2013ApJ...769...40C

Query : 2013ApJ...769...40C

2013ApJ...769...40C - Astrophys. J., 769, 40 (2013/May-3)

Potassium in globular cluster stars: comparing normal clusters to the peculiar cluster NGC 2419.

CARRETTA E., GRATTON R.G., BRAGAGLIA A., D'ORAZI V., LUCATELLO S., SOLLIMA A. and SNEDEN C.

Abstract (from CDS):

Two independent studies recently uncovered two distinct populations among giants in the distant, massive globular cluster (GC) NGC 2419. One of these populations has normal magnesium (Mg) and potassium (K) abundances for halo stars: enhanced Mg and roughly solar K. The other population has extremely depleted Mg and very enhanced K. To better anchor the peculiar NGC 2419 chemical composition, we have investigated the behavior of K in a few red giant branch stars in NGC 6752, NGC 6121, NGC 1904, and ω Cen. To verify that the high K abundances are intrinsic and not due to some atmospheric features in giants, we also derived K abundances in less evolved turn-off and subgiant stars of clusters 47 Tuc, NGC 6752, NGC 6397, and NGC 7099. We normalized the K abundance as a function of the cluster metallicity using 21 field stars analyzed in a homogeneous manner. For all GCs of our sample, the stars lie in the K-Mg abundance plane on the same locus occupied by the Mg-normal population in NGC 2419 and by field stars. This holds for both giants and less-evolved stars. At present, NGC 2419 seems unique among GCs.

Abstract Copyright: ∼

Journal keyword(s): globular clusters: general - globular clusters: individual (NGC 6752, NGC 6121, NGC 1904, NGC 2419, NGC 6397, NGC 104, NGC 7099) - stars: abundances - stars: evolution - stars: Population II

VizieR on-line data: <Available at CDS (J/ApJ/769/40): table1.dat>

Nomenclature: Table 1: [CGB2013] NGC 7099 NNN N=8 among (Nos 789-946).

