2021AJ....161..199P


Query : 2021AJ....161..199P

2021AJ....161..199P - Astron. J., 161, 199-199 (2021/April-0)

Revisiting newly Large Magellanic Cloud age-gap star clusters.

PIATTI A.E.

Abstract (from CDS):

Recently, a noticeable number of new star clusters was identified in the outskirts of the Large Magellanic Cloud (LMC) populating the so-called star-cluster age gap, a space of time (∼4-12 Gyr) where the only known star cluster is up-to-date ESO 121-SC 03. We used Survey of the Magellanic Stellar History DR2 data sets, as well as those employed to identify these star-cluster candidates, to produce relatively deep color-magnitude diagrams (CMDs) of 17 out of 20 discovered age-gap star clusters with the aim of investigating them in detail. Our analysis relies on a thorough CMD cleaning procedure of the field-star contamination, which presents variations in its stellar density and astrophysical properties, such as luminosity and effective temperature, around the star-cluster fields. We built star-cluster CMDs from stars with membership probabilities assigned from the cleaning procedure. These CMDs and their respective spatial distribution maps favor the existence of LMC star field density fluctuations rather than age-gap star clusters, although a definitive assessment on them will be possible from further deeper photometry.

Abstract Copyright: © 2021. The American Astronomical Society. All rights reserved.

Journal keyword(s): Astronomical methods - Large Magellanic Cloud - Star clusters

Simbad objects: 7

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Number of rows : 7
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 SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
2 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 7988 0
3 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
4 ESO 86-22 Cl* 05 42 29.090 -65 21 46.33     13.8     ~ 44 0
5 NGC 2121 Cl* 05 48 13.190 -71 28 52.00   13.21 12.37     ~ 134 0
6 NGC 2155 Cl* 05 58 32.070 -65 28 38.62   13.41 12.60     ~ 107 0
7 NAME ESO 121-SC 03 GlC ~ ~           ~ 7 0

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