The Arches cluster revisited - I. Data presentation and stellar census

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Table A.1

The stellar population of the Arches cluster.

ID	RA	Dec	m_F127M	m_F139M	m_F153M	m_F205W	#Observations	Spec.	Notes
	(h m s)	(d m s)	(mag)	(mag)	(mag)	(mag)	(#Epochs)	class.
B1	17 45 51.50	–28 49 26.8	–	–	–	–	5(5)	WN8-9h
B4	17 45 50.86	–28 49 19.7	–	–	–	–	15(10)	O5.5-6 Ia
F1	17 45 50.260	–28 49 22.76	15.45	14.21	12.97	10.45	10(9)	WN8-9h	Radio¹
F2	17 45 49.746	–28 49 26.29	16.73	15.29	13.94	11.18	15(14)	WN8-9h	SB2, Radio, X-ray
								O5-6 Ia⁺
F3	17 45 50.884	–28 49 26.89	15.05	13.94	12.81	10.46	5(5)	WN8-9h	Radio
F4	17 45 50.628	–28 49 18.10	14.57	13.56	12.56	10.37	26(10)	WN7-8h	Radio
F5	17 45 50.510	–28 49 32.40	15.68	14.50	13.32	10.86	5(5)	WN8-9h	Radio¹
F6	17 45 50.478	–28 49 22.79	14.60	13.49	12.39	10.37	13(5)	WN8-9h	Radio¹, X-ray
F7	17 45 50.529	–28 49 20.03	14.71	13.63	12.58	10.48	26(10)	WN8-9h	X-ray
F8	17 45 50.447	–28 49 21.75	15.12	14.03	12.91	10.76	8(5)	WN8-9h	Radio
F9	17 45 50.321	–28 49 12.26	14.91	13.85	12.82	10.77	10(10)	WN8-9h	X-ray
F10	17 45 50.121	–28 49 27.01	16.21	14.93	13.74	11.46	5(5)	O7-8 Ia⁺
F12	17 45 50.337	–28 49 17.78	15.35	14.26	13.21	10.99	13(10)^b	WN7-8h
F13	17 45 50.102	–28 49 24.15	16.52	15.28	14.08	11.74	5(5)	O7-8 Ia⁺
F14	17 45 50.735	–28 49 23.08	15.43	14.34	13.31	11.72	12(5)	WN8-9h
F15	17 45 50.811	–28 49 17.09	15.07	14.05	13.07	11.27	20(11)	O6-7 Ia⁺
F16	17 45 50.581	–28 49 21.17	15.55	14.48	13.42	11.40	11(5)	WN8-9h
F17	17 45 50.192	–28 49 27.66	17.03	15.73	14.47	12.15	5(5)	O5-6 Ia⁺
F18	17 45 50.532	–28 49 18.42	15.63	14.59	13.61	11.63	23(10)	O4-5 Ia⁺	Radio
F19	17 45 49.818	–28 49 26.48	17.92	16.53	15.18	12.60	14(13)	O4-5 Ia	Radio
F20	17 45 50.481	–28 49 20.18	16.53	15.41	14.38	12.16	20(10)	O4-5 Ia
F21	17 45 50.820	–28 49 20.11	15.72	14.67	13.68	11.77	22(10)	O6-6.5 Ia
F22	17 45 50.278	–28 49 17.21	16.42	15.26	14.16	12.02	9(9)^a	O5.5-6 Ia
F23	17 45 51.211	–28 49 23.84	16.38	15.27	14.21	12.19	1(1)	O6-6.5 Ia
F24	17 45 50.152	–28 49 21.21	17.29	16.06	14.88	12.61	6(6)^c	O4-5 Ia
F25	17 45 50.012	–28 49 27.06	18.35	16.93	15.57	13.05	9(9)^b	O4-5 Ia
F26	17 45 50.610	–28 49 24.03	16.61	15.46	14.37	12.34	8(5)	O4-5 Ia
F27	17 45 50.664	–28 49 20.02	16.09	15.01	13.97	12.01	29(10)	O4-5 Ia⁺
F28	17 45 50.699	–28 49 22.21	16.17	15.07	14.06	12.17	13(5)	O4-5 Ia
