2MASS photometry and kinematical studies of open cluster NGC 188

被引：15

作者：

Elsanhoury, W. H. ^{[1
,2
]}

Haroon, A. A. ^{[1
,3
]}

Chupina, N. V. ^{[4
]}

Vereshchagin, S. V. ^{[4
]}

Sariya, Devesh P. ^{[5
,6
]}

Yadav, R. K. S. ^{[7
]}

Jiang, Ing-Guey ^{[5
,6
]}

机构：

[1] Natl Res Inst Astron & Geophys, Dept Astron, Cairo 11421, Egypt

[2] Northern Border Univ, Rafha Branch, Dept Phys, Fac Sci, Ar Ar, Saudi Arabia

[3] King Abdulaziz Univ, Dept Astron, Fac Sci, Jeddah, Saudi Arabia

[4] Inst Astron Russian Acad Sci INASAN, 48 Pyatnitskaya St, Moscow, Russia

[5] Natl Tsing Hua Univ, Dept Phys, Hsinchu, Taiwan

[6] Natl Tsing Hua Univ, Inst Astron, Hsinchu, Taiwan

[7] Aryabhatta Res Inst Observat Sci ARIES, Naini Tal 263002, India

来源：

NEW ASTRONOMY | 2016年 / 49卷

基金：

美国国家科学基金会; 美国国家航空航天局; 俄罗斯基础研究基金会;

关键词：

Open clusters; Color-magnitude diagram; Kinematics; AD diagram; WIYN OPEN CLUSTER; OLD OPEN CLUSTERS; RADIAL-VELOCITIES; BLUE STRAGGLERS; PROPER MOTIONS; CCD PHOTOMETRY; STAR-CLUSTERS; NGC-188; M67; MEMBERSHIP;

D O I：

10.1016/j.newast.2016.06.002

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In this paper, we present our results for the photometric and kinematical studies of old open cluster NGC 188. We determined various astrophysical parameters like limited radius, core and tidal radii, distance, luminosity and mass functions, total mass, relaxation time etc. for the duster using 2MASS catalog. We obtained the cluster's distance from the Sun as 1721 +/- 41 pc and log (age). 9.85 +/- 0.05 at Solar metallicity. The relaxation time of the cluster is smaller than the estimated cluster age which suggests that the cluster is dynamically relaxed. Our results agree with the values mentioned in the literature. We also determined the clusters apex coordinates as (281 degrees.88, -44 degrees.76) using AD-diagram method. Other kinematical parameters like space velocity components, cluster center and elements of Solar motion etc. have also been computed. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：32 / 37

页数：6

共 46 条

[1] Theoretical isochrones compared to 2MASS observations: Open clusters at nearly solar metallicity
Bonatto, C
Bica, E
Girardi, L
[J]. ASTRONOMY & ASTROPHYSICS, 2004, 415 (02) : 571 - 576
[2] Spatial dependence of 2MASS luminosity and mass functions in the old open cluster NGC 188
Bonatto, C
Bica, E
Santos, JFC
[J]. ASTRONOMY & ASTROPHYSICS, 2005, 433 (03) : 917 - 929
[3] Color transformations for the 2MASS Second Incremental Data Release
Carpenter, JM
[J]. ASTRONOMICAL JOURNAL, 2001, 121 (05) : 2851 - 2871
[4] CARRARO G, 1994, ASTRON ASTROPHYS, V288, P751
[5] Numerical simulations of tidal tails for the open cluster NGC 188
Chumak, Yaroslav O.
Platais, Imants
McLaughlin, Dean E.
Rastorguev, Alex S.
Chumak, Oleg V.
[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2010, 402 (03) : 1841 - 1853
[6] Kinematic structure of the corona of the Ursa Major flow found using proper motions and radial velocities of single stars
Chupina, NV
Reva, VG
Vereshchagin, SV
[J]. ASTRONOMY & ASTROPHYSICS, 2006, 451 (03): : 909 - U65
[7] The geometry of stellar motions in the nucleus region of the Ursa Major kinematic group
Chupina, NV
Reva, VG
Vereshchagin, SV
[J]. ASTRONOMY & ASTROPHYSICS, 2001, 371 (01) : 115 - 122
[8] Cutri R. M., 2003, VIZIER ON LINE DATA
[9] A proper-motion membership study of the old open cluster NGC 188
Dinescu, DI
Girard, TM
vanAltena, WF
Yang, TG
Lee, YW
[J]. ASTRONOMICAL JOURNAL, 1996, 111 (03) : 1205 - 1219
[10] Low-extinction windows in the inner Galactic Bulge
Dutra, CM
Santiago, BX
Bica, E
[J]. ASTRONOMY & ASTROPHYSICS, 2002, 381 (01) : 219 - 226

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