Serendipitous 2MASS discoveries near the Galactic Plane: A spiral galaxy and two globular clusters

被引：51

作者：

Hurt, RL

Jarrett, TH

Kirkpatrick, JD

Cutri, RM

Schneider, SE

Skrutskie, M

van Driel, W

机构：

[1] CALTECH, Jet Prop Lab, Infrared Proc & Anal Ctr, Pasadena, CA 91125 USA

[2] Univ Massachusetts, Astron Program, Amherst, MA 01003 USA

[3] Observ Paris, United Sci Nancay, F-92195 Meudon, France

来源：

ASTRONOMICAL JOURNAL | 2000年 / 120卷 / 04期

关键词：

galaxies : photometry; galaxies : spiral; globular clusters : general; infrared radiation; surveys;

D O I：

10.1086/301549

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present the basic properties of three objects near the Galactic Plane-a large galaxy and two candidate globular clusters-discovered in the Two Micron All-Sky Survey (2MASS) data set. All were noted during spot checks of the data during 2MASS quality assurance reviews. The galaxy is a late-type spiral galaxy (Sc-Sd), similar to 11 Mpc distant, at l = 236.degrees 82, b = - 1.degrees 86. From its observed angular extent of 6.'3 in the near infrared, we estimate an extinction-corrected optical diameter of similar to 9.'5, making it larger than most Messier galaxies. The candidate globular clusters are similar to 2'-3' in extent and are hidden optically behind foreground extinctions of A(V) similar to 18-21 mag at l similar to 10 degrees, b similar to 0 degrees. These chance discoveries were not the result of any kind of systematic search, but they do hint at the wealth of obscured sources of all kinds, many previously unknown, that are in the 2MASS data set.

引用

页码：1876 / 1883

页数：8

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