F29	17 45 50.799	–28 49 18.14	16.14	15.10	14.10	12.26	22(11)	O5.5-6 Ia
F30	17 45 50.275	–28 49 19.10	16.75	15.63	14.56	12.53	10(8)^c	O4-5 Ia
F31	17 45 50.478	–28 49 20.16	–	–	–	12.41	–	–
F32	17 45 50.681	–28 49 20.35	16.46	15.41	14.37	12.42	13(5)	O4-5 Ia
F33	17 45 50.723	–28 49 20.40	16.38	15.32	14.32	12.42	13(5)	O4-5 Ia
F34	17 45 50.863	–28 49 21.54	16.54	15.48	14.44	12.49	6(5)^b	O4-5 Ia
F35	17 45 50.755	–28 49 17.50	16.17	15.15	14.18	12.37	20(11)	O4-5 Ia
F36	17 45 49.789	–28 49 07.89	18.03	16.58	15.13	12.60	–	–
F37	17 45 50.529	–28 49 19.77	–	–	–	12.63	–	–	Radio¹
F38	17 45 50.755	–28 49 20.48	16.33	15.36	14.22	12.38	11(5)	O4-5 Ia
F39	17 45 51.166	–28 49 36.70	16.98	15.84	14.76	12.65	–	–
F40	17 45 50.685	–28 49 18.83	16.63	15.57	14.55	12.67	27(11)	O4-5 Ia⁺
F41	17 45 50.429	–28 49 27.42	18.46	17.15	15.89	13.53	–	–
F42	17 45 50.364	–28 49 21.24	16.99	15.89	14.85	12.82	10(8)	O4-5 Ia
F43	17 45 50.546	–28 49 19.17	17.28	16.21	15.19	13.04	25(11)	O4-5 Ia
F44	17 45 50.701	–28 49 25.59	17.19	16.05	14.93	12.88	5(3)	–	Blend
F45	17 45 50.497	–28 49 24.25	17.33	16.16	15.07	13.01	10(5)	O4-5 Ia
F47	17 45 50.754	–28 49 25.28	17.02	15.92	14.87	12.90	8(6)	O4-5 Ia
F48	17 45 50.623	–28 49 26.96	17.69	16.53	15.42	13.28	–	–
F49	17 45 50.128	–28 49 07.79	17.42	16.25	15.12	12.94	3(3)	O5.5-6 Ia
F50	17 45 50.134	–28 49 26.17	18.30	17.00	15.77	13.53	6(5)	O4-5 Ia
F52	17 45 51.206	–28 49 33.31	17.64	16.41	15.24	12.94	–	–
F53	17 45 50.714	–28 49 25.01	17.11	15.97	14.93	12.94	5(3)	O4-5 Ia
F54	17 45 50.271	–28 49 15.81	17.93	16.63	15.42	13.02	6(6)	O5.5-6 I-III
F55	17 45 50.787	–28 49 22.61	17.11	16.02	15.00	13.03	6(5)	O5.5-6 III
F56	17 45 50.591	–28 49 22.19	17.00	15.92	14.91	13.03	–	–
F57	17 45 50.768	–28 49 20.31	16.91	–	–	13.04	–	–
F58	17 45 49.968	–28 49 19.60	17.83	16.57	15.37	13.05	–	–
F59	17 45 51.138	–28 49 14.34	17.05	15.98	14.95	13.05	–	–
F60	17 45 50.799	–28 49 22.18	17.21	16.08	15.05	13.02	6(5)	O4-5 Ia
F61	17 45 50.144	–28 48 59.09	17.38	16.24	15.06	13.09	–	–
F62	17 45 50.427	–28 49 16.61	17.04	15.99	15.00	13.04	17(14)	O4-5 I-III
F63	17 45 50.838	–28 49 25.68	17.20	16.15	15.14	13.15	7(6)	O4-5 I-III
F64	17 45 50.481	–28 49 16.71	17.15	16.10	15.08	13.13	14(10)	O4-5 I-III
F65	17 45 50.082	–28 49 21.53	17.58	16.42	15.32	13.16	1(1)	O4-5 I-III	Low S/N
F66	17 45 50.532	–28 49 20.42	17.07	15.99	15.00	13.11	–	–
