2015ApJ...800....3C

Query : 2015ApJ...800....3C

2015ApJ...800....3C - Astrophys. J., 800, 3 (2015/February-2)

Light-element abundances of giant stars in the globular cluster M71 (NGC 6838).

CORDERO M.J., PILACHOWSKI C.A., JOHNSON C.I. and VESPERINI E.

Abstract (from CDS):

Aluminum is the heaviest light element displaying large star-to-star variations in Galactic globular clusters (GCs). This element may provide additional insight into the origin of the multiple populations, now known to be common place in GCs, and also the nature of the first-generation stars responsible for a cluster's chemical inhomogeneities. In a previous analysis, we found that unlike more metal-poor GCs, 47 Tuc did not exhibit a strong Na-Al correlation, which motivates a careful study of the similar metallicity but less massive GC M71. We present chemical abundances of O, Na, Al, and Fe for 33 giants in M71 using spectra obtained with the WIYN-Hydra spectrograph. Our spectroscopic analysis finds that similar to 47 Tuc and in contrast with more metal-poor GCs, M71 stars do not exhibit a strong Na-Al correlation and span a relatively narrow range in [Al/Fe], which are characteristics that GC formation models must reproduce.

Abstract Copyright: ∼

Journal keyword(s): globular clusters: individual: M71 - stars: abundances - stars: Population II

