The Rotation of a Barred Galaxy Under Gravitational Forces
Open Access
- 1 December 1960
- journal article
- Published by Oxford University Press (OUP) in Monthly Notices of the Royal Astronomical Society
- Vol. 121 (6) , 525-529
- https://doi.org/10.1093/mnras/121.6.525
Abstract
A simple geometrical model of a barred spiral with central nucleus is considered. The problem of rotation about an axis normal to the bar axis is discussed, and it is found that a certain density distribution in the bar will make the system remain stable for a time of order 3 × 10 9 years. When the ratio of the diameter of the nucleus to the total length of the bar is 1:3, as in Fig. 2, this situation requires the ratio of total bar mass to central mass to equal 0.54. If the latter is taken to be 5 × 10 10 ⊙ the period of rotation is 1.5 × 10 8 years.Keywords
This publication has 0 references indexed in Scilit: