A third cluster of red supergiants in the vicinity of the massive cluster RSGC3

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Table 1

Photometrically selected candidates and complementary targets, along with their characteristics.

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

Core01	18450794−0341240	...	10.50 ± 0.03	8.08 ± 0.04	6.91 ± 0.02	0.31	2.60	91	−22.29	K7I
Core02	18451210−0342054	...	10.42 ± 0.02	8.04 ± 0.02	6.90 ± 0.02	0.33	...	...	...	...
Core03	18450185−0342065	16.90 ± 0.13	10.45 ± 0.02	7.94 ± 0.03	6.70 ± 0.01	0.29	2.69	95	−27.08	M1I
Core04	18451760−0343051	...	9.97 ± 0.02	7.40 ± 0.03	6.06 ± 0.02	0.15	2.81	95	−27.69	M2I
Core05	18451722−0343136	...	10.38 ± 0.02	7.64 ± 0.03	6.28 ± 0.02	0.29	3.04	95	−26.71	M1I
Core06	18451696−0341260	...	9.56 ± 0.02	7.29 ± 0.04	6.15 ± 0.02	0.22	2.23	91	−30.33	M4I
Core07	18451959−0341417	...	10.00 ± 0.02	7.92 ± 0.03	6.85 ± 0.02	0.15	2.00	134	−20.70	M3III
Core08	18450629−0340575	11.4 ± 0.3^a	8.60 ± 0.02	7.33 ± 0.03	6.84 ± 0.02	0.37	0.62	50	−20.40	M3III
Core09	18451118−0340531	15.4 ± 0.3^a	9.34 ± 0.02	6.86 ± 0.04	5.62 ± 0.02	0.23	2.62	86	−27.93	M2I
Core10	18451116−0339341	14.8 ± 0.3^a	8.80 ± 0.02	6.47 ± 0.03	5.35 ± 0.02	0.29	2.39	95	−26.85	M1I
Halo01	18452809−0341225	...	11.49 ± 0.02	8.73 ± 0.02	7.31 ± 0.02	0.21	3.16	119	−25.63	M0I
Halo02	18452892−0342269	...	10.75 ± 0.02	8.26 ± 0.03	7.07 ± 0.02	0.33	2.66	42	−24.59	M0I
Halo03	18453027−0340542	...	9.21 ± 0.02	6.84 ± 0.03	5.64 ± 0.02	0.21	2.56	85	−24.04	K8I
Near01	18452489−0345415	...	11.34 ± 0.02	8.47 ± 0.03	7.04 ± 0.01	0.30	...	...	...	...
Near02	18453424−0345081	12.2 ± 0.3^a	8.73 ± 0.02	7.23 ± 0.03	6.57 ± 0.03	0.31	...	...	...	...
Near03	18453660−0339191	10.42 ± 0.03	7.19 ± 0.02	5.82 ± 0.03	5.23 ± 0.01	0.30	...	...	...	...
Near04	18445323−0346216	13.96 ± 0.03	8.51 ± 0.02	6.53 ± 0.02	5.63 ± 0.01	0.35	...	...	...	...
Near05	18450697−0346449	...	10.40 ± 0.02	8.08 ± 0.02	6.94 ± 0.02	0.29	...	...	...	...
Near06	18445850−0344448	...	10.66 ± 0.02	8.45 ± 0.03	7.33 ± 0.03	0.18	2.19	114	−20.27	M3III
Near07	18445398−0344326	16.88 ± 0.12	10.16 ± 0.02	7.89 ± 0.03	6.76 ± 0.01	0.25	2.26	104	−29.44	M3I
Near08	18445742−0336341	...	10.92 ± 0.02	7.53 ± 0.03	5.80 ± 0.02	0.29	...	...	...	...
Near09	18444745−0336596	...	11.23 ± 0.02	8.58 ± 0.02	7.30 ± 0.02	0.35	...	...	...	...
Near10	18444564−0337288	...	10.96 ± 0.02	8.44 ± 0.02	7.20 ± 0.01	0.28	...	...	...	...
Near11	18450837−0336096	...	9.98 ± 0.02	7.97 ± 0.02	6.98 ± 0.02	0.23	...	...	...	...
Near12	18451949−0336233	...	9.56 ± 0.02	7.54 ± 0.04	6.50 ± 0.01	0.16	...	...	...	...

Complementary targets
2mass01	18445076 − 0346312	9.96 ± 0.03	7.61 ± 0.01	6.43 ± 0.02	6.00 ± 0.02	0.41	...	...	...	...
2mass02	18453470−0345107	...	12.26 ± 0.04	9.19 ± 0.03	7.61 ± 0.02	0.21	...	...	...	...
2mass03	18450271−0346424	16.96 ± 0.13	9.61 ± 0.02	6.99 ± 0.02	5.79 ± 0.02	0.46	...	...	...	...
2mass04	18452213−0345345	17.2 ± 0.3^a	10.92 ± 0.02	8.46 ± 0.03	7.34 ± 0.02	0.43	...	...	...	...
2mass05	18450029−0337344	...	9.97 ± 0.02	7.19 ± 0.02	5.89 ± 0.02	0.43	...	...	...	...
2mass06	18452164−0337363	13.9 ± 0.3^a	10.24 ± 0.03	8.47^b	7.69^b	0.36	...	...	...	...
2mass07	18453075−0341451	...	11.81 ± 0.02	9.57 ± 0.02	8.51 ± 0.02	0.34	2.28	66	–24.82	M0I

Notes.

⁽¹⁾

JHK_S magnitudes come from 2MASS, i magnitudes from DENIS except where otherwise noted.

^(a)

Photographic I magnitude from USNO.

^(b)

The magnitude is an upper limit.

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