Gas thermodynamics meets galaxy kinematics: Joint mass measurements for eROSITA galaxy clusters

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Table 1.

Properties of the 22 selected clusters.

1eRASS Cluster	z_spec	RA_BCG	Dec_BCG	RA_{X − ray}	Dec_{X − ray}	N_spec	N_eff	R_500, wl	M_500, wl	M_500, hydro
		(deg.)	(deg.)	(deg.)	(deg.)			(kpc)	(10¹³ M_⊙)	(10¹³ M_⊙)
J004049.8-440743	0.3493	10.2082	−44.1307	10.2077	−44.1298	51	43.1	1250 $_{- 35}^{+ 40}$ $^{+40}_{-35}$	79.9 $_{- 6.6}^{+ 8.0}$ $^{+8.0}_{-6.6}$	26.9 $_{- 12.8}^{+ 38.9}$ $^{+38.9}_{-12.8}$
J004207.1-283154	0.1075	10.5370	−28.5357	10.5328	−28.5334	45	39.4	1258 $_{- 28}^{+ 37}$ $^{+37}_{-28}$	62.6 $_{- 4.1}^{+ 5.7}$ $^{+5.7}_{-4.1}$	28.6 $_{- 9.0}^{+ 18.9}$ $^{+18.9}_{-9.0}$
J024339.2-483339	0.4983	40.9121	−48.5608	40.9115	−48.5612	33	26.6	1248 $_{- 28}^{+ 38}$ $^{+38}_{-28}$	94.7 $_{- 6.4}^{+ 8.9}$ $^{+8.9}_{-6.4}$	31.8 $_{- 14.3}^{+ 37.1}$ $^{+37.1}_{-14.3}$
J034656.2-543854	0.5286	56.7311	−54.6486	56.7329	−54.6475	45	37.3	1048 $_{- 35}^{+ 37}$ $^{+37}_{-35}$	58.1 $_{- 5.7}^{+ 6.4}$ $^{+6.4}_{-5.7}$	24.5 $_{- 12.3}^{+ 30.5}$ $^{+30.5}_{-12.3}$
J043817.8-541917	0.4218	69.5737	−54.3223	69.5736	−54.3218	55	48.8	1292 $_{- 28}^{+ 38}$ $^{+38}_{-28}$	95.9 $_{- 6.0}^{+ 8.9}$ $^{+8.9}_{-6.0}$	85.6 $_{- 32.2}^{+ 51.5}$ $^{+51.5}_{-32.2}$
J052806.2-525951	0.7681	82.0222	−52.9981	82.0220	−52.9973	33	25.0	752 $_{- 61}^{+ 50}$ $^{+50}_{-61}$	28.6 $_{- 6.4}^{+ 6.0}$ $^{+6.0}_{-6.4}$	16.1 $_{- 9.7}^{+ 35.0}$ $^{+35.0}_{-9.7}$
J055942.9-524851	0.6087	89.9301	−52.8242	89.9285	−52.8224	42	33.6	984 $_{- 68}^{+ 52}$ $^{+52}_{-68}$	52.8 $_{- 10.2}^{+ 8.9}$ $^{+8.9}_{-10.2}$	30.1 $_{- 17.6}^{+ 44.1}$ $^{+44.1}_{-17.6}$
J073220.0+313748	0.1705	113.0846	31.6335	113.0828	31.6301	78	62.4	1358 $_{- 32}^{+ 37}$ $^{+37}_{-32}$	84.2 $_{- 5.8}^{+ 7.1}$ $^{+7.1}_{-5.8}$	15.3 $_{- 3.7}^{+ 8.3}$ $^{+8.3}_{-3.7}$
J073721.1+351739	0.2094	114.3372	35.2949	114.3365	35.2947	56	47.5	1297 $_{- 37}^{+ 44}$ $^{+44}_{-37}$	76.5 $_{- 6.4}^{+ 8.0}$ $^{+8.0}_{-6.4}$	33.4 $_{- 16.0}^{+ 39.6}$ $^{+39.6}_{-16.0}$
J080056.9+360324	0.2866	120.2367	36.0565	120.2375	36.0577	97	80.4	1360 $_{- 33}^{+ 39}$ $^{+39}_{-33}$	96.0 $_{- 6.8}^{+ 8.3}$ $^{+8.3}_{-6.8}$	62.9 $_{- 33.6}^{+ 70.9}$ $^{+70.9}_{-33.6}$
J082317.9+155700	0.1529	125.8304	15.9627	125.8297	15.9578	66	57.9	991 $_{- 38}^{+ 43}$ $^{+43}_{-38}$	32.2 $_{- 3.6}^{+ 4.4}$ $^{+4.4}_{-3.6}$	15.2 $_{- 9.4}^{+ 30.3}$ $^{+30.3}_{-9.4}$
J084257.5+362208	0.2818	130.7399	36.3665	130.7412	36.3663	125	107.6	1481 $_{- 31}^{+ 36}$ $^{+36}_{-31}$	123.1 $_{- 7.6}^{+ 9.4}$ $^{+9.4}_{-7.6}$	107.3 $_{- 47.1}^{+ 69.7}$ $^{+69.7}_{-47.1}$
