GALAXIES WITH STRONG NARROW EMISSION-LINES - SPECTROSCOPY, MORPHOLOGY AND RANGE IN ABSOLUTE SIZES

被引：17

作者：

FAIRALL, AP

机构：

[1] Department of Astronomy, University of Cape Town, Rondebosch,7700, South Africa

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 1980年 / 191卷 / 02期

关键词：

Astrophysics - Electromagnetic wave emission - Morphology - NASA;

D O I：

10.1093/mnras/191.2.391

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A sample of 47 Tololo emission line galaxies is considered. New spectroscopy for 29 of these galaxies is presented. The galaxies are classified morphologically into: (a) Entire galaxy is emission line source. These galaxies - shown in Plate 1 - are generally blue ellipticals with an average emission line ratio Hβ/4959 just less than unity. Their diameters range from ∼10 kpc down to unresolvable - one of them could not be resolved under 0.5 arcsec seeing, (b) Outer regions are emission line source - see Plate 2. They appear to be normal or supersized H II regions in late type galaxies, (c) Nucleus only is emission line source. These galaxies are characterized by a low Hβ/4959 ratio and appear related to Seyfert 2 galaxies, (d) Multiple systems with a high Hβ/4959 ratio. © 1980 Royal Astronomical Society. Provided by the NASA Astrophysics Data System.

引用

页码：391 / 397

页数：7

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