2018MNRAS.476..690P


Query : 2018MNRAS.476..690P

2018MNRAS.476..690P - Mon. Not. R. Astron. Soc., 476, 690-704 (2018/May-1)

Chemical analysis of eight giant stars of the globular cluster NGC 6366.

PULS A.A., ALVES-BRITO A., CAMPOS F., DIAS B. and BARBUY B.

Abstract (from CDS):

The metal-rich Galactic globular cluster NGC 6366 is the fifth closest to the Sun. Despite its interest, it has received scarce attention, and little is known about its internal structure. Its kinematics suggests a link to the halo, but its metallicity indicates otherwise. We present a detailed chemical analysis of eight giant stars of NGC 6366, using high-resolution and high-quality spectra (R > 40 000, S/N > 60) obtained at the VLT (8.2 m) and CFHT (3.6 m) telescopes. We attempted to characterize its chemistry and to search for evidence of multiple stellar populations. The atmospheric parameters were derived using the method of excitation and ionization equilibrium of Fe I and Fe II lines and from those atmospheric parameters we calculated the abundances for other elements and found that none of the elements measured presents star-to-star variation greater than the uncertainties. We compared the derived abundances with those of other globular clusters and field stars available in the literature. We determined a mean [Fe/H] = -0.60 ± 0.03 for NGC 6366 and found some similarity of this object with M 71, another inner halo globular cluster. The Na-O anticorrelation extension is short and no star-to-star variation in Al is found. The presence of second generation stars is not evident in NGC 6366.

Abstract Copyright: © 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): stars: abundances - Galaxy: abundances - globular clusters: individual: NGC 6366

Simbad objects: 27

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Number of rows : 27
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 NGC 104 GlC 00 24 05.359 -72 04 53.20   5.78 4.09     ~ 3752 0
2 NGC 2808 GlC 09 12 03.10 -64 51 48.6           ~ 1346 0
3 NGC 5139 GlC 13 26 47.28 -47 28 46.1   6.12 5.33     ~ 3266 0
4 M 62 GlC 17 01 12.60 -30 06 44.5   8.55 7.39     ~ 570 0
5 NGC 6342 GlC 17 21 10.14 -19 35 14.7   11.25 10.01     ~ 268 0
6 2MASS J17272694-0503173 * 17 27 26.9414529624 -05 03 17.415924264     15.713     ~ 1 0
7 2MASS J17273417-0501102 * 17 27 34.1794874256 -05 01 10.304738436     15.858     ~ 1 0
8 2MASS J17274084-0502028 * 17 27 40.8458806824 -05 02 02.959720332     15.650     ~ 1 0
9 Cl* NGC 6366 P 311 * 17 27 43.5698923896 -05 06 29.849617620   16.11 14.303     ~ 2 0
10 NGC 6366 GlC 17 27 44.24 -05 04 47.5           ~ 287 0
11 Cl* NGC 6366 P 118 * 17 27 44.5242201600 -05 02 37.222148904   16.58 14.697     ~ 3 0
12 2MASS J17275470-0501548 * 17 27 54.7119608112 -05 01 54.947309664     15.807     ~ 1 0
13 2MASS J17275778-0508149 * 17 27 57.7928295624 -05 08 14.918111736     15.607     ~ 1 0
14 2MASS J17275825-0504286 * 17 27 58.2639942096 -05 04 28.612045380     15.731     ~ 1 0
15 NGC 6362 GlC 17 31 54.99 -67 02 54.0   9.72 8.86     ~ 542 0
16 NGC 6388 GlC 17 36 17.461 -44 44 08.34   7.40       ~ 868 1
17 NGC 6397 GlC 17 40 42.09 -53 40 27.6     5.17     ~ 1894 1
18 NGC 6441 GlC 17 50 13.06 -37 03 05.2   9.26 8.00     ~ 836 0
19 NAME Baade Window reg 18 03.5 -30 01           ~ 580 3
20 NGC 6522 GlC 18 03 34.08 -30 02 02.3   10.68 9.48     ~ 499 1
21 NGC 6528 GlC 18 04 49.61 -30 03 20.8   12.12 10.65     ~ 502 0
22 NGC 6553 GlC 18 09 15.68 -25 54 27.9   9.08       ~ 577 0
23 NGC 6558 GlC 18 10 18.38 -31 45 48.6   12.39 11.29     ~ 210 0
24 NAME Mercer 5 Cl* 18 23 19.800 -13 40 07.00           ~ 19 0
25 NGC 6723 GlC 18 59 33.15 -36 37 56.1           ~ 473 0
26 M 71 GlC 19 53 46.49 +18 46 45.1   7.91 6.1     ~ 1079 0
27 M 15 GlC 21 29 58.33 +12 10 01.2   3       ~ 3039 0

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2022.10.06-18:34:26

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