A FORMING DWARF GALAXY IN A TIDAL TAIL OF THE MERGING GALAXY NGC-2782

被引：0
|
作者：
YOSHIDA, M [1 ]
TANIGUCHI, Y [1 ]
MURAYAMA, T [1 ]
机构：
[1] TOHOKU UNIV,INST ASTRON,SENDAI,MIYAGI 980,JAPAN
来源：
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN | 1994年 / 46卷 / 06期
关键词：
GALAXIES; FORMATION; INDIVIDUAL; (NGC-2782); INTERACTING; IRREGULAR; STARS;
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We report on a serendipitous discovery of a possible candidate of a forming dwarf galaxy in the eastern H I tidal tail of the merging galaxy NGC 2782. Its optical spectrum shows the properties of high-excitation emission lines, similar to those of blue compact-dwarf galaxies. The geometrical size and the absolute R magnitude are 1 kpc and -12.7 mag, respectively. We have also detected a rotational motion of 120 km s-1 kpc-1, giving a dynamical mass of 4 x 10(8) (sin i)-2 M.. These observational properties are almost consistent with those of numerical models put forward by Barnes and Hernquist (1992, AAA56.151.097).
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页码：L195 / &
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