Pulsation in the pre-main-sequence Herbig Ae star HD 142666

被引：13

作者：

Kurtz, DW ^{[1
]}

Müller, M

机构：

[1] Univ Cape Town, Dept Astron, ZA-7700 Rondebosch, South Africa

[2] Observ Midi Pyrenees, CNRS UMR 5572, Lab Astrophys OMP, F-31400 Toulouse, France

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2001年 / 325卷 / 04期

关键词：

stars; emission-line; Be; stars : individual : HD 142527; stars : individual : HD; 142666; stars : oscillations; stars : pre-main-sequence; delta Scuti;

D O I：

10.1046/j.1365-8711.2001.04407.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Asteroseismology of pre-main-sequence delta Scuti stars has the potential not only to provide unprecedented constraints on models of these stars, but also to allow for the possibility of detecting evolutionary period changes, thus providing a direct measure of the pre-main-sequence evolutionary time-scale. In the last two years, the published number of such stars known has doubled from four to eight. Searches are now being conducted amongst the Herbig Ae stars, which are considered to be excellent candidates. We announce the discovery of delta Scuti pulsation in one Herbig Ae star, HD 142666, which lies within Marconi & Palla's theoretically predicted instability strip for pre-main-sequence stars, making this the ninth known pre-main-sequence delta Scuti star. We also demonstrate a lack of delta Scuti pulsation in another such star, HD 142527.

引用

页码：1341 / 1345

页数：5

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