A new class of rapidly pulsating star .1. EC 14026-2647, the class prototype

被引：380

作者：

Kilkenny, D ^{[1
]}

Koen, C ^{[1
]}

ODonoghue, D ^{[1
]}

Stobie, RS ^{[1
]}

机构：

[1] UNIV CAPE TOWN,DEPT ASTRON,ZA-7700 RONDEBOSCH,SOUTH AFRICA

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 1997年 / 285卷 / 03期

关键词：

binaries; general; stars; individual; EC; 14026-2647; oscillations; variables; other;

D O I：

10.1093/mnras/285.3.640

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report the discovery of small-amplitude, very rapid light variations in the sdB binary, EC 14026 - 2647. The variations, probably due to pulsation of the sdB star, have an apparently stable main period near 144 s with a semi-amplitude of similar to 0.012 mag. There is good evidence for a period near 134 s with a semi-amplitude of similar to 0.004 mag; the latter might be variable. We regard this star as the prototype for a new class of variable which we refer to as EC14026 stars.

引用

页码：640 / 644

页数：5

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