2016MNRAS.460.1869C

Query : 2016MNRAS.460.1869C

2016MNRAS.460.1869C - Mon. Not. R. Astron. Soc., 460, 1869-1875 (2016/August-1)

Searching for GC-like abundance patterns in young massive clusters.

CABRERA-ZIRI I., LARDO C., DAVIES B., BASTIAN N., BECCARI G., LARSEN S.S. and HERNANDEZ S.

Abstract (from CDS):

Studies during the last decade have revealed that nearly all globular clusters (GCs) host multiple populations (MPs) of stars with a distinctive chemical patterns in light elements. No evidence of such MPs has been found so far in lower mass (<∼ 10^4 M_☉) open clusters nor in intermediate-age (1-2 Gyr) massive (>10^5 M_☉) clusters in the Local Group. Young massive clusters (YMCs) have masses and densities similar to those expected of young GCs in the early Universe, and their near-infrared spectra are dominated by the light of red super giants (RSGs). The spectra of these stars may be used to determine the cluster's abundances, even though the individual stars cannot be spatially resolved from one another. We carry out a differential analysis between the Al lines of YMC NGC 1705: 1 and field Small Magellanic Cloud RSGs with similar metallicities. We exclude at high confidence extreme [Al/Fe] enhancements similar to those observed in GCs like NGC 2808 or NGC 6752. However, smaller variations cannot be excluded.

Abstract Copyright: © 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): globular clusters: general - galaxies: star clusters: general - galaxies: star clusters: individual: NGC 1705: 1

CDS comments: NGC 6949 is a probable misprint for NGC 6946.

Simbad objects: 41

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Number of rows : 41
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NGC 104 GlC 00 24 05.359 -72 04 53.20     4.09     ~ 4158 0
2 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
3 NGC 288 GlC 00 52 45.24 -26 34 57.4   10 8.13     ~ 1130 0
4 NGC 362 GlC 01 03 14.26 -70 50 55.6     6.58     ~ 1167 0
5 NAME NGC 1569 CL* B Cl* 04 30 49.0 +64 50 53           ~ 77 0
6 NGC 1569 rG 04 30 49.186 +64 50 52.52 11.72 11.86 11.03     ~ 1297 3
7 NGC 1651 GlC 04 37 32.530 -70 35 08.71   12.99 12.28     ~ 125 0
8 NGC 1705 Sy2 04 54 13.4661493464 -53 21 39.471592428 12.32 12.96 12.56 12.58 12.9 ~ 692 1
9 NGC 1783 GlC 04 59 08.590 -65 59 15.84   10.9 10.93     ~ 273 0
10 NGC 1806 GlC 05 02 11.180 -67 59 05.89   11.1       ~ 165 0
11 NGC 1851 GlC 05 14 06.76 -40 02 47.6           ~ 1529 0
12 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
13 M 79 GlC 05 24 10.59 -24 31 27.3     8.16     ~ 883 0
14 NGC 1978 GlC 05 28 45.330 -66 14 12.04   10.7 10.70     ~ 317 0
15 NGC 2173 GlC 05 57 58 -72 58.7   12.74 11.88     ~ 148 0
16 Cl Berkeley 39 OpC 07 46 48.1 -04 39 59           ~ 209 1
17 NGC 2808 GlC 09 12 03.10 -64 51 48.6           ~ 1540 0
18 NGC 3201 GlC 10 17 36.82 -46 24 44.9           ~ 1001 0
19 Cl Ruprecht 106 GlC 12 38 40.20 -51 09 01.0           ~ 413 0
20 NGC 4833 GlC 12 59 33.92 -70 52 35.4           ~ 467 0
21 M 3 GlC 13 42 11.62 +28 22 38.2     6.39     ~ 2593 0
22 M 5 GlC 15 18 33.22 +02 04 51.7     5.95     ~ 2095 0
23 M 80 GlC 16 17 02.41 -22 58 33.9           ~ 780 0
24 M 4 GlC 16 23 35.22 -26 31 32.7           ~ 1978 0
25 NGC 6139 GlC 16 27 39.987 -38 50 57.03   11.03 9.68     ~ 231 0
26 M 107 GlC 16 32 31.86 -13 03 13.6           ~ 835 0
27 M 13 GlC 16 41 41.634 +36 27 40.75     5.8     ~ 2291 0
28 M 12 GlC 16 47 14.18 -01 56 54.7     6.07     ~ 736 0
29 M 10 GlC 16 57 09.05 -04 06 01.1     4.98     ~ 857 0
30 NGC 6388 GlC 17 36 17.461 -44 44 08.34           ~ 988 1
31 NGC 6441 GlC 17 50 13.06 -37 03 05.2           ~ 940 0
32 M 54 GlC 18 55 03.33 -30 28 47.5           ~ 1164 0
33 NGC 6752 GlC 19 10 52.11 -59 59 04.4           ~ 2121 0
34 NGC 6791 OpC 19 20 52.8 +37 46 40   10.52 9.5     ~ 1120 0
35 M 55 GlC 19 39 59.71 -30 57 53.1     6.49     ~ 913 0
36 Cl Terzan 8 GlC 19 41 44.41 -33 59 58.1     11.54     ~ 357 0
37 M 71 GlC 19 53 46.49 +18 46 45.1           ~ 1190 0
38 [L2004] n6946-1447 Cl* 20 34 32.03 +60 08 14.7   15.71 15.7     ~ 24 0
39 NGC 6946 H2G 20 34 52.332 +60 09 13.24   10.5       ~ 2661 2
40 M 15 GlC 21 29 58.33 +12 10 01.2           ~ 3274 0
41 NAME Local Group GrG ~ ~           ~ 9325 0

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