Cepheids as tracers of star formation in M 31 - I. Observations and identifications

被引：27

作者：

Magnier, EA

Augusteijn, T

Prins, S

van Paradijs, J

Lewin, WHG

机构：

[1] Univ Amsterdam, Astron Inst Anton Pannekoek, NL-1098 SJ Amsterdam, Netherlands

[2] Ctr High Energy Astrophys, NL-1098 SJ Amsterdam, Netherlands

[3] Univ Illinois, Dept Astron, Urbana, IL 61801 USA

[4] Univ Washington, Dept Astron 351580, Seattle, WA 98195 USA

[5] MIT, Cambridge, MA 02139 USA

[6] European So Observ, Santiago 19, Chile

[7] Univ Alabama, Dept Phys, Huntsville, AL 35899 USA

来源：

ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES | 1997年 / 126卷 / 03期

关键词：

(stars; variables; Cepheids; stars; formation; galaxies; individual; M; 31; stellar content; (cosmology; ) distance scale;

D O I：

10.1051/aas:1997394

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Cepheid variables can be used for more than just a distance indicator. Since the age can be determined from the period, they can be used to trace the star formation history of a galaxy. We have identified 130 new Cepheid variable candidates in M 31, particularly along the spiral arm regions in the north-east of the galaxy. These areas had not been searched for Cepheids in the previous study by Baade and collaborators. The contamination of our sample by other types of variables is low (<3%). For V < 21, the completeness is similar to 53%. These Cepheids will be used to explore the star formation history in M 31.

引用

页码：401 / 406

页数：6

共 20 条

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