F67	17 45 50.475	–28 49 15.10	17.69	16.56	15.48	13.35	–	–
F68	17 45 50.855	–28 49 18.15	16.70	15.68	14.71	12.93	14(11)	O5.5-6 III
F69	17 45 50.847	–28 49 20.32	17.06	15.99	14.97	13.06	4(4)	O6-6.5 III
F70	17 45 50.252	–28 49 23.39	17.82	16.59	15.42	13.30	–	–
F71	17 45 50.060	–28 49 16.43	18.14	16.92	15.77	13.62	–	–
F72	17 45 50.784	–28 49 20.27	–	16.08	15.05	13.13	–	–
F73	17 45 50.679	–28 49 25.58	17.78	16.59	15.48	13.35	5(3)	–	Blend
F74	17 45 50.993	–28 49 27.49	17.62	16.50	15.42	13.36	5(5)	O5-6.5 I-III
F75	17 45 50.825	–28 49 11.25	18.91	17.48	16.05	13.36	–	–
F76	17 45 50.341	–28 49 17.06	17.64	16.49	15.38	13.38	–	–
F77	17 45 50.771	–28 49 19.83	17.30	16.26	15.23	13.25	25(10)	O6-6.5 III
F78	17 45 51.939	–28 49 24.71	17.94	16.77	15.59	13.44	–	–
F79	17 45 50.074	–28 49 18.11	19.20	17.72	16.23	13.46	–	–
F80	17 45 50.589	–28 49 19.46	17.40	16.29	15.32	13.47	24(10)	–	Blend
F81	17 45 50.713	–28 49 24.24	17.62	16.51	15.46	13.48	10(5)	O6-7 III-V
F82	17 45 50.736	–28 49 19.13	17.37	16.30	15.31	13.40	29(10)	O5-6 III-V
F83	17 45 50.061	–28 49 20.67	18.00	16.81	15.69	13.53	–	–
F84	17 45 50.526	–28 49 16.28	17.58	16.49	15.61	13.54	18(10)	O6-7 III-V
F85	17 45 50.484	–28 49 18.60	17.50	16.47	15.46	13.54	17(10)	O7-8 III-V
F86	17 45 50.985	–28 49 33.59	17.30	16.32	15.35	13.56	–	–
F87	17 45 50.518	–28 49 16.58	17.62	16.58	15.56	13.60	19(10)	O5-6 V
F88	17 45 49.653	–28 49 17.23	19.10	17.66	16.22	13.62	–	–
F89	17 45 50.955	–28 49 17.15	17.33	16.33	15.39	13.65	11(10)	O6-7 V
F90	17 45 50.570	–28 49 32.97	18.30	17.09	15.94	13.68	5(5)	O5-6 V	Brγ infilled
F91	17 45 49.978	–28 49 17.52	18.43	17.19	16.03	13.69	–	–
F92	17 45 50.518	–28 49 21.45	17.59	16.50	15.44	13.48	12(5)	O5-6 V	Brγ infilled
F93	17 45 50.376	–28 49 22.78	18.14	17.04	15.99	13.81	10(8)	O5-6 III-V	Brγ infilled
F94	17 45 50.657	–28 49 28.03	18.74	17.50	16.33	14.14	–	–
F95	17 45 50.578	–28 49 22.00	17.80	16.71	15.69	13.71	–	–
F96	17 45 50.724	–28 49 19.73	17.36	16.35	15.37	13.54	29(10)	O5-6 III
F97	17 45 51.385	–28 49 16.57	17.83	16.72	15.67	13.73	–	–
F98	17 45 51.153	–28 49 37.06	18.08	16.93	15.87	13.75	–	–
F100	17 45 51.061	–28 49 17.61	17.57	16.55	15.59	13.77	–	–
F101	17 45 50.914	–28 49 18.37	17.55	16.53	15.58	13.78	14(11)	O6-8 V
F102	17 45 50.876	–28 49 28.80	18.24	17.07	15.93	13.78	4(4)	O5-8 V
F103	17 45 49.679	–28 49 22.58	20.16	18.68	17.17	14.53	–	–
