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The evolution of the spiral galaxy M51a
Kang XY(康晓宇)1; Zhang FH(张奉辉)1; Chang, RX2
会议录名称Proceedings of International Astronomical Union (IAU) Symposium - Galaxies at High Redshift and Their Evolution Over Cosmic Time
2015-09-15
卷号319
页码129-129
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会议名称319th IAU Symposium - Galaxies at High Redshift and Their Evolution Over Cosmic Time
会议日期2015-08-11
会议地点Honolulu, United States
关键词Galaxies: Abundance Galaxies: Evolution Galaxies: Individual: M51a Galaxies: Spiral
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.

语种英语
学科领域天文学
学科门类理学 ; 理学::天文学
出版者Cambridge University Press
出版地Cambridge, UK
ISBN号9781107138261
URL查看原文
归档日期2016-12-01
文献类型会议论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/9779
专题大样本恒星演化研究组
作者单位1.Yunnan Observatories, CAS, Kunming, 650011, China
2.Key Laboratory for Research in Galaxies and Cosmology, Shangahi Astronomical Observatory, CAS, 80 Nandan Road, Shanghai, 200030, China
第一作者单位中国科学院云南天文台
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Kang XY,Zhang FH,Chang, RX. The evolution of the spiral galaxy M51a[C]. Cambridge, UK:Cambridge University Press,2015:129-129.
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