COMPLEX MOTIONS OF NEUTRAL AND IONIZED-GAS WITHIN DUMB-BELL NEBULