2015MNRAS.450.4301R

Query : 2015MNRAS.450.4301R

2015MNRAS.450.4301R - Mon. Not. R. Astron. Soc., 450, 4301-4322 (2015/July-2)

Comprehensive abundance analysis of red giants in the open clusters NGC 1342, 1662, 1912, 2354 and 2447.

REDDY A.B.S., GIRIDHAR S. and LAMBERT D.L.

Abstract (from CDS):

We have observed high-dispersion echelle spectra of red giant members in the five open clusters (OCs) NGC 1342, NGC 1662, NGC 1912, NGC 2354 and NGC 2447 and determined their radial velocities and chemical compositions. These are the first chemical abundance measurements for all but NGC 2447. We combined our clusters from this and previous papers with a sample drawn from the literature for which we remeasured the chemical abundances to establish a common abundance scale. With this homogeneous sample of OCs, we study the relative elemental abundances of stars in OCs in comparison with field stars as a function of age and metallicity. We find a range of mild enrichment of heavy (Ba-Eu) elements in young OC giants over field stars of the same metallicity. Our analysis supports that the youngest stellar generations in cluster might be underrepresented by the solar neighbourhood field stars.

Abstract Copyright: © 2015 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2015)

Journal keyword(s): Galaxy: abundances - Galaxy: open clusters and associations: individual: NGC 1342 - Galaxy: open clusters and associations: individual: NGC 1662 - Galaxy: open clusters and associations: individual: NGC 1912 - Galaxy: open clusters and associations: individual: NGC 2354 - Galaxy: open clusters and associations: individual: NGC 2447

VizieR on-line data: <Available at CDS (J/MNRAS/450/4301): table2.dat table3.dat>

