2023AJ....165..213P

Query : 2023AJ....165..213P

2023AJ....165..213P - Astron. J., 165, 213 (2023/May-0)

The Origin of the Large Magellanic Cloud Globular Cluster NGC 2005.

PIATTI A.E. and HIRAI Y.

Abstract (from CDS):

The ancient Large Magellanic Cloud (LMC) globular cluster NGC 2005 has recently been reported to have an ex situ origin, thus, setting precedents that the LMC could have partially formed from smaller merged dwarf galaxies. We here provide additional arguments from which we conclude that is also fairly plausible an in situ origin of NGC 2005, based on the abundance spread of a variety of chemical elements measured in dwarf galaxies, their minimum mass in order to form globular clusters, the globular cluster formation imprints kept in their kinematics, and the recent modeling showing that explosions of supernovae are responsible for the observed chemical abundance spread in dwarf galaxies. The present analysis points to the need for further development of numerical simulations and observational indices that can help us to differentiate between two mechanisms of galaxy formation for the LMC; namely, a primordial dwarf or an initial merging event of smaller dwarfs.

Abstract Copyright: © 2023. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Large Magellanic Cloud - Globular star clusters

Simbad objects: 16

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Number of rows : 16
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 NAME Sculptor Dwarf Galaxy G 01 00 09.4 -33 42 32   9.79 8.6 8.81   ~ 1498 4
2 MCG-06-07-001 G 02 39 59.3 -34 26 57   9.02 7.4     ~ 1894 1
3 NGC 1786 Cl* 04 59 07.470 -67 44 45.44   10.1       ~ 152 0
4 NGC 1835 Cl* 05 05 09.210 -69 24 20.96   11.314 10.596     ~ 173 0
5 NGC 1916 Cl* 05 18 37.87 -69 24 22.9   11.16 10.38     ~ 94 0
6 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
7 NGC 2005 Cl* 05 30 08.500 -69 45 14.42   12.30 11.57     ~ 103 0
8 NGC 2210 GlC 06 11 31.296 -69 07 17.04   10.9 10.94     ~ 196 0
9 NGC 2257 Cl* 06 30 12.62 -64 19 40.0   13.24 12.62     ~ 228 0
10 ESO 206-20A G 06 41 36.7 -50 57 58   22.14 11.0 19.47   ~ 1190 0
11 NAME Sextans dSph LSB 10 13 02.9 -01 36 53   12 10.4     ~ 921 0
12 Z 318-18 G 15 09 08.0 +67 13 21   13.60 10.6     ~ 1459 0
13 Z 300-12 G 17 20 14.335 +57 55 16.39   12.40 10.6     ~ 1428 1
14 NAME Sequoia Cluster GlC 17 31 12.0 -39 48 30           ~ 154 0
15 NAME SDG G 18 55 19.0 -30 32 43   4.5 3.6     ~ 2438 2
16 NAME Gaia Enceladus-Sausage St* ~ ~           ~ 860 0

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