Determination of the Thickness of Non-Edge-on Disk Galaxies
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a logarithmic disturbance of density and under the condition where the self-consistency of the density wave theory is no longer valid.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 34spiral galaxies.
作 者： Ying-He Zhao Qiu-He Peng Lan Wang 作者單位： Ying-He Zhao,Lan Wang(Department of Astronomy, Nanjing University, Nanjing 210093)Qiu-He Peng(Department of Astronomy, Nanjing University, Nanjing 210093;Joint Astrophysics Center of Chinese Academy of Science-Peking University, Beijing 100871;The Open Laboratory of Cosmic Ray and High Energy Astrophysics, Chinese Academy of Scinces)
刊 名： 天體物理學報(英文版) ISTIC SCI 英文刊名： CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS 年，卷(期)： 2004 4(1) 分類號： P1 關鍵詞： galaxies: non-edge-on galaxies - galaxies: spiral - thickness: density wave theory【Determination of the Thickness of No】相關文章：
Determination of arterial wall shear stress04-27
Credit Determination of Fibre Channel in Avionics Environment04-29
Flight Vehicle Attitude Determination Using the Modified Rodrigues Parameters04-28
Decay vertex reconstruction and 3-dimensional lifetime determination at BESⅢ04-28
Determination of operational parameters of anaerobic phase for enhanced phosphorus removal in MBR04-26
Determination of hydroxyl radicals with salicylic acid in aqueous nitrate and nitrite solutions04-26