Tidal disruption of the aged open cluster Berkeley 17

被引：2

作者：

Chen, W. P. ^{[1
]}

Bhattacharya, S. ^{[2
]}

Mishra, I. ^{[3
]}

Vaidya, K. ^{[2
]}

Lalchand, B. ^{[1
]}

机构：

[1] Natl Cent Univ, Grad Inst Astron, Taoyuan, Taiwan

[2] Birla Inst Technol & Sci Pilani, Pilani, Rajasthan, India

[3] Indian Inst Technol, Gauhati, India

来源：

FRONTIERS IN THEORETICAL AND APPLIED PHYSICS/UAE 2017 (FTAPS 2017) | 2017年 / 869卷

关键词：

STAR-CLUSTERS;

D O I：

10.1088/1742-6596/869/1/012093

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Berkeley 17 is known to show a core-tail morphology. Pan-STARRS 1 photometry complete to g(p1) approximate to 21.5 mag reveals the effect of mass segregation between the core and the tail (and an antitail). Furthermore, there is an overall paucity of low-mass member stars - likely as the consequence of tidal stripping by the foreground Perseus arm of this aged (10 Gyr) cluster. Our analysis indicates that about half of the blue straggler candidates suspected to be associated with Berkeley 17 may be field contaminations, and yet some may be confused with blue horizontal-branch stars usually found only in globular clusters. We propose Berkeley 17 to be a remnant super star cluster in the continuing process of disintegration.

引用

页数：4