H-I STUDIES OF THE SCULPTOR GROUP GALAXIES .6. NGC-300

被引：83

作者：

PUCHE, D

CARIGNAN, C

BOSMA, A

机构：

[1] UNIV MONTREAL,DEPT PHYS,MONTREAL H3C 3J7,QUEBEC,CANADA

[2] UNIV MONTREAL,OBSERV MT MEGANT,MONTREAL H3C 3J7,QUEBEC,CANADA

[3] OBSERV MARSEILLE,F-13248 MARSEILLE 04,FRANCE

来源：

ASTRONOMICAL JOURNAL | 1990年 / 100卷 / 05期

关键词：

D O I：

10.1086/115612

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A study of the kinematics of the Sculptor group galaxy NGC 300 is presented. VLA* observations of the H I line show a dramatically warped H I disk just outside the optical disk. A two-component mass model, fitted to the data, gives a total mass of 2.4×1010 script M sign⊙ at the last observed point of the rotation curve. This value implies a (script M sign/LB)global≃11 script M sign⊙/L⊙ for the galaxy which is compared with the total dynamical (script M sign/LB)dyn of the group. This comparison suggests that dark matter is probably more concentrated around the galaxies of the group than uniformly distributed in the intergalactic medium.

引用

页码：1468 / &

共 25 条

[1]

ATHANASSOULA E, 1987, ASTRON ASTROPHYS, V179, P23

[2]

BEGEMAN KG, 1989, ASTRON ASTROPHYS, V223, P47

[3] 21-CM LINE STUDIES OF SPIRAL GALAXIES .2. THE DISTRIBUTION AND KINEMATICS OF NEUTRAL HYDROGEN IN SPIRAL GALAXIES OF VARIOUS MORPHOLOGICAL TYPES [J].