银河系序列中盘面和螺旋臂的性质
天体物理学
2009-11-07 v1
摘要
本文 presenting some new statistical correlations between the properties of disks and spiral arms with some physical properties of galaxies。我们的结果显示,螺旋盘的厚度沿着银河系序列趋于减小,Sc 类型的星系盘比Sab-Sb 类型的盘薄约40%。此外,较薄的盘也更蓝。我们还发现,在每个银河系类型内,HI 线宽与臂纹模式之间存在相关性,这表明臂形部分由星系质量决定。总质量-光度比和总质量面积密度也与螺距角相关,即在盘面密度较低且总质量-光度比较低的星系中,螺距角倾向于更大。
引用
@article{arxiv.astro-ph/0203220,
title = {Properties of disks and spiral arms along the Hubble sequence},
author = {Jun Ma},
journal= {arXiv preprint arXiv:astro-ph/0203220},
year = {2009}
}
备注
8 pages, has been accepted for publication in A&Ap