发射线星系的物端棱镜巡天(Ⅳ)

Objective Prism Survey For Emission-Line Galaxies (Ⅳ)

本文发表的是用北京天文台60厘米施密特望远镜进行发射线星系物端棱镜巡天结果的第四篇文章。文中的表1包括100个发射线天体,其中的96个是发射线星系;其余的对象有3个行星状星云,1个发射线星。在这些发射线星系中,属于s,sd型的有69个,d,ds型的有27个,分别占72％和28％。除了4个已知的Seyfert星系之外,至少还有5个也可能是Seyfert星系。这些发射线天体中的23个是IRAS源,它们都与具有强发射的现象相联系.

This paper is the fourth in a series publishing the results of an objective prism survey for emission-line galaxies with the 60 cm Schmidt Telescope of the Beijing Astronomical Observatory. We find a total of 100 emission-line objects, of which 96 are galaxies, the rest being 3 planetary nebulae and 1 star. Among the 96 emission-line galaxies 69 belong to s or sd types and 27 to d or ds types, and they make up 72 and 28 percent of the total, respectively. Besides four known Seyfert galaxies, there are 5 objects suspected to be such systems. 23 objects in the list appear in the IRAS Point Source Catalog, and they all show the presence of strong emission lines.