RR LYRAE STARS IN THE GLOBULAR CLUSTER PALOMAR 2

被引：1
|
作者：
Arellano Ferro, A. [1 ]
Bustos Fierro, I. [2 ]
Muneer, S. [3 ]
Giridhar, S. [3 ]
机构：
[1] Univ Nacl Autonoma Mexico, Inst Astron, Mexico City, DF, Mexico
[2] Univ Nacl Cordoba, Observ Astron, Cordoba, Argentina
[3] Indian Inst Astrophys, Bangalore, Karnataka, India
来源：
REVISTA MEXICANA DE ASTRONOMIA Y ASTROFISICA | 2023年 / 59卷 / 01期
关键词：
globular clusters: individual: Pal 2; stars: variables: RR Lyrae; VARIABLE-STARS; CATALOG;
D O I：
10.22201/ia.01851101p.2023.59.01.01
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
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.
引用
收藏
页码：3 / 10
页数：8
相关论文
共 50 条
  • [1] RR Lyrae stars in the globular cluster NGC 6304
    Valenti, E
    Bellazzini, M
    Cacciari, C
    NEW HORIZONS IN GLOBULAR CLUSTER ASTRONOMY, 2003, 296 : 404 - 405
  • [2] Globular cluster distances from RR Lyrae stars
    Cacciari, C
    Clementini, G
    STELLAR CANDLES FOR THE EXTRAGALACTIC DISTANCE SCALE, 2003, 635 : 105 - 122
  • [3] RR Lyrae Stars in the Globular Cluster NGC 6101
    Fitzgerald, M. T.
    Criss, J.
    Lukaszewicz, T.
    Frew, D. J.
    Catelan, M.
    Woodward, S.
    Danaia, L.
    McKinnon, D. H.
    PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF AUSTRALIA, 2012, 29 (01): : 72 - 77
  • [4] RR Lyrae stars in the southern globular cluster NGC 362
    Szekely, P.
    Kiss, L. L.
    Jackson, R.
    Derekas, A.
    Csak, B.
    Szatmary, K.
    ASTRONOMY & ASTROPHYSICS, 2007, 463 (02) : 589 - U75
  • [5] RR Lyrae stars in Globular clusters
    Walker, AR
    IMPACT OF LARGE-SCALE SURVEYS ON PULSATING STAR RESEARCH, 2000, 203 : 165 - 171
  • [6] DOUBLE-MODE RR LYRAE STARS IN THE GLOBULAR-CLUSTER
    PURDUE, P
    SILBERMANN, NA
    GAY, P
    SMITH, HA
    ASTRONOMICAL JOURNAL, 1995, 110 (04): : 1712 - 1721
  • [7] RR Lyrae Stars Belonging to the Candidate Globular Cluster Patchick 99
    Butler, Evan
    Kunder, Andrea
    Prudil, Zdenek
    Covey, Kevin R.
    Ball, Macy
    Campos, Carlos
    Gollnick, Kaylen
    Carvajal, Julio Olivares
    Hughes, Joanne
    Devine, Kathryn
    Johnson, Christian I.
    Vivas, A. Katherina
    Rich, R. Michael
    Joyce, Meridith
    Simion, Iulia T.
    Marchetti, Tommaso
    Koch-Hansen, Andreas J.
    Clarkson, William I.
    Kuss, Rebekah
    ASTROPHYSICAL JOURNAL LETTERS, 2024, 963 (01)
  • [8] ON THE MODULATION OF RR LYRAE STARS IN THE GLOBULAR CLUSTER M3
    Jurcsik, J.
    Smitola, P.
    Hajdu, G.
    Nuspl, J.
    ASTROPHYSICAL JOURNAL LETTERS, 2014, 797 (01)
  • [9] RR Lyrae variables in the globular cluster M55. The first evidence for nonradial pulsations in RR Lyrae stars
    Olech, A
    Kaluzny, J
    Thompson, IB
    Pych, W
    Krzeminski, W
    Shwarzenberg-Czerny, A
    ASTRONOMICAL JOURNAL, 1999, 118 (01): : 442 - 452
  • [10] METAL ABUNDANCE OF RR LYRAE STARS IN THE GLOBULAR CLUSTER M4
    SMITH, HA
    BUTLER, D
    PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC, 1979, 90 (538) : 671 - 674
12345