A search for spectroscopic binaries among Herbig Ae Be stars

被引：92

作者：

Corporon, P ^{[1
]}

Lagrange, AM ^{[1
]}

机构：

[1] Observ Grenoble, Astrophys Lab, F-38041 Grenoble, France

来源：

ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES | 1999年 / 136卷 / 03期

关键词：

binaries : spectroscopic; stars : early-type; stars : pre-Main Sequence; stars : statistics;

D O I：

10.1051/aas:1999225

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present the results of a spectroscopic survey of binaries among 42 bright (m(v) < 11) Herbig Ae/Be stars in both hemispheres. Radial velocity variations were found in 7 targets, 4 are new spectroscopic binaries. The Li I 6 708 Angstrom absorption line (absent feature in simple HAeBe stars spectra) indicates the presence of a cooler companion in 6 HAeBe spectrum binaries, 4 of which are new detections. Few stars classified as possible Herbig Ae/Be stars are not confirmed as such. While for short-period (P < 100 days) spectroscopic binaries, the observed binary frequency is 10%, the true spectroscopic binary frequency for Herbig Ae/Be stars may be as high as 35%.

引用

页码：429 / 444

页数：16

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