Simbad objects: 83

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Number of rows : 83
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 188 OpC 00 47 14.8 +85 14 42           ~ 990 0
2 NGC 752 OpC 01 56 53.7 +37 45 06           ~ 712 0
3 NGC 1193 OpC 03 05 56.4 +44 22 58     12.6     ~ 97 0
4 NGC 1245 OpC 03 14 44.3 +47 14 06   9.16 8.4     ~ 171 0
5 HD 275509 * 03 31 26.9817477120 +37 21 28.674914652   10.83 9.65     K0 19 0
6 NGC 1342 OpC 03 31 37.4 +37 23 23   7.35 6.7     ~ 133 0
7 HD 275507 * 03 32 02.4666093528 +37 21 21.547777536   11.2 9.98     G0 20 0
8 HD 275501 * 03 32 11.2288403640 +37 22 55.443431280   10.57 9.26     K0 33 0
9 HD 30485 * 04 48 29.5100023824 +10 55 48.267667596   9.52 8.34     G8III 37 0
10 HD 287148 * 04 48 32.0830639248 +10 57 59.017301856   10.03 8.87     G5 41 0
11 NGC 1662 OpC 04 48 48.5 +10 52 46   7.0 6.4     ~ 149 0
12 NGC 1817 OpC 05 12 33.9 +16 41 34           ~ 210 0
13 Cl King 22 OpC 05 22 09.7 +45 26 30           ~ 81 0
14 NGC 1883 OpC 05 25 53.9 +46 29 14     12.0     ~ 52 0
15 BD+35 1121 * 05 28 35.0745448680 +36 01 15.694911552   11.38 9.77     ~ 3 0
16 M 38 OpC 05 28 40.0 +35 49 08   6.69 6.4     ~ 184 2
17 BD+35 1125 RG* 05 28 44.0559990360 +35 49 52.749448284   11.04 9.85 9.49   G2III 28 0
18 BD+35 1131 RG* 05 29 08.3730871824 +35 51 29.784960396   10.9 9.66     G8III 26 0
19 Cl Berkeley 20 OpC 05 32 36.8 +00 11 06           ~ 129 0
20 Cl Berkeley 21 OpC 05 51 44.7 +21 48 36   12.26 11.1     ~ 130 0
21 M 37 OpC 05 52 18.6 +32 32 36           ~ 436 0
22 Cl Berkeley 22 OpC 05 58 28.5 +07 45 39           ~ 96 0
23 NGC 2141 OpC 06 02 56.5 +10 26 57           ~ 159 0
24 NGC 2158 OpC 06 07 26.7 +24 05 53           ~ 317 0
25 NGC 2194 OpC 06 13 44.8 +12 48 48   9.03 8.5     ~ 90 1
26 Cl Berkeley 73 OpC 06 22 04.7 -06 19 13           ~ 66 0
27 NGC 2243 OpC 06 29 34.3 -31 16 58   10.12 9.4     ~ 298 0
28 NGC 2251 OpC 06 34 44.8 +08 21 15   7.69 7.3     ~ 123 0
29 Cl Collinder 110 OpC 06 38 42.3 +02 04 23     10.5     ~ 84 1
30 Cl Berkeley 25 OpC 06 41 16.1 -16 28 58           ~ 67 0
31 NGC 2266 OpC 06 43 19.7 +26 58 35     9.5     ~ 82 0
32 Cl Ruprecht 4 OpC 06 48 57.7 -10 31 24           ~ 51 0
33 Cl Berkeley 75 OpC 06 49 00.0 -23 59 51           ~ 71 0
34 Cl Berkeley 29 OpC 06 53 03.6 +16 55 24   14.3       ~ 187 0
35 Cl Berkeley 31 OpC 06 57 37.5 +08 17 18           ~ 142 0
36 Cl Berkeley 33 OpC 06 57 49.7 -13 13 38           ~ 95 0
37 Cl Berkeley 32 OpC 06 58 06.7 +06 25 53           ~ 164 0
38 Cl Haffner 2 OpC 07 03 06.2 -20 49 07           ~ 146 0
39 NGC 2324 OpC 07 04 08.5 +01 02 50   8.83 8.4     ~ 174 0
40 NGC 2335 OpC 07 06 45.8 -10 01 00   7.76 7.2     ~ 92 0
41 NGC 2354 183 * 07 13 51.9315243024 -25 44 24.215741448   12.805 11.555     ~ 21 0
42 NGC 2354 OpC 07 13 59.2 -25 43 40   7.28 6.5     ~ 111 0
43 NGC 2354 205 * 07 13 59.2049827008 -25 45 50.095203876   12.33 11.13     ~ 16 0
44 NGC 2355 OpC 07 16 59.1 +13 46 09     9.7     ~ 127 0
45 NGC 2360 OpC 07 17 45.8 -15 38 21           ~ 213 0
46 NAME Saurer A Cluster OpC 07 20.9 +01 48           ~ 70 0
47 Cl Melotte 66 OpC 07 26 19.2 -47 41 14   8.73       ~ 213 0
48 NGC 2425 OpC 07 38 18.4 -14 53 32           ~ 64 0
49 NGC 2420 OpC 07 38 24.6 +21 34 26   9.0 8.3     ~ 523 0
50 CPD-23 2745 * 07 44 25.7293012440 -23 49 52.987121184   11.05 10.16     ~ 37 0
51 CPD-23 2764 * 07 44 33.6559676712 -23 51 42.125907528   10.46 9.38     ~ 36 0
52 NGC 2447 OpC 07 44 34.6 -23 51 22           ~ 170 1
53 CD-23 6102 * 07 44 50.2512648336 -23 52 27.129050472   10.78 9.96     ~ 35 0
54 Cl Berkeley 39 OpC 07 46 48.1 -04 39 59           ~ 209 1
55 NGC 2477 OpC 07 52 11.4 -38 32 47   6.64 5.8     ~ 314 0
56 NGC 2482 OpC 07 55 09.9 -24 16 39   7.71 7.3     ~ 102 0
57 NGC 2506 OpC 08 00 02.3 -10 46 22   8.28 7.6     ~ 313 0
58 NGC 2527 OpC 08 05 02.4 -28 07 06   6.81 6.5     ~ 119 0
59 NGC 2539 OpC 08 10 39.1 -12 49 52   7.05 6.5     ~ 164 0
60 IC 2391 OpC 08 41 17.5 -53 03 00           ~ 871 0
61 NGC 2660 OpC 08 42 40.0 -47 11 59   9.05 8.8     ~ 164 0
62 NGC 2682 OpC 08 51 23.5 +11 48 54           ~ 2528 0
63 IC 2602 OpC 10 42 55.9 -64 25 22           ~ 735 0
64 NGC 3532 OpC 11 05 33.9 -58 42 13           ~ 414 0
65 IC 2714 OpC 11 17 30.9 -62 43 09     8.2     ~ 110 0
66 NGC 3960 OpC 11 50 36.4 -55 40 40   9.07 8.3     ~ 152 0
67 Cl Collinder 261 OpC 12 38 04.7 -68 22 40     10.7     ~ 216 0
68 * alf Boo RG* 14 15 39.67207 +19 10 56.6730 2.46 1.18 -0.05 -1.03 -1.68 K1.5IIIFe-0.5 2417 1
69 NGC 5822 OpC 15 04 08.3 -54 21 52           ~ 238 0
70 NGC 6134 OpC 16 27 48.5 -49 09 40   7.89 7.2     ~ 166 0
71 NGC 6192 OpC 16 40 18.7 -43 21 16           ~ 99 0
72 NGC 6253 OpC 16 59 06.4 -52 42 39     10.2     ~ 209 0
73 NGC 6281 OpC 17 04 44.6 -37 57 08           ~ 156 0
74 NGC 6404 OpC 17 39 38.9 -33 13 24     10.6     ~ 55 0
75 NGC 6583 OpC 18 15 51.0 -22 08 38     10.0     ~ 83 0
76 NGC 6633 OpC 18 27 30.2 +06 38 21           ~ 423 0
77 IC 4756 OpC 18 38 39.0 +05 26 14           ~ 274 0
78 NGC 6791 OpC 19 20 52.8 +37 46 40   10.52 9.5     ~ 1120 0
79 NGC 6819 OpC 19 41 18.3 +40 11 19   8.21 7.3     ~ 719 0
80 NGC 6939 OpC 20 31 40.6 +60 38 54           ~ 171 0
81 NGC 7142 OpC 21 45 10.2 +65 47 05   10.36 9.3     ~ 157 0
82 NGC 7160 OpC 21 53 44.8 +62 35 33   6.34 6.1     ~ 243 0
83 NGC 7789 OpC 23 57 19.4 +56 43 28   7.68 6.7     ~ 575 0

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