The Optical Gravitational Lensing Experiment. Triple-Mode and 1O/3O Double-Mode Cepheids in the Large Magellanic Cloud

被引：0

作者：

Soszynski, I. ^{[1
]}

Poleski, R. ^{[1
]}

Udalski, A. ^{[1
]}

Kubiak, M. ^{[1
]}

Szymanski, M. K. ^{[1
]}

Pietrzynski, G. ^{[1
,2
]}

Wyrzykowski, L. ^{[1
,3
]}

Szewczyk, O. ^{[1
,2
]}

Ulaczyk, K. ^{[1
]}

机构：

[1] Univ Warsaw Observ, PL-00478 Warsaw, Poland

[2] Univ Concepcion, Dept Fis, Concepcion, Chile

[3] Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England

来源：

ACTA ASTRONOMICA | 2008年 / 58卷 / 03期

关键词：

Cepheids; Stars: oscillations; Stars: evolution; Magellanic Clouds;

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report the discovery of three new triple-mode classical Cepheids in the Large Magellanic Cloud, two of them with the fundamental, first overtone and second overtone excited, and one pulsating simultaneously in the first three overtones. Thus, the number of triple-mode Cepheids in the LMC is increased to five. We also present two objects belonging probably to a new type of double-mode Cepheids having the first and third overtones excited. We measure the rates of period change in these stars and detect decrease of periods in two of them, what is in conflict with theoretical predictions.

引用

页码：153 / 162

页数：10

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