F104	17 45 50.577	–28 49 43.77	18.09	16.96	15.85	13.79	–	–
F105	17 45 50.596	–28 49 39.60	19.13	17.75	16.37	13.81	–	–
F106	17 45 49.886	–28 49 23.23	–	–	–	13.82	–	–
F107	17 45 49.872	–28 49 30.99	18.01	16.89	15.77	13.87	–	–
F108	17 45 50.809	–28 49 10.93	18.12	17.00	15.94	13.89	–	–
F109	17 45 50.520	–28 49 20.70	18.00	16.91	15.86	13.91	–	–
F110	17 45 50.574	–28 49 16.35	18.00	16.93	15.90	13.93	18(10)	≥O8 V
F111	17 45 50.309	–28 49 03.86	18.45	17.25	16.13	13.94	–	–
F112	17 45 50.507	–28 49 16.36	17.86	16.80	15.81	13.87	14(10)	O6-8 V
F113	17 45 50.017	–28 49 17.47	18.67	17.42	16.22	13.97	–	–
F114	17 45 50.804	–28 49 19.07	17.95	16.90	15.90	13.99	22(10)	O6-8 V
F115	17 45 50.437	–28 49 20.04	17.99	16.91	15.83	13.83	15(10)	O5-6 V
F116	17 45 50.537	–28 49 06.28	18.77	17.68	16.63	14.01	–	–
F117	17 45 50.755	–28 49 19.44	18.05	16.99	15.97	14.06	25(10)	O6-8 V
F118	17 45 50.453	–28 49 25.97	18.66	17.44	16.28	14.08	4(2)	≥O8 V	Low S/N
F119	17 45 50.842	–28 49 22.75	18.18	17.09	16.06	14.06	6(5)	≥O8 V	Low S/N
F120	17 45 50.692	–28 49 29.96	18.75	17.52	16.34	14.09	–	–
F121	17 45 50.204	–28 49 19.64	18.53	17.35	16.24	14.09	5(5)	≥O8 V	Low S/N
F122	17 45 50.358	–28 49 17.28	18.17	17.09	16.05	14.09	–	–
F123	17 45 50.685	–28 49 22.35	–	–	–	14.11	–	–
F124	17 45 50.718	–28 49 17.26	18.48	17.42	16.38	14.11	–	–
F125	17 45 51.488	–28 49 21.75	19.57	18.12	16.69	14.15	–	–
F126	17 45 50.930	–28 49 03.63	17.93	16.93	15.98	14.16	–	–
F127	17 45 51.184	–28 49 31.52	19.45	18.05	16.67	14.16	–	–
F128	17 45 51.216	–28 49 36.53	18.51	17.37	16.28	14.18	–	–
F129	17 45 49.529	–28 49 12.72	19.73	18.27	16.82	14.20	–	–
F130	17 45 50.605	–28 49 27.50	18.80	17.58	16.40	14.21	–	–
F131	17 45 50.163	–28 49 27.46	19.11	17.80	16.55	14.23	1(1)	≥O8 V	Low S/N
F132	17 45 50.796	–28 49 02.68	18.47	17.34	16.28	14.27	–	–
F133	17 45 50.771	–28 49 14.97	18.24	17.19	16.19	14.27	–	–
F134	17 45 50.499	–28 49 36.54	19.21	17.93	16.75	14.28	–	–
F135	17 45 50.363	–28 49 25.73	18.83	17.61	16.43	14.29	2(2)	≥O8 V	Low S/N
F136	17 45 50.077	–28 49 27.84	19.59	18.18	16.83	14.30	5(5)	O6-8 V
F137	17 45 51.486	–28 49 21.26	19.94	18.45	16.93	14.32	–	–
F138	17 45 50.212	–28 49 39.21	19.64	18.24	16.90	14.35	–	–
F139	17 45 51.207	–28 49 23.41	18.59	17.48	16.33	14.36	1(1)	–	Low S/N
F140	17 45 50.564	–28 49 18.48	18.44	17.38	16.34	14.38	–	–
