}$ $2.10_{-0.78}^{+0.91}$	$1 . 21_{- 0.27}^{+ 0.27}$ $1.21_{-0.27}^{+0.27}$	[KLI2009] 146* (8.7″)	(3)
NK2-CL J100103.4+022208.4	150.2641	2.3690	4.54	–	$0 . 59_{- 0.09}^{+ 0.23}$ $0.59_{-0.09}^{+0.23}$	$0 . 85_{- 0.20}^{+ 0.35}$ $0.85_{-0.20}^{+0.35}$	–	–	–
NK2-CL J100011.9+021256.5	150.0494	2.2157	4.48	0.24 ± 0.08** (p)	$3 . 79_{- 1.01}^{+ 2.11}$ $3.79_{-1.01}^{+2.11}$	$28 . 20_{- 16.79}^{+ 69.45}$ $28.20_{-16.79}^{+69.45}$	$2 . 83_{- 0.88}^{+ 1.55}$ $2.83_{-0.88}^{+1.55}$	XMMXCS J100012.3+021246.7 (11.7″)	(6)
NK2-CL J100101.1+020146.6	150.2546	2.0296	4.30	–	$0 . 71_{- 0.16}^{+ 0.44}$ $0.71_{-0.16}^{+0.44}$	$0 . 96_{- 0.29}^{+ 0.83}$ $0.96_{-0.29}^{+0.83}$	–	–	–
NK2-CL J100054.3+020126.4	150.2262	2.0240	4.28	1.42 ± 0.01 (p)	$0 . 81_{- 0.06}^{+ 0.05}$ $0.81_{-0.06}^{+0.05}$	$1 . 56_{- 0.53}^{+ 0.62}$ $1.56_{-0.53}^{+0.62}$	$1 . 00_{- 0.21}^{+ 0.21}$ $1.00_{-0.21}^{+0.21}$	[SCC2012] 1517 (16.0″)	(5)
NK2-CL J100009.1+022140.3	150.0378	2.3612	4.27	–	$2 . 56_{- 1.16}^{+ 2.96}$ $2.56_{-1.16}^{+2.96}$	$14 . 30_{- 10.55}^{+ 81.99}$ $14.30_{-10.55}^{+81.99}$	–	–	–
NK2-CL J095942.6+023056.5	149.9277	2.5157	4.08	0.73 ± 0.02 (s)	$1 . 45_{- 0.13}^{+ 0.11}$ $1.45_{-0.13}^{+0.11}$	$4 . 10_{- 1.55}^{+ 1.83}$ $4.10_{-1.55}^{+1.83}$	$1 . 69_{- 0.39}^{+ 0.39}$ $1.69_{-0.39}^{+0.39}$	DESI 2353000051 (12.0″)	(7)
NK2-CL J100120.5+022828.2	150.3353	2.4745	4.07	–	$0 . 71_{- 0.15}^{+ 0.44}$ $0.71_{-0.15}^{+0.44}$	$0 . 93_{- 0.28}^{+ 0.75}$ $0.93_{-0.28}^{+0.75}$	–	–	–
NK2-CL J100008.4+020908.3	150.0350	2.1523	4.04	–	$0 . 77_{- 0.21}^{+ 0.65}$ $0.77_{-0.21}^{+0.65}$	$1 . 20_{- 0.44}^{+ 1.72}$ $1.20_{-0.44}^{+1.72}$	–	–	–
NK2-CL J095958.5+022910.4	149.9938	2.4862	4.01	0.40 ± 0.01 (p)	$2 . 52_{- 0.23}^{+ 0.22}$ $2.52_{-0.23}^{+0.22}$	$12 . 24_{- 4.77}^{+ 6.22}$ $12.24_{-4.77}^{+6.22}$	$2 . 38_{- 0.57}^{+ 0.61}$ $2.38_{-0.57}^{+0.61}$	[SCC2012] 0270 (14,8″)	(5)

Notes. The table is also available at the CDS. The first column gives the name of the candidate. The right ascension (J2000) and declination (J2000) are presented in the second and third columns, respectively. The S/N of each candidate is given in the fourth column. The fifth column lists the candidates’ estimated redshift, z, associated uncertainties and redshift type (photometric (p) or spectroscopic (s)). In the sixth and seventh columns we present the cluster angular size θ₅₀₀ and tSZ flux, Y₅₀₀ (see Sect. 6). For candidates with known redshift, we list their estimated mass M₅₀₀ and uncertainties in the eighth column (see Sect. 6.2). The last column gives the name of the matched counterpart in external catalogs with its distance to the NIKA2 cluster candidate center in arcsec and the reference. A ^* indicates that the object is a group of galaxies. A ^** indicates a possible superposition of a low and a high-redshift cluster (see Sect. 5.2).

References: (1) Ascaso et al. (2015); (2) Bellagamba et al. (2011); (3) Knobel et al. (2009); (4) Iovino et al. (2016); (5) Söchting et al. (2012); (6) Mehrtens et al. (2012); (7) Zou et al. (2021).

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