Simbad objects: 113

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Number of rows : 113
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 Cl* NGC 104 GVS 206415 * 00 19 36.40 -71 58 57.0           ~ 4 0
2 Cl* NGC 104 GVS 429 * 00 20 18.9976458288 -72 01 11.187808500   16.699 19.022     ~ 5 0
3 Cl* NGC 104 GVS 975 * 00 20 52.30 -71 58 01.8   17.919 17.322     ~ 6 0
4 Cl* NGC 104 GVS 1081 * 00 21 03.82 -72 06 57.7   17.962 17.375     ~ 7 0
5 Cl* NGC 104 GVS 478 * 00 21 08.3955030792 -71 58 46.482374136   17.609 16.827     ~ 4 0
6 Cl* NGC 104 GVS 482 * 00 21 10.88 -72 04 15.2   17.352 18.097     ~ 5 0
7 Cl* NGC 104 GVS 435 * 00 21 13.65 -72 03 32.4   17.540 16.739     ~ 4 0
8 Cl* NGC 104 GVS 1012 * 00 21 26.5736668872 -72 00 37.148372136   17.942 17.361     ~ 7 0
9 Cl* NGC 104 GVS 456 * 00 21 30.42 -72 05 35.9   17.537 16.746     ~ 4 0
10 Cl* NGC 104 GVS 433 * 00 21 49.24 -72 02 54.1   17.502 16.723     ~ 5 0
11 Cl* NGC 104 GVS 201600 * 00 21 52.55 -72 05 27.7           ~ 5 0
12 Cl* NGC 104 GVS 201075 * 00 22 00.40 -72 05 59.4           ~ 5 0
13 NGC 104 GlC 00 24 05.359 -72 04 53.20     4.09     ~ 4158 0
14 HD 2665 PM* 00 30 45.4469338728 +57 03 53.628989292 8.66 8.51 7.72     G5IIIw 188 0
15 BD+29 366 PM* 02 10 24.5274364299 +29 48 23.663397433 9.27 9.35 8.77 8.24 7.85 G3 146 0
16 HD 19445 Pe* 03 08 25.5883873084 +26 19 51.400965175 8.29 8.52 8.06 7.60 7.27 G2VFe-3 801 0
17 HD 23439A SB* 03 47 02.1135215373 +41 25 38.103867665   8.89 8.12 7.7   K2:V_Fe-1.3 255 0
18 HD 25329 PM* 04 03 14.9979736362 +35 16 23.805785323 9.75 9.37 8.50 7.75 7.23 K1VbFe-2 379 0
19 2MASS J05240439-2431520 RG* 05 24 04.4000273664 -24 31 52.124672784   16.002 15.047   13.969 ~ 10 0
20 2MASS J05240661-2431125 RG* 05 24 06.6134494656 -24 31 12.622308024   15.41 14.38   13.26 ~ 17 0
21 M 79 GlC 05 24 10.59 -24 31 27.3     8.16     ~ 883 0
22 UCAC4 328-007742 RG* 05 24 10.7491775520 -24 35 44.468077704   15.855 15.047 14.680 13.867 ~ 19 0
23 2MASS J05242075-2433266 RG* 05 24 20.7540084192 -24 33 26.733534444   15.936 14.987   13.909 ~ 17 0
24 UCAC4 328-007892 RG* 05 24 26.0585703192 -24 31 47.995073832   15.399 14.296 13.765 13.096 ~ 18 0
25 BD+37 1458 Pe* 06 16 01.5222885381 +37 43 18.754343426 9.41 9.52 8.92 8.34 7.91 G0 146 0
26 HD 45282 Pe* 06 26 40.7720940072 +03 25 29.792391024 8.71 8.69 8.03     Gwl 164 0
27 NGC 2419 GlC 07 38 08.51 +38 52 54.9     10.05     ~ 998 0
28 [KGS2008] J073813.5+385257 RG* 07 38 13.4816224636 +38 52 57.553320404   18.88 17.61   16.21 ~ 5 0
29 HD 64090 Pe* 07 53 33.1208795337 +30 36 18.256204963 8.75 8.86 8.25 7.70 7.30 K0:V_Fe-3 374 0
30 HD 74462 RG* 08 48 20.6518818744 +67 26 59.884515744   9.65 8.69 8.25   G5IV 140 0
31 NGC 2808 GlC 09 12 03.10 -64 51 48.6           ~ 1540 0
32 HD 83212 Pe* 09 36 19.9521173088 -20 53 14.747509716   9.582 9.177 7.83   G6/K0IIIwF7 144 0
33 HD 87140 PM* 10 04 43.1808079344 +54 20 43.425537648 9.70 9.68 8.98     K0 120 0
34 HD 94028 PM* 10 51 28.1256073369 +20 16 38.965439278 8.51 8.69 8.22 7.82 7.54 F8 375 0
35 HD 103095 Pe* 11 52 58.7673387755 +37 43 07.254113125 7.38 7.20 6.45 5.80 5.35 K1V_Fe-1.5 842 1
36 HD 105546 HB* 12 09 02.7215671248 +59 01 05.137388976   9.27 8.61 8.29   G2III: 120 0