F141	17 45 48.827	–28 49 18.81	20.08	18.57	17.06	14.39	–	–
F142	17 45 50.689	–28 49 24.93	18.63	17.50	16.43	13.41	–	–
F143	17 45 50.716	–28 49 17.24	–	–	–	14.43	–	–
F144	17 45 51.526	–28 49 20.58	19.33	18.05	16.79	14.43	–	–
F145	17 45 51.445	–28 49 20.07	18.45	17.41	16.38	14.44	–	–
F146	17 45 49.867	–28 49 14.90	18.88	17.70	16.57	14.45	–	–
F147	17 45 51.354	–28 49 20.00	18.60	17.52	16.47	14.46	–	–
F148	17 45 51.785	–28 49 28.42	18.69	17.55	16.53	14.47	–	–
F149	17 45 50.682	—28 49 01.56	19.49	18.20	16.86	14.47	–	–
F150	17 45 50.456	–28 49 19.64	18.50	17.38	16.34	14.31	18(9)	–	Featureless?
F151	17 45 50.829	–28 49 27.63	18.92	17.75	16.62	14.48	5(5)	–	Featureless
F152	17 45 50.695	–28 49 36.56	19.21	17.96	16.77	14.48	–	–
F153	17 45 50.360	–28 49 20.00	19.15	17.92	16.74	14.51	8(6)	≥O8 V	Low S/N
F154	17 45 49.992	–28 49 33.20	19.45	18.15	16.89	14.52	–	–
F155	17 45 50.422	–28 49 19.13	18.65	17.57	16.53	14.52	13(9)	O6-8 V
F156	17 45 50.642	–28 49 02.15	19.31	18.04	16.76	14.54	–	–
F157	17 45 50.220	–28 49 24.18	19.11	17.89	16.71	14.55	10(10)	≥O8 V	Low S/N
F158	17 45 51.096	–28 49 21.99	19.09	17.91	16.80	14.56	–	–
F159	17 45 50.882	–28 49 15.69	19.63	18.49	17.32	14.57	1(1)	–	Low S/N
F160	17 45 50.500	–28 49 15.81	18.61	17.55	16.55	14.59	–	–
F161	17 45 50.895	–28 49 40.68	19.75	18.43	17.06	14.59	–	–
F162	17 45 50.820	–28 49 39.10	18.85	17.69	16.56	14.59	–	–
F163	17 45 50.436	–28 49 23.40	19.84	–	–	14.60	–	–
F164	17 45 50.862	–28 49 08.47	18.60	17.54	16.54	14.61	–	–
F165	17 45 51.160	–28 49 15.36	18.60	17.50	16.52	14.65	–	–
F166	17 45 50.675	–28 49 19.57	18.62	17.57	16.52	14.69	23(9)	–	Blend
F167	17 45 50.733	–28 49 17.73	18.24	17.22	16.29	14.42	–	–
F168	17 45 50.495	–28 49 30.21	19.47	18.21	17.00	14.70	1(1)	–	Low S/N
F169	17 45 50.377	–28 49 20.26	19.13	17.91	16.84	14.72	–	–
F170	17 45 50.704	–28 49 20.96	18.74	17.67	16.63	14.74	12(5)	–	Blend
F171	17 45 49.275	–28 49 12.13	19.19	18.00	16.86	14.76	–	–
F172	17 45 50.232	–28 49 17.52	19.05	17.90	16.84	14.76	4(4)	≥O8 V	Low S/N
F173	17 45 50.204	–28 49 20.24	19.10	17.93	16.83	14.80	1(1)	–	Low S/N
F174	17 45 50.745	–28 49 28.20	19.26	18.09	16.95	14.81	3(3)	–	Low S/N
F175	17 45 50.463	–28 49 03.29	19.72	18.44	17.18	14.82	–	–
F176	17 45 50.283	–28 49 23.85	19.25	18.05	16.94	14.83	3(3)	–	Featureless
F177	17 45 50.604	–28 49 16.87	18.94	17.85	16.81	14.83	12(8)	≥O8 V	Low S/N
