RR Lyrae Stars in the Globular Cluster Palomar 2

dc.contributor.author	Ferro, A. Arellano
dc.contributor.author	Fierro, Bustos
dc.contributor.author	Muneer, S
dc.contributor.author	Giridhar, S
dc.date.accessioned	2023-05-04T05:40:43Z
dc.date.available	2023-05-04T05:40:43Z
dc.date.issued	2023-04
dc.identifier.citation	Revista Mexicana de Astronomia y Astrofisica, Vol. 59. pp. 3-10	en_US
dc.identifier.issn	0185-1101
dc.identifier.uri	http://hdl.handle.net/2248/8195
dc.description	Restricted Access	en_US
dc.description.abstract	A CCD VI imaging time-series over 11-year is employed to explore the light curves of stars in the field of Palomar 2. We discovered 20 RRab and 1 RRc variables. A revision of Gaia-DR3 data enabled us to identify 10 more variables and confirm the RRab nature of 6 of them and one RGB. The cluster membership is discussed, and 18 variables are most likely cluster members. The Fourier light curve decomposition for the 11 best quality light curves of cluster member stars leads to independent estimates of the cluster distance 27.2 ± 1.8 kpc and [Fe/H]ZW = −1.39 ± 0.55. We confirm the cluster as of the Oo I type.	en_US
dc.language.iso	en	en_US
dc.publisher	Universidad Nacional Autonoma De Mexico	en_US
dc.relation.uri	https://doi.org/10.22201/ia.01851101p.2023.59.01.01
dc.rights	© 2023 Instituto de Astronomia, Universidad Nacional Autonoma de Mexico
dc.subject	Globular clusters: individual: Pal 2	en_US
dc.subject	Stars: variables: RR Lyrae	en_US
dc.title	RR Lyrae Stars in the Globular Cluster Palomar 2	en_US
dc.type	Article	en_US