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Detection of extended Red Clump in the SMC cluster Kron 3

Published online by Cambridge University Press:  11 March 2020

P. K. Nayak Open the ORCID record for P. K. Nayak [Opens in a new window] ,
A. Subramaniam ,
S. Subramanian ,
S. Sahu Open the ORCID record for S. Sahu [Opens in a new window] ,
C. Mondal ,
Maria-Rosa L. Cioni  and
C. Bell
P. K. Nayak
Affiliation:
Indian Institute of Astrophysics, Koramangala, Bangalore, 560034, India email: nayakphy@gmail.com Pondicherry University, R. Venkataraman Nagar, Kalapet, Pondicherry-605014, India
A. Subramaniam
Affiliation:
Indian Institute of Astrophysics, Koramangala, Bangalore, 560034, India email: nayakphy@gmail.com
S. Subramanian
Affiliation:
Indian Institute of Astrophysics, Koramangala, Bangalore, 560034, India email: nayakphy@gmail.com
S. Sahu
Affiliation:
Indian Institute of Astrophysics, Koramangala, Bangalore, 560034, India email: nayakphy@gmail.com Pondicherry University, R. Venkataraman Nagar, Kalapet, Pondicherry-605014, India
C. Mondal
Affiliation:
Indian Institute of Astrophysics, Koramangala, Bangalore, 560034, India email: nayakphy@gmail.com Pondicherry University, R. Venkataraman Nagar, Kalapet, Pondicherry-605014, India
Maria-Rosa L. Cioni
Affiliation:
Leibniz-Institute for Astrophysics Potsdam (AIP), An der Sternwarte 16, D-14482 Potsdam, Germany
C. Bell
Affiliation:
Leibniz-Institute for Astrophysics Potsdam (AIP), An der Sternwarte 16, D-14482 Potsdam, Germany
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Abstract

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For the first time, we report the identification of NUV bright red clump (RC) stars and the extension of RC stars over two magnitudes both in color and magnitude axis in NUV vs (NUV – optical) color magnitude diagram. We find that the extension of RC is not due to photometric uncertainties. We suggest that the extension could be an effect of field star contamination. We also suggest that if it is an intrinsic property of the cluster then age and/or metallicity spread within the cluster could be the possible reasons for extended RC.

Keywords

(galaxies:) Magellanic Cloudsgalaxies: star clusters(stars:)- ultraviolet: stars
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S351: Star Clusters: From the Milky Way to the Early Universe , May 2019 , pp. 135 - 138
Copyright
© International Astronomical Union 2020

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