37 HD 110885 * 12 45 19.2564778992 +01 03 21.095763876   9.76 9.12     F3V 65 0
38 HD 111721 RG* 12 51 25.1948519215 -13 29 28.166947989   8.78 7.97     G6V 175 0
39 2MASS J13262921-4731092 RG* 13 26 29.2177769400 -47 31 09.238524528   14.311 12.443   10.889 S 25 0
40 2MASS J13263222-4730564 RG* 13 26 32.2363006632 -47 30 56.461118616   14.486 12.847   11.437 ~ 7 0
41 2MASS J13263611-4730480 RG* 13 26 36.1231326144 -47 30 48.008215440   14.643     11.815 ~ 4 0
42 NGC 5139 GlC 13 26 47.28 -47 28 46.1           ~ 3677 0
43 NGC 5139 2118 RG* 13 26 49.9504136328 -47 36 41.876365788   14.374 13.086   12.096 ~ 13 0
44 2MASS J13265071-4737010 RG* 13 26 50.7174210264 -47 37 01.158926736   14.28 12.71   11.159 K5 51 0
45 HD 116811 RG* 13 26 53.3609740560 -47 36 35.006770080 15.91 13.880 12.267 12.09 10.837 A 22 0
46 HD 122956 Pe* 14 05 13.0244442888 -14 51 25.455804480   8.18 7.3 6.88   G6IV/VwF6 169 0
47 HD 141531 PM* 15 49 16.4993243976 +09 36 42.408069804   10.31 9.08 8.720   M1V 75 0
48 NGC 6121 314 RG* 16 23 04.3810595256 -26 23 43.069565040 14.75 13.303 11.817   10.100 ~ 41 0
49 NGC 6121 209 RG* 16 23 24.3734062920 -26 32 28.498772292 15.04 13.866 12.437   10.755 ~ 34 0
50 NGC 6121 154 RG* 16 23 26.9462895216 -26 31 31.372012704 15.06 13.898 12.485   10.788 ~ 37 0
51 Cl* NGC 6121 LEE 1619 RG* 16 23 31.4246685816 -26 33 11.109816900 14.67 13.259 11.744   9.982 ~ 20 0
52 M 4 GlC 16 23 35.22 -26 31 32.7           ~ 1978 0
53 NGC 6121 27 RG* 16 23 39.9822671376 -26 28 49.036544760 14.74 13.304 11.743   9.938 ~ 50 0
54 NGC 6121 237 RG* 16 23 46.3293066912 -26 32 27.251725560 14.83 13.586 12.145   10.480 ~ 27 0
55 2MASS J16235358-2634151 RG* 16 23 53.5834359408 -26 34 15.161300760 14.93 13.892 12.534   10.908 ~ 29 0
56 M 13 GlC 16 41 41.634 +36 27 40.75     5.8     ~ 2291 0
57 Cl* NGC 6397 GVS 1543 * 17 39 36.17 -53 40 20.7           ~ 5 0
58 Cl* NGC 6397 GVS 777 * 17 39 41.54 -53 37 13.6           ~ 2 0
59 Cl* NGC 6397 GVS 793 HB* 17 39 55.9063498560 -53 35 11.987646072   16.090 15.551   14.56 ~ 9 0
60 Cl* NGC 6397 GVS 1905 * 17 40 01.13 -53 35 56.9           ~ 5 0
61 Cl* NGC 6397 GVS 1622 * 17 40 09.0995847720 -53 43 26.481113472   16.596 16.200   15.622 ~ 7 0
62 Cl* NGC 6397 GVS 706 * 17 40 09.14 -53 42 08.9           ~ 2 0
63 Cl* NGC 6397 GVS 201432 * 17 40 16.0805487576 -53 47 18.740098536   16.669 16.278   15.708 ~ 7 0
64 Cl* NGC 6397 GVS 729 * 17 40 24.98 -53 43 31.9           ~ 2 0
65 Cl* NGC 6397 GVS 703 * 17 40 31.5884544360 -53 36 41.075612388           ~ 2 0
66 Cl* NGC 6397 GVS 206810 * 17 40 34.5834591072 -53 33 20.863550880   16.058 15.514   14.54 ~ 8 0
67 Cl* NGC 6397 GVS 760 * 17 40 35.94 -53 42 48.3           ~ 2 0
68 Cl* NGC 6397 GVS 737 * 17 40 38.80 -53 35 05.9           ~ 2 0
69 Cl* NGC 6397 GVS 202765 * 17 40 41.5970413368 -53 45 49.368731148   16.662 16.271   15.701 ~ 7 0
70 NGC 6397 GlC 17 40 42.09 -53 40 27.6     5.17     ~ 2103 0
71 Cl* NGC 6397 GVS 669 * 17 40 43.7537697168 -53 37 17.519866212   15.899 15.339   14.34 ~ 8 0
72 M 22 GlC 18 36 23.94 -23 54 17.1           ~ 1459 0
73 M 54 GlC 18 55 03.33 -30 28 47.5           ~ 1164 0
74 Cl* NGC 6752 GVS 1481 * 19 10 19.68 -60 01 27.8     15.95     ~ 6 0
