ChJAA Vol 4, No 1 (2004) / Zhao

Determination of the Thickness of Non-Edge-on Disk Galaxies

Ying-He Zhao, Qiu-He Peng, Lan Wang

Abstract

We propose a method to determine the thickness of non-edge-on disk galaxies from their observed structure of spiral arms, based on the solution of the truly three-dimensional Poisson's equation for a logarithmic disturbance of density and under the condition where the self-consistency of the density wave theory is no longer valid. From their measured number of arms, pitch angle and location of the innermost point of the spiral arms, we derive and present the thicknesses of 34 spiral galaxies.

Keywords


galaxies: non-edge-on galaxies --- galaxies: spiral --- thickness: density wave theory

Full Text:

PDF

Refbacks

  • There are currently no refbacks.