On the Origin of S0 Stellar Populations

被引：0
作者：
Yasuhiro Shioya
Kenji Bekki
Alexandre Vazdekis
机构：
[1] Tohoku University,Center for Interdisciplinary Research
[2] Tohoku University,Astronomical Institute
[3] University of Tokyo,Institute of Astronomy
来源：
Astrophysics and Space Science | 2001年 / 276卷
关键词：
Star Formation; Spiral Galaxy; Versus Colour; Stellar Population; Star Formation Rate;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
We investigate a one-zone chemo-photometric evolutionary model of truncated spiral galaxies with and without starbursts in order to explore the origin of the spectrophotometric properties of S0s. First, we show that 1) the tight U-V colour–magnitude (CM) relation cannot reject the model with a starburst and 2) the model with a starburst can explain the difference in the I-K colour–magnitude relation between S0 galaxies and spiral galaxies. Next, we demonstrate how we can distinguish the truncated spirals with a starburst from those without a starburst by using the CaII–Hδ/λ4045 diagram (proposed by Leonardi and Rose, 1996) and the 1550-V colour.
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收藏
页码：823 / 829
页数：6
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