A massive association around the obscured open cluster RSGC3

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Table 1

Candidates selected as possible red luminous stars, with their characteristics.

ID	2MASS	J¹	H¹	K_S¹	Q	i¹	Spectral	Spectral	E(J − K_S)	v_LSR
							Type (TiO)	Type		(km s^-1)

Field 1
F1S01	18445403−0329009	7.55 ± 0.02	6.26 ± 0.04	5.71 ± 0.02	0.30	11.08 ± 0.02	M7	M7 Ib/II	0.55	+43
F1S02	18444686−0331074	8.78 ± 0.03	6.71 ± 0.02	5.76 ± 0.02	0.38	14.44 ± 0.04	M1	M1 Ia^*	1.96	+73
F1S03	18444439−0334197	8.21 ± 0.02	6.86 ± 0.04	6.32 ± 0.02	0.39	11.30 ± 0.02	−	−	−	−
F1S04	18443941−0330003	8.66 ± 0.03	6.76 ± 0.04	5.82 ± 0.02	0.19	13.99 ± 0.03	M2	M2 Iab^*	1.74	+112
F1S05	18443100−0330499	9.87 ± 0.02	7.93 ± 0.05	6.97 ± 0.03	0.21	15.44 ± 0.06	−	−	−	−
F1S06	18442945−0330024	8.45 ± 0.03	6.39 ± 0.03	5.41 ± 0.02	0.30	14.13 ± 0.04	M3	M2 Ia^*	1.94	+93
F1S07	18442796−0329425	8.06 ± 0.02	5.91 ± 0.04	4.85 ± 0.02	0.25	14.46 ± 0.04	M5	M4 Iab^*	2.04	+93
F1S08	18443037−0328470	7.34 ± 0.02	5.20 ± 0.04	4.10 ± 0.30	0.16	13.70 ± 0.03	M4	M4 Ib^*	2.07	+75
F1S09	18442053−0328446	9.28 ± 0.02	7.24 ± 0.07	6.21 ± 0.03	0.21	15.32 ± 0.06	−	−	−	−
F1S10	18442322−0324578	8.08 ± 0.03	6.64 ± 0.05	5.94 ± 0.02	0.18	11.91 ± 0.02	M6	M5 Ib/II	0.95	+59
F1S11	18441700−0325360	8.68 ± 0.03	7.40 ± 0.04	6.89 ± 0.02	0.36	11.44 ± 0.02	−	−	−	−
F1S12	18444065−0335199	8.90 ± 0.03	7.49 ± 0.03	6.90 ± 0.02	0.37	12.22 ± 0.03	−	−	−	−

Field 2
F2S01	18444846−0313495	9.14 ± 0.02	7.33 ± 0.03	6.50 ± 0.02	0.32	14.01 ± 0.04	M1	M0 Ia^*	1.63	+72
F2S02	18444431−0313350	8.69 ± 0.02	6.39 ± 0.03	5.23 ± 0.02	0.22	15.52 ± 0.07	−	−	−	−
F2S03	18444044−0314142	8.06 ± 0.02	6.22 ± 0.03	5.31 ± 0.02	0.21	13.21 ± 0.03	M1	M1 Iab^*	1.67	+86
F2S04	18444283−0315168	8.53 ± 0.02	6.69 ± 0.04	5.80 ± 0.02	0.24	13.69 ± 0.03	M2	M1.5 Iab^*	1.64	+87
F2S05	18444023−0315329	7.21 ± 0.03	5.51 ± 0.03	4.72 ± 0.03	0.30	12.40 ± 0.03	M8	M7 II	1.19	+61
F2S06	18442823−0312558	7.50 ± 0.03	6.38 ± 0.03	5.94 ± 0.02	0.34	9.70 ± 0.03	−	−	−	−
F2S07	18443833−0316596	7.32 ± 0.02	6.05 ± 0.04	5.49 ± 0.02	0.26	10.68 ± 0.03	M7	M6 III	0.58	+85
F2S08	18443324−0306334	8.44 ± 0.03	7.34 ± 0.06	6.88 ± 0.04	0.27	10.73 ± 0.02	−	−	−	−
F2S09	18443220−0304597	9.04 ± 0.03	7.29 ± 0.05	6.44 ± 0.04	0.23	13.77 ± 0.03	M5	M5.5 III	1.36	+94
F2S10	18443172−0302217	8.40 ± 0.02	6.85 ± 0.03	6.19 ± 0.03	0.35	12.15 ± 0.03	−	−	−	−
F2S11	18444658−0302416	8.65 ± 0.02	6.69 ± 0.03	5.79 ± 0.02	0.33	14.18 ± 0.04	−	−	−	−

Field 3
F3S01	18461105−0330091	7.08 ± 0.02	5.79 ± 0.03	5.26 ± 0.02	0.33	10.04 ± 0.04	M3	M4 II-III	0.65	−22
F3S02	18460994−0334581	8.10 ± 0.02	6.80 ± 0.05	6.26 ± 0.02	0.33	10.94 ± 0.02	M2	M3.5 III	0.70	+10
F3S03	18455541−0331254	8.37 ± 0.02	6.82 ± 0.05	6.17 ± 0.02	0.38	13.04 ± 0.02	M8	M7 III	0.90	+66
F3S04	18455357−0332069	9.30 ± 0.02	7.31 ± 0.04	6.38 ± 0.03	0.31	14.76 ± 0.04	−	−	−	−
F3S05	18454257−0332406	6.68 ± 0.02	5.27 ± 0.02	4.60 ± 0.02	0.19	11.67 ± 0.02	M9	M7 III	0.78	−37
F3S06	18453198−0331536	7.99 ± 0.02	6.31 ± 0.03	5.51 ± 0.03	0.24	11.5 ± 0.3	−	−	−	−
F3S07	18453212−0334044	8.40 ± 0.03	6.45 ± 0.03	5.51 ± 0.03	0.25	13.4 ± 0.3	−	−	−	−
F3S08	18453872−0336069	7.55 ± 0.03	6.23 ± 0.033	5.66 ± 0.02	0.29	10.96 ± 0.02	M6	M5 II-III	0.68	+59
F3S09	18453660−0339191	7.20 ± 0.02	5.83 ± 0.04	5.24 ± 0.02	0.30	10.42 ± 0.03	M3	M4 II	0.79	+35
F3S10	18460233−0338568	8.54 ± 0.03	6.10 ± 0.04	4.94 ± 0.02	0.36	15.31 ± 0.05	−	−	−	−

Notes.

⁽¹⁾

JHK_S magnitudes from 2MASS. i magnitudes from DENIS, except for F3S06 and F3S07, which are photographic I from USNO.

^(*)

Likely members of the RSGC3 association.

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