A new Wolf-Rayet star and its ring nebula: PCG 11

被引：11

作者：

Cohen, M ^{[1
]}

Parker, QA

Green, AJ

机构：

[1] Univ Calif Berkeley, Radio Astron Lab, Berkeley, CA 94720 USA

[2] Macquarie Univ, Dept Phys, N Ryde, NSW 2109, Australia

[3] Anglo Australian Observ, Epping, NSW 2121, Australia

[4] Univ Sydney, Sch Phys, Sydney, NSW 2006, Australia

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2005年 / 360卷 / 04期

关键词：

instabilities; stars : Wolf-Rayet; ISM : bubbles;

D O I：

10.1111/j.1365-2966.2005.09137.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In a search for new Galactic planetary nebulae from our systematic scans of the Anglo-Australian Observatory/United Kingdom Schmidt Telescope (AAO/UKST) H alpha Survey of the Southern Galactic Plane, we have identified a Population I Wolf-Rayet star of type WN7h associated with an unusual ring nebula that has a fractured rim. We present imagery in H alpha, the 843-MHz continuum from the Molonglo Observatory Synthesis Telescope (MOST), the mid-infrared from the Midcourse Space Experiment (MSX), and confirmatory optical spectroscopy of the character of the nebula and of its central star. The inner edge of the H alpha shell shows gravitational instabilities with a well-defined wavelength around its complete circumference.

引用

页码：1439 / 1447

页数：9

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