Tracing the Tidal Streams of the Sagittarius dSph with Long-Period Variable Carbon Stars

被引：0

作者：

Huxor, A. P. ^{[1
]}

Grebel, E. K. ^{[1
]}

机构：

[1] Heidelberg Univ, Zentrum Astron, Astron Rech Inst, Bergheimer Str 58, D-69115 Heidelberg, Germany

来源：

WHY GALAXIES CARE ABOUT AGB STARS III: A CLOSER LOOK IN SPACE AND TIME | 2015年 / 497卷

关键词：

MILKY-WAY HALO; ALL-SKY SURVEY; GALACTIC HALO; CATALINA SURVEYS; DWARF GALAXY; 2MASS; FIELD; VIEW; KPC; RED;

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have used Catalina Surveys variability data to study a sample of 121 spectroscopically-confirmed high-latitude carbon stars drawn from the literature. From their periods we estimate their distances. We find that the great majority of these can be attributed to the tidal tails of the Sagittarius dwarf spheroidal galaxy, as represented by the Law & Majewski (2010) simulation. However, our sample does not appear across the full extent of this model, suggesting possible shortcomings, especially near the predicted apocenter of the trailing arm. Other carbon stars appear to be associated with other previously known substructures, while a handful may indicate previously unknown features.

引用

页码：467 / 472

页数：6

共 25 条

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