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Gaurav Singh & Ramakant Singh Yadav

Proper Motion study of globular cluster NGC 4590

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Mots-clés : agglomérats, astrométrie, astronomie, astrophysique, étoiles, photométrie

Abstract

The similar age of the stars in star cluster system makes them interesting objects for the study of stellar evolution. However, for such studies, it is essential to reduce the field star contamination. Proper motion of the stars in the region of star clusters provides a unique possibility of getting membership information of the stars. The mean absolute proper motion of the globular cluster NGC 4590 is derived as -2.95 ± 0.54 mas yr-1 and 2.03 ± 0.52 mas yr-1 along right ascension (RA) and declination (DEC) respectively using, 111,000 stars having an error less than 7 mas yr-1. We propose a similar study of globular clusters with the CCD imager mounted on the 3.6m Devasthal Optical telescope (DOT).

Keywords : astrometry, astronomy, astrophysics, clusters, photometry, stars

To cite this article

Gaurav Singh & Ramakant Singh Yadav, «Proper Motion study of globular cluster NGC 4590», Bulletin de la Société Royale des Sciences de Liège [En ligne], Volume 87 - Année 2018, Actes de colloques, First Belgo-Indian Network for Astronomy & Astrophysics (BINA) workshop - November 2016 - Nainital, India, 238 - 241 URL : https://popups.uliege.be:443/0037-9565/index.php?id=7669.

About: Gaurav Singh

Aryabhatta Research Institute of observational sciencES (ARIES), Manora Peak Nainital 263001, India

About: Ramakant Singh Yadav

Aryabhatta Research Institute of observational sciencES (ARIES), Manora Peak Nainital 263001, rkant@aries.res.in