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Parameterization of star clusters in the Magellanic Clouds using Gaia DR3

Published online by Cambridge University Press:  30 October 2025

S. R. Dhanush Open the ORCID record for S. R. Dhanush [Opens in a new window] ,
Annapurni Subramaniam ,
Prasanta Nayak Open the ORCID record for Prasanta Nayak [Opens in a new window]  and
Smitha Subramanian
S. R. Dhanush*
Affiliation:
Indian Institute of Astrophysics, Koramangala, Bangalore, India Pondicherry University, R.V.Nagar. kalapet, Puducherry, India
Annapurni Subramaniam
Affiliation:
Indian Institute of Astrophysics, Koramangala, Bangalore, India
Prasanta Nayak
Affiliation:
Institute of Astrophysics- PUC, Santiago, Chile
Smitha Subramanian
Affiliation:
Indian Institute of Astrophysics, Koramangala, Bangalore, India
*
email: dhanush.sr@iiap.res.in
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Abstract

We have introduced a quantitative and automated method to parameterize star clusters in the Magellanic Clouds (MCs) using the Gaia DR3 data. We used the existing cluster catalogs and extracted their Gaia DR3 data and nearby field regions. We automated the Field Star Decontamination (FSD) algorithm with multiple annular field regions for isolated clusters. We estimated the LMC and SMC clusters’ age, extinction, distance modulus, and metallicity using a Bayesian approach. We expect to parameterize many clusters in the outer LMC with the help of the wide coverage of the Gaia data. We aim to identify correlated cluster formation episodes between the MCs, thereby throwing light on their interaction history. Here we present the preliminary results of this study.

Keywords

galaxies: star clustersMagellanic CloudsField Star Decontaminationcluster parameters

Information

Type
Poster Paper
Information
Proceedings of the International Astronomical Union , Volume 19 , Symposium S379: Dynamical Masses of Local Group Galaxies , December 2023 , pp. 226 - 230
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Copyright
© The Author(s), 2025. Published by Cambridge University Press on behalf of International Astronomical Union

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