Simbad objects: 55

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Number of rows : 55
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 NGC 288 GlC 00 52 45.24 -26 34 57.4   10 8.13     ~ 1130 0
3 NGC 1851 GlC 05 14 06.76 -40 02 47.6           ~ 1529 0
4 NGC 2808 GlC 09 12 03.10 -64 51 48.6           ~ 1540 0
5 M 68 GlC 12 39 27.98 -26 44 38.6     7.96     ~ 1069 0
6 NGC 5139 GlC 13 26 47.28 -47 28 46.1           ~ 3677 0
7 M 3 GlC 13 42 11.62 +28 22 38.2     6.39     ~ 2593 0
8 M 5 GlC 15 18 33.22 +02 04 51.7     5.95     ~ 2095 0
9 M 80 GlC 16 17 02.41 -22 58 33.9           ~ 780 0
10 M 4 GlC 16 23 35.22 -26 31 32.7           ~ 1978 0
11 M 107 GlC 16 32 31.86 -13 03 13.6           ~ 835 0
12 M 13 GlC 16 41 41.634 +36 27 40.75     5.8     ~ 2291 0
13 M 12 GlC 16 47 14.18 -01 56 54.7     6.07     ~ 736 0
14 M 10 GlC 16 57 09.05 -04 06 01.1     4.98     ~ 857 0
15 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
16 Cl Terzan 5 Cl* 17 48 05.00 -24 46 48.0           ~ 948 1
17 NGC 6553 GlC 18 09 15.68 -25 54 27.9   9.08       ~ 644 0
18 M 54 GlC 18 55 03.33 -30 28 47.5           ~ 1164 0
19 NGC 6752 GlC 19 10 52.11 -59 59 04.4           ~ 2121 0
20 M 55 GlC 19 39 59.71 -30 57 53.1     6.49     ~ 913 0
21 Cl* NGC 6838 KC 130 RG* 19 53 34.2843653668 +18 46 55.045312000   16.29 15.01     ~ 11 0
22 Cl* NGC 6838 AH A9 RG* 19 53 37.4728877088 +18 44 59.689600692   14.51 12.94     ~ 67 0
23 Cl* NGC 6838 KC 22 * 19 53 39.5 +18 44 03   15.30 13.93     ~ 9 0
24 Cl* NGC 6838 AH S RG* 19 53 39.8690554440 +18 43 52.997623356   14.45 12.94     ~ 58 0
25 Cl* NGC 6838 KC 118 HB* 19 53 40.5666632784 +18 49 07.862318904   15.63 14.55     ~ 8 0
26 NGC 6838 1062 HB* 19 53 40.6116471000 +18 48 28.448574192   15.72 14.56     ~ 10 0
27 2MASS J19534103+1846056 AB* 19 53 41.0341710408 +18 46 05.602037268   14.63 13.39     ~ 39 0
28 Cl* NGC 6838 ZDA 4 HB* 19 53 41.0927344968 +18 44 11.215233456   15.47 14.40     ~ 26 0
29 NGC 6838 1075 RG* 19 53 41.5726140216 +18 47 43.035846108   16.14 14.85     ~ 35 0
30 2MASS J19534288+1846374 AB* 19 53 42.8853219792 +18 46 37.466827572   14.83 13.70     ~ 20 0
31 NGC 6838 1068 RG* 19 53 44.0666429376 +18 47 10.397134500   15.64 14.33     ~ 9 0
32 2MASS J19534477+1846349 AB* 19 53 44.7709947960 +18 46 34.989387348   13.99 12.42     ~ 31 0
33 NGC 6838 1088 HB* 19 53 44.8073521615 +18 45 48.619543833   15.25 14.26     ~ 9 0
34 NGC 6838 1101 HB* 19 53 44.9624054544 +18 46 19.454090412   15.27 14.27     ~ 5 0
35 NGC 6838 1058 * 19 53 45.22 +18 48 38.3   16.21 14.88     ~ 6 0
36 NGC 6838 1113 RG* 19 53 45.7626197880 +18 47 55.013762796   14.255 12.482     ~ 30 0
37 NGC 6838 1064 RG* 19 53 46.1566912560 +18 47 26.146446540   14.634 13.132   11.616 ~ 43 0
38 M 71 GlC 19 53 46.49 +18 46 45.1           ~ 1190 0
39 NGC 6838 1003 RG* 19 53 46.72848 +18 45 00.5904   15.58 14.38     ~ 6 0
40 Cl* NGC 6838 AH H RG* 19 53 47.4715171200 +18 46 51.158511948   14 12.140   10.098 ~ 11 0
41 2MASS J19534750+1846169 AB* 19 53 47.5108324968 +18 46 17.016728880   14.51 13.02     ~ 53 0
42 NGC 6838 1045 RG* 19 53 48.2738208408 +18 48 02.321225604   14.080 12.346   10.657 ~ 58 0
43 2MASS J19534828+1848253 AB* 19 53 48.2880658344 +18 48 25.408651716   14.62 13.25     ~ 20 0
44 2MASS J19534905+1846003 AB* 19 53 49.0521804168 +18 46 00.313651704   14.56 13.29     ~ 41 0
45 NGC 6838 1111 RG* 19 53 50.1888910056 +18 45 52.565276844   16.023 14.914     ~ 15 0
46 NGC 6838 1033 HB* 19 53 50.4339236592 +18 47 05.624025504   15.34 14.31     ~ 9 0
47 NGC 6838 1053 RG* 19 53 50.6409291720 +18 49 07.531926240   14.58 12.97   11.527 ~ 67 0
48 NGC 6838 1051 RG* 19 53 51.2031871344 +18 48 30.957112548   15.62 14.391   13.109 ~ 12 0
49 NGC 6838 1046 RG* 19 53 51.5034366408 +18 48 06.095443860   13.955 12.332 11.804   M0: 39 0
50 NGC 6838 1001 RG* 19 53 52.3670642088 +18 44 54.189746376   15.309 14.130     ~ 25 0
51 Cl* NGC 6838 ZDA 18 RG* 19 53 53.2569747960 +18 46 47.152843176   13.89 12.20     ~ 68 0
52 NGC 6838 1050 HB* 19 53 53.7265322640 +18 48 41.989483044   15.56 14.46     ~ 9 0
53 2MASS J19535507+1845344 AB* 19 53 55.0743072192 +18 45 34.482749544   15.03 13.77     ~ 12 0
54 2MASS J19535764+1847570 RG* 19 53 57.6464656104 +18 47 57.076716552   14.896 13.563   12.167 ~ 21 0
55 M 30 GlC 21 40 22.12 -23 10 47.5     7.10     ~ 1121 0

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