J090131.5+030055	0.1936	135.3795	3.0157	135.3786	3.0149	51	41.8	1091 $_{- 38}^{+ 39}$ $^{+39}_{-38}$	44.8 $_{- 4.5}^{+ 4.9}$ $^{+4.9}_{-4.5}$	30.9 $_{- 9.7}^{+ 20.5}$ $^{+20.5}_{-9.7}$
J101703.2+390250	0.2048	154.2652	39.0471	154.2645	39.0487	77	63.2	1373 $_{- 38}^{+ 30}$ $^{+30}_{-38}$	90.2 $_{- 7.3}^{+ 6.1}$ $^{+6.1}_{-7.3}$	15.5 $_{- 3.9}^{+ 5.8}$ $^{+5.8}_{-3.9}$
J115518.0+232422	0.1422	178.8250	23.4049	178.8257	23.4057	59	54.6	1422 $_{- 28}^{+ 33}$ $^{+33}_{-28}$	93.9 $_{- 5.4}^{+ 6.7}$ $^{+6.7}_{-5.4}$	48.7 $_{- 17.7}^{+ 35.1}$ $^{+35.1}_{-17.7}$
J121741.6+033931	0.0773	184.4214	3.6559	184.4221	3.6578	61	56.8	1252 $_{- 22}^{+ 33}$ $^{+33}_{-22}$	60.1 $_{- 3.0}^{+ 4.9}$ $^{+4.9}_{-3.0}$	37.5 $_{- 8.9}^{+ 15.9}$ $^{+15.9}_{-8.9}$
J125922.4-041138	0.0843	194.8438	−4.1961	194.8441	−4.1944	61	55.5	1323 $_{- 32}^{+ 31}$ $^{+31}_{-32}$	71.4 $_{- 5.1}^{+ 5.2}$ $^{+5.2}_{-5.1}$	49.5 $_{- 15.7}^{+ 27.7}$ $^{+27.7}_{-15.7}$
J130252.8-023059	0.0838	195.7191	−2.5164	195.7180	−2.5165	58	51.2	1014 $_{- 26}^{+ 23}$ $^{+23}_{-26}$	32.1 $_{- 2.3}^{+ 2.3}$ $^{+2.3}_{-2.3}$	14.1 $_{- 5.1}^{+ 24.9}$ $^{+24.9}_{-5.1}$
J213056.8-645842	0.3163	322.7342	−64.9779	322.7398	−64.9789	37	31.3	1079 $_{- 39}^{+ 56}$ $^{+56}_{-39}$	49.5 $_{- 5.1}^{+ 8.2}$ $^{+8.2}_{-5.1}$	32.2 $_{- 18.4}^{+ 42.3}$ $^{+42.3}_{-18.4}$
J213536.8-572622	0.4268	323.9060	−57.4419	323.9046	−57.4404	29	27.5	1021 $_{- 65}^{+ 66}$ $^{+66}_{-65}$	47.7 $_{- 8.6}^{+ 9.8}$ $^{+9.8}_{-8.6}$	15.9 $_{- 8.9}^{+ 33.9}$ $^{+33.9}_{-8.9}$
J213800.9-600758	0.3188	324.5035	−60.1317	324.5031	−60.1333	28	26.5	1320 $_{- 48}^{+ 34}$ $^{+34}_{-48}$	91.0 $_{- 9.6}^{+ 7.2}$ $^{+7.2}_{-9.6}$	34.3 $_{- 17.8}^{+ 55.7}$ $^{+55.7}_{-17.8}$
J235137.0-545253	0.3838	357.9086	−54.8817	357.9078	−54.8830	29	26.5	1032 $_{- 57}^{+ 66}$ $^{+66}_{-57}$	46.8 $_{- 7.4}^{+ 9.5}$ $^{+9.5}_{-7.4}$	20.5 $_{- 12.1}^{+ 40.9}$ $^{+40.9}_{-12.1}$

Notes. The sample was selected from Bulbul et al. (2024). The weighted spectroscopic redshift, z_spec, the coordinates of BCGs (RA_BCG, Dec_BCG), and best-fit X-ray centers (RA_{X − ray}, Dec_{X − ray}) are from Kluge et al. (2024) and Bulbul et al. (2024), respectively. N_spec is the number of available spectroscopic member galaxies, while N_eff is the corresponding effective number of galaxy spectra, taking into account membership probabilities. The cluster radius, R_500, wl, and total mass, M_500, wl, were derived from scaling relations, presented in Ghirardini et al. (2024). M_500, hydro is the hydrostatic mass derived in this paper.

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