2016MNRAS.463.1632P

Query : 2016MNRAS.463.1632P

2016MNRAS.463.1632P - Mon. Not. R. Astron. Soc., 463, 1632-1641 (2016/December-1)

An Analysis of the Population of Extended Main Sequence Turn-off Clusters in the Large Magellanic Cloud.

PIATTI A.E. and BASTIAN N.

Abstract (from CDS):

We combine a number of recent studies of the extended main sequence turn-off (eMSTO) phenomenon in intermediate age stellar (1 - 2 Gyr) clusters in the Large Magellanic Cloud (LMC) in order to investigate its origin. By employing the largest sample of eMSTO LMC clusters so far used, we show that cluster core radii, masses, and dynamical state are not related to the genesis of eMSTOs. Indeed, clusters in our sample have core radii, masses and age-relaxation time ratios in the range ≈ 2-6 pc, 3.35- 5.50 (log(M_cls/M_*) and 0.2-8.0, respectively. These results imply that the eMSTO phenomenon is not caused by actual age spreads within the clusters. Furthermore, we confirm from a larger cluster sample recent results including young eMSTO LMC clusters, that the FWHM at the MSTOs correlates most strongly with cluster age, suggesting that a stellar evolutionary effect is the underlying cause.

Journal keyword(s): techniques: photometric - galaxies: general - Magellanic Clouds - Magellanic Clouds

Simbad objects: 39

Full paper

View the references in ADS

Number of rows : 39

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag I	Sp type	#ref 1850 - 2024	#notes
1	NGC 411	Cl*	01 07 55.64	-71 46 03.1	13.05	12.63	12.10	11.11	~	105	0
2	NGC 419	OpC	01 08 17.26	-72 53 01.8	11.41	11.16	10.50	9.34	~	272	0
3	NAME Magellanic Clouds	GrG	03 00	-71.0					~	7064	0
4	NGC 1651	GlC	04 37 32.530	-70 35 08.71		12.99	12.28		~	122	0
5	NGC 1718	Cl*	04 52 25.040	-67 03 08.50		13.01	12.25		~	72	0
6	NGC 1751	Cl*	04 54 12.91	-69 48 26.8		15.06	11.73		~	89	0
7	NGC 1755	Cl*	04 55 16.390	-68 12 23.12		10.00	9.85		~	77	0
8	NGC 1783	GlC	04 59 08.590	-65 59 15.84		10.9	10.93		~	253	0
9	NGC 1795	Cl*	04 59 46.940	-69 48 08.06		13.15	12.42		~	49	0
10	NGC 1806	GlC	05 02 11.180	-67 59 05.89		11.1			~	157	0
11	NGC 1846	Cl*	05 07 34.900	-67 27 32.45		12.08	11.31		~	215	0
12	[SL63] 244	Cl*	05 07 37.540	-68 32 31.20		13.81	13.04		~	26	0
13	NGC 1850	Cl*	05 08 50.190	-68 45 35.65		8.84	8.96		~	273	1
14	NGC 1852	Cl*	05 09 23.760	-67 46 38.00		12.74	12.01		~	51	0
15	NGC 1856	Cl*	05 09 30.290	-69 07 45.08		10.40	10.06		~	153	0
16	OGLE-CL LMC 318	Cl*	05 17 48.270	-69 38 53.08		12.89	12.32		~	31	0
17	NAME LMC	G	05 23 34.6	-69 45 22			0.4		~	17430	0
18	NGC 1987	GlC	05 27 16.940	-70 44 14.16		12.1			~	92	0
19	NGC 1978	GlC	05 28 45.330	-66 14 12.04		10.7	10.70		~	309	0
20	KMHK 960	Cl*	05 28 48.930	-71 38 01.39		13.87	13.14		~	21	0
21	ESO 86-5	Cl*	05 31 07.34	-63 32 25.8		14.39	13.66		~	14	0
22	IC 2146	Cl*	05 37 46	-74 47.0		13.10	12.41		~	35	0
23	ESO 57-30	GlC	05 42 17.300	-71 35 27.47		12.88	12.09		~	24	0
24	ESO 86-26	Cl*	05 43 20	-66 15.7		14.00	13.33		~	20	0
25	NGC 2108	GlC	05 43 56.270	-69 10 54.37		12.90	12.32		~	67	0
26	KMHK 1499	Cl*	05 53 24.200	-70 04 11.92		13.86	13.18		~	20	0
27	NGC 2161	Cl*	05 55 43.0	-74 21 14		13.75	12.95		~	18	0
28	NGC 2154	Cl*	05 57 38	-67 15.7		12.47	11.79		~	60	0
29	NGC 2173	GlC	05 57 58	-72 58.7		12.74	11.88		~	141	0
30	NGC 2155	Cl*	05 58 32.070	-65 28 38.62		13.41	12.60		~	106	0
31	NGC 2162	GlC	06 00 30.21	-63 43 18.2		13.38	12.70		~	78	0
32	NGC 2203	Cl*	06 04 42.17	-75 26 15.8		12.80	11.29		~	50	0
33	NGC 2209	GlC	06 08 36.06	-73 50 07.9		13.58	13.15		~	114	0
34	NGC 2213	Cl*	06 10 42.000	-71 31 43.99					~	95	0
35	ESO 57-75	Cl*	06 13 27.3	-70 41 42		14.41	13.67		~	42	0
36	NGC 2231	GlC	06 20 43.129	-67 31 06.96		13.87	13.20		~	61	0
37	ESO 57-81	Cl*	06 24 49	-71 39.5					~	10	0
38	NGC 2249	GlC	06 25 49	-68 55.2		12.66	12.23		~	72	0
39	KMHK 1760	Cl*	06 33 01	-71 07.7		14.60	14.04		~	12	0

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