Bulletin de la Société Royale des Sciences de Liège

0037-9565 1783-5720

 

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Sneh Lata, Athul Dileep, Devesh Path Sariya, Santosh Joshi, Neelam Panwar, Ramakant Singh Yadav & Dorothy Museo Mwanzia

Detection of Variable Stars in the Galactic Globular Cluster M15

(Volume 93 - Année 2024 — No 2 - Proceeedings of the 3rd BINA Workshop on the Scientific Potential of the Indo-Belgian Cooperation)
DOI: 10.25518/0037-9565.11694
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Open Access

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Abstract

This study reports the discovery of 12 new variable stars in the globular cluster M15 using time series observations from 3.6 m DOT and 2 m class HCT. In total, 198 variable stars were detected in the cluster region, including both known and newly discovered variables. Proper motion data from Gaia EDR3 were used to determine the membership of the identified variable stars. The seven of the new variables are found to be probable members of the cluster. Based on variability characteristics and location in the CMD, two of them are likely RR Lyrae type variables. The majority of the known variables are found to be RR Lyrae type variables.

Keywords : globular cluster M15, variable stars, RR Lyare

Para citar este artículo

Sneh Lata, Athul Dileep, Devesh Path Sariya, Santosh Joshi, Neelam Panwar, Ramakant Singh Yadav & Dorothy Museo Mwanzia, «Detection of Variable Stars in the Galactic Globular Cluster M15», Bulletin de la Société Royale des Sciences de Liège [En ligne], Volume 93 - Année 2024, No 2 - Proceeedings of the 3rd BINA Workshop on the Scientific Potential of the Indo-Belgian Cooperation, 315-326 URL : https://popups.uliege.be/0037-9565/index.php?id=11694.

Acerca de: Sneh Lata

Aryabhatta Research Institute of Observational Sciences (ARIES), Nainital - 263 001, Uttarakhand, India. Corresponding author: sneh@aries.res.in

Acerca de: Athul Dileep

Aryabhatta Research Institute of Observational Sciences (ARIES), Nainital - 263 001, Uttarakhand, India

Acerca de: Devesh Path Sariya

Department of Physics and Institute of Astronomy, National Tsing Hua University, Hsin-Chu, Taiwan

Acerca de: Santosh Joshi

Aryabhatta Research Institute of Observational Sciences (ARIES), Nainital - 263 001, Uttarakhand, India

Acerca de: Neelam Panwar

Aryabhatta Research Institute of Observational Sciences (ARIES), Nainital - 263 001, Uttarakhand, India

Acerca de: Ramakant Singh Yadav

Aryabhatta Research Institute of Observational Sciences (ARIES), Nainital - 263 001, Uttarakhand, India

Acerca de: Dorothy Museo Mwanzia

University of Nairobi, Faculty of Science and Technology, Department of Physics, Nairobi, Kenya and S. N. Bose National Center for Basic Sciences, Department of Science and Technology, Kolkata, India