75 Cl* NGC 6752 GVS 4661 * 19 10 20.98 -60 01 47.6     17.216     ~ 7 0
76 Cl* NGC 6752 GVS 1406 * 19 10 22.32 -60 03 19.7     15.90     ~ 6 0
77 Cl* NGC 6752 GVS 1460 * 19 10 23.82 -59 59 07.1     15.94     ~ 5 0
78 Cl* NGC 6752 GVS 4341 * 19 10 29.79 -59 57 52.7     17.149     ~ 6 0
79 Cl* NGC 6752 GVS 1400 * 19 10 31.6223599560 -59 59 34.640838168     15.89     ~ 5 0
80 NGC 6752 3 RG* 19 10 43.7198620272 -60 01 03.970293528   13.07 11.97     ~ 23 0
81 2MASS J19104538-5958011 RG* 19 10 45.3755127696 -59 58 01.227713988   13.140 12.049     ~ 13 0
82 NGC 6752 GlC 19 10 52.11 -59 59 04.4           ~ 2121 0
83 2MASS J19105326-6002037 RG* 19 10 53.2773937224 -60 02 03.672736152   13.06 12.060     ~ 30 0
84 2MASS J19105400-5959285 RG* 19 10 54.0144910272 -59 59 28.457876184   13.033 11.917     ~ 12 0
85 Cl* NGC 6752 GVS 202316 * 19 10 59.54 -59 54 00.4           ~ 6 0
86 Cl* NGC 6752 GVS 4428 * 19 10 59.8758025704 -60 02 17.122587576     17.142     ~ 14 0
87 2MASS J19110109-5957226 RG* 19 11 01.1111967360 -59 57 22.632070284   12.88 11.68     ~ 18 0
88 Cl* NGC 6752 CBG 15590 RG* 19 11 03.3124021056 -59 59 27.217653576   13.136 12.031     ~ 16 0
89 Cl* NGC 6752 GVS 1665 * 19 11 05.0159482728 -59 55 27.384044556     16.08     ~ 12 0
90 Cl* NGC 6752 GVS 1461 * 19 11 05.18 -60 01 51.2     15.95     ~ 6 0
91 Cl* NGC 6752 GVS 1445 * 19 11 05.44 -60 01 45.9     15.89     ~ 5 0
92 Cl* NGC 6752 GVS 202063 * 19 11 05.49 -59 54 28.7           ~ 4 0
93 Cl* NGC 6752 GVS 4383 * 19 11 13.3955107233 -60 02 24.334692211     17.112     ~ 12 0
94 Cl* NGC 6752 GVS 5048 * 19 11 19.9682198820 -59 59 50.467908818     16.10     ~ 10 0
95 Cl* NGC 6752 GVS 1563 * 19 11 21.3659942016 -59 59 51.012031020     16.06     ~ 6 0
96 Cl* NGC 6752 GVS 4907 * 19 11 22.87 -60 03 57.6     17.199     ~ 8 0
97 Cl* NGC 6752 CBG 30433 RG* 19 11 23.1820953552 -59 53 17.099323332   13.253 12.286 11.966   ~ 18 0
98 Cl* NGC 6752 GVS 4458 * 19 11 26.26 -60 00 48.7     17.155     ~ 6 0
99 Cl* NGC 6752 GVS 200613 * 19 11 35.7511814976 -59 58 02.021234016           ~ 11 0
100 HD 345957 PM* 20 10 48.1625876064 +23 57 54.510596568   9.36   8.6   G0V: 150 0
101 HD 194598 PM* 20 26 11.9183775668 +09 27 00.429558608 8.62 8.82 8.34 7.90 7.56 F8 315 0
102 HD 201891 Pe* 21 11 59.0321495469 +17 43 39.890919730 7.74 7.88 7.37 6.91 6.59 G5V_Fe-2.5 409 0
103 M 15 GlC 21 29 58.33 +12 10 01.2           ~ 3274 0
104 [LML2013] 30007210 RG* 21 40 00.83 -23 12 54.4     16.93   16.06 ~ 4 0
105 [CGB2013] NGC 7099 891 * 21 40 02.71 -23 11 46.6           ~ 3 0
106 2MASS J21402083-2312479 * 21 40 20.8233530808 -23 12 48.093742368           ~ 4 0
107 M 30 GlC 21 40 22.12 -23 10 47.5     7.10     ~ 1121 0
108 2MASS J21402239-2307140 RG* 21 40 22.3989255744 -23 07 14.117415708   17.473 16.826     ~ 5 0
109 2MASS J21402941-2314487 * 21 40 29.4113958192 -23 14 48.787491912           ~ 3 0
110 2MASS J21403920-2311058 * 21 40 39.2052756216 -23 11 05.960646276           ~ 4 0
111 2MASS J21404021-2310004 * 21 40 40.2206691720 -23 10 00.459038748           ~ 3 0
112 [CGB2013] NGC 7099 840 * 21 40 40.6913172696 -23 10 05.835636408           ~ 3 0
113 NAME Local Group GrG ~ ~           ~ 9325 0

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