The nature of the hot stars in the bulge of globular cluster NGC 6388

被引：0

作者：

Moehler, S ^{[1
]}

Sweigart, AV

机构：

[1] Univ Kiel, Inst Theoret Phys & Astrophys, D-24098 Kiel, Germany

[2] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

来源：

BALTIC ASTRONOMY | 2006年 / 15卷 / 01期

关键词：

stars : horizontal branch; stars : evolution; globular clusters : individual : NGC 6388;

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The metal-rich bulge globular clusters NGC6388 and NGC6441 show, distinct blue horizontal-branch tails in their color-magnitude diagrams. They, are thus strong cases of the well known Second Parameter Problem. In addition, the horizontal branches in these globular clusters show an upward tilt toward bluer colors, which cannot be explained by canonical evolutionary models. We will discuss several scenarios which have been proposed to explain these two features and present observations obtained to test these scenarios.

引用

页码：41 / 48

页数：8

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