Tracing the Sgr Stream with 2MASS - Detection of Stream stars around Outer Halo globular clusters

被引：62

作者：

Bellazzini, M

Ibata, R

Ferraro, FR

Testa, V

机构：

[1] Osservatorio Astron Bologna, INAF, I-40127 Bologna, Italy

[2] Observ Strasbourg, F-67000 Strasbourg, France

[3] Univ Bologna, Dipartimento Astron, I-40127 Bologna, Italy

[4] Osserv Astron Roma, INAF, I-00040 Monte Porzio Catone, Italy

来源：

ASTRONOMY & ASTROPHYSICS | 2003年 / 405卷 / 02期

关键词：

Galaxy : halo; Galaxy : structure; globular clusters : individual : Pal 12; NGC; 4147;

D O I：

10.1051/0004-6361:20030649

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We use infrared Color Magnitude Diagrams from the 2-Micron All-Sky Survey (2MASS) to search for stars belonging to the tidal stream of the Sagittarius dwarf spheroidal galaxy (Sgr dSph) around selected Galactic globular clusters. Statistically significant detections are presented for the cases of Pal 12 and NGC 4147, strongly supporting the idea that these clusters are associated with the Sgr Stream and that they were previous members of the Sgr dSph galaxy.

引用

页码：577 / 583

页数：7

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