Radio images of four luminous blue variable stars

被引：22

作者：

Duncan, RA

White, SA

机构：

[1] Australia Telescope Natl Facil, Epping, NSW 2121, Australia

[2] Univ Maryland, Dept Astron, College Pk, MD 20742 USA

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2002年 / 330卷 / 01期

关键词：

circumstellar matter; stars : individual : AG Car; stars : individual : HR Car stars : individual : He3-519; stars : individual : WRA 751; radio continuum : stars;

D O I：

10.1046/j.1365-8711.2002.05034.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have used the Australia Telescope Compact Array to image four southern luminous blue variable stars: AG Car, He3-519, HR Car and WRA 751, at wavelengths of 3 and 6 cm, and resolutions of 1 and 2 arcsec respectively. With the partial exception of HR Car, all radio images show an unresolved stellar core surrounded by a large ionized gaseous nebula, and agree well with published Halpha and [N II] optical images. The image of WRA 751 shows a stellar torus or disc. HR Car's radio image is unusual, and seems best explained by the presence of a hot binary companion.

引用

页码：63 / 68

页数：6

共 38 条

[1] Radio continuum measurements of southern early-type stars. III. Nonthermal emission from Wolf-Rayet stars [J].