Population I Cepheids and understanding star formation history of the Small Magellanic Cloud

被引：0

作者：

Yogesh Chandra Joshi ^{[1
]}

Auro Prasad Mohanty ^{[2
]}

Santosh Joshi ^{[1
]}

机构：

[1] Aryabhatta Research Institute of Observational Sciences

[2] National Institute of Technology

来源：

ResearchinAstronomyandAstrophysics | 2016年 / 16卷 / 04期

关键词：

stars; Cepheids — star type; Pop I(classical) — galaxies; SMC; —; methods; statistical;

D O I：

暂无

中图分类号：

P152 [恒星天文学、星系天文学];

学科分类号：

070401 ;

摘要：

In this paper, we study the age and spatial distributions of Cepheids in the Small Magellanic Cloud(SMC) as a function of their ages using data from the OGLE III photometric catalogue. A period- age relation derived for Classical Cepheids in the Large Magellanic Cloud(LMC) has been used to find the ages of Cepheids. The age distribution of the SMC Classical Cepheids is found to have a peak at log(Age) = 8.40 ± 0.10 which suggests that a major star formation event might have occurred in the SMC about 250 ± 50 Myr ago. It is believed that this star forming burst had been triggered by close interactions of the SMC with the LMC and/or the Milky Way. A comparison of the observed spatial distributions of the Cepheids and open star clusters has also been carried out to study the star formation scenario in the SMC.

引用

页码：73 / 80

页数：8