The evolution of the spiral galaxy M51a

被引：0

作者：

Kang, Xiaoyu ^{[1
,2
,3
]}

Zhang, Fenghui ^{[1
,2
]}

Chang, Ruixiang ^{[4
]}

机构：

[1] Chinese Acad Sci, Yunnan Observ, Kunming 650011, Yunnan, Peoples R China

[2] Chinese Acad Sci, Key Lab Struct & Evolut Celestial Objects, Beijing, Peoples R China

[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[4] Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, 80 Nandan Rd, Shanghai 200030, Peoples R China

来源：

GALAXIES AT HIGH REDSHIFT AND THEIR EVOLUTION OVER COSMIC TIME | 2016年 / 11卷 / S319期

基金：

中国国家自然科学基金;

关键词：

galaxies: abundance; galaxies: evolution; galaxies: individual: M51a; galaxies: spiral;

D O I：

10.1017/S1743921315009916

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A simple model for M51a is constructed to explore its evolutionary history by assuming its disk grows from continuous gas infall, which is shaped by a free parameter-the infall-peak time t(p). By adopting a constant infall-peak time t(p) = 7.0Gyr, our model predictions can reproduce most of the observed constraints and still show that the disk of M51a forms inside-out. Our results also show that the current molecular gas surface density, the star-formation rate and the UV-band surface brightness are important quantities to trace the effect of recent interactions on galactic star-formation process.

引用

页码：129 / 129

页数：1

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