F178	17 45 50.824	–28 49 06.95	20.09	18.72	17.32	14.85	–	–
F179	17 45 51.356	–28 49 21.37	19.53	18.30	17.08	14.85	–	–
F180	17 45 50.284	–28 48 59.64	19.72	18.43	17.15	14.89	–	–
F181	17 45 50.567	–28 49 07.70	18.84	17.79	16.79	14.90	–	–
F182	17 45 50.586	–28 49 22.91	19.00	17.85	16.76	14.70	–	–
F183	17 45 49.872	–28 49 42.31	20.25	18.83	17.39	14.93	–	–
F184	17 45 50.008	–28 49 29.43	20.15	18.75	17.40	14.94	3(3)	–	Low S/N
F185	17 45 50.282	–28 49 27.56	19.65	18.40	17.18	14.95	2(2)	≥O8 V	Low S/N
F186	17 45 50.001	–28 49 28.24	20.43	19.01	17.61	14.95	6(6)	≥O8 V	Low S/N
F187	17 45 50.542	–28 49 23.30	19.22	18.10	17.05	14.96	–	–
F188	17 45 50.936	–28 49 21.80	19.02	17.93	16.91	14.97	2(2)	≥O8 V	Low S/N
F189	17 45 50.595	–28 49 23.52	18.91	17.79	16.69	14.77	3(3)	–	Featureless
F190	17 45 49.759	–28 49 19.76	19.44	18.25	17.14	14.99	–	–
F191	17 45 51.140	–28 49 18.17	18.83	17.79	16.84	15.00	–	–
F192	17 45 50.048	–28 49 04.94	19.70	18.43	17.16	15.00	–	–
F193	17 45 50.383	–28 49 09.56	19.08	17.98	16.93	15.00	–	–
F194	17 45 50.531	–28 49 07.93	20.41	19.00	17.62	15.01	–	–
F195	17 45 50.530	–28 49 15.30	19.11	18.00	17.01	15.03	–	–
F196	17 45 50.463	–28 49 07.74	19.55	18.35	17.18	15.03	–	–

Notes. Column 1 indicates the nomenclature for cluster members adopted by Fi02 and Blum et al. (2001), cols. 2 and 3 the J2000 coordinates, cols. 4–6 the new HST WFC3 photometry described in Sect. 2.2 and col. 7 F205W filter photometry from Fi02. Column 8 presents the total number of VLT/SINFONI data-cubes available for individual objects, with the number in parentheses being the number of epochs on which these data were obtained (^(a,b,c) denotes that, respectively, 1, 2, or 3 epochs of spectroscopy were not employed due to low S/N). Column 9 provides a spectral classification where spectra are available, while the final column provides additional notes including the presence of radio (data from Lang et al. 2005, where ⁽¹⁾ denotes a radio variable source) and X-ray detections Wang et al. (2006). As described in Sect. 3, F11, F46, F51, and F99 appear to be foreground M stars and so are excluded from this compilation; it would appear likely that other interlopers may also be present amongst those stars without current spectral classifications.

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