The Discovery of Tidal Tails around the Globular Cluster NGC 7492 with Pan-STARRS1

被引：24

作者：

Navarrete, C. ^{[1
,2
,3
]}

Belokurov, V. ^{[3
]}

Koposov, S. E. ^{[3
,4
]}

机构：

[1] Pontificia Univ Catolica Chile, Inst Astrofis, Av Vicuna Mackenna 4860, Santiago 7820436, Chile

[2] Millennium Inst Astrophys, Santiago, Chile

[3] Univ Cambridge, Inst Astron, Madingley Rd, Cambridge CB3 0HA, England

[4] Carnegie Mellon Univ, Dept Phys, McWilliams Ctr Cosmol, 5000 Forbes Ave, Pittsburgh, PA 15213 USA

来源：

ASTROPHYSICAL JOURNAL LETTERS | 2017年 / 841卷 / 02期

基金：

美国国家航空航天局; 美国国家科学基金会; 欧洲研究理事会;

关键词：

Galaxy: formation; Galaxy: halo; globular clusters: individual (NGC 7492); DIGITAL SKY SURVEY; COLD STELLAR STREAM; MILKY-WAY; MASS SEGREGATION; 3-PI SURVEY; PALOMAR; NGC-7492; SATELLITES; GALAXY; OUTER;

D O I：

10.3847/2041-8213/aa72e1

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report the discovery of tidal tails around the Galactic globular cluster NGC 7492, based on the Data Release 1 of the Pan-STARRS1 survey. The tails were detected using a version of the matched filter technique applied to the (g - r, r) and (g - i, i) color-magnitude diagrams. Tidal tails emerging from the cluster extend at least similar to 3 degrees.5 in the north-east to south-east direction, equivalent to similar to 1.5 kpc in projected length.

引用

页数：4

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