J/A+A/602/A89 Star clusters in the Magellanic Clouds (Perren+, 2017)
Astrophysical properties of star clusters in the Magellanic Clouds
homogeneously estimated by ASteCA.
Perren G.I., Piatti A.E., Vazquez R.A.
<Astron. Astrophys. 602, A89 (2017)>
=2017A&A...602A..89P 2017A&A...602A..89P (SIMBAD/NED BibCode)
ADC_Keywords: Magellanic Clouds ; Clusters, open; Clusters, globular ;
Photometry, CCD
Keywords: galaxies: fundamental parameters -
galaxies: star clusters: general - Magellanic Clouds -
methods: statistical - catalogs - techniques: photometric
Abstract:
To produce an homogeneous catalog of astrophysical parameters of 239
resolved star clusters located in the Small and Large Magellanic
Clouds, observed in the Washington photometric system.
The cluster sample was processed with the recently introduced
Automated Stellar Cluster Analysis (ASteCA) package, which ensures
both an automatized and a fully reproducible treatment, together with
a statistically based analysis of their fundamental parameters and
associated uncertainties. The fundamental parameters determined with
this tool for each cluster, via a color-magnitude diagram (CMD)
analysis, are: metallicity, age, reddening, distance modulus, and
total mass.
We generated an homogeneous catalog of structural and fundamental
parameters for the studied cluster sample, and performed a detailed
internal error analysis along with a thorough comparison with values
taken from twenty-six published articles. We studied the distribution
of cluster fundamental parameters in both Clouds, and obtained their
age-metallicity relationships.
The ASteCA package can be applied to an unsupervised determination of
fundamental cluster parameters; a task of increasing relevance as more
data becomes available through upcoming surveys.
Description:
Fundamental parameters for 150 Large Magellanic Cloud and 89 Small
Magellanic Cloud clusters. All clusters were analyzed via C,T1
Washington photometry by the ASteCA package.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
clusters.dat 100 239 Fundamental parameters for 239 Magellanic Clouds
star clusters
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Byte-by-byte Description of file: clusters.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Name Star cluster name
10- 12 A3 --- Galaxy [LMC SMC] Magellanic Cloud identification
14- 26 F13.9 deg RAdeg Right ascension J2000 (decimal degrees)
28- 40 F13.9 deg DEdeg Declination J2000 (decimal degrees)
42- 45 F4.1 pc Radius Adopted radius in parsecs
47- 51 F5.2 --- [Fe/H] Metallicity (1)
53- 56 F4.2 --- e_[Fe/H] Metallicity error
58- 61 F4.2 [yr] log(Age) Logarithm of age
63- 66 F4.2 [yr] e_log(Age) Logarithmic age error
68- 72 F5.3 mag E(B-V) E(B-V) extinction
74- 78 F5.3 mag e_E(B-V) E(B-V) extinction error
80- 84 F5.2 mag mu0 Distance modulus
86- 89 F4.2 mag emu0 Distance modulus error
91- 95 I5 Msun Mass Mass
97-100 I4 Msun e_Mass Mass error
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Note (1): Solar metallicity adopted is z=0.0152 following Bressan et
al. (2012MNRAS.427..127B 2012MNRAS.427..127B)
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Acknowledgements:
Gabriel I. Perren, gabrielperren(at)gmail.com
References:
Perren et al., ASteCA: Automated Stellar Cluster Analysis, 2015A&A...576A...6P 2015A&A...576A...6P
(End) Gabriel I. Perren [IALP, Argentina], Patricia Vannier [CDS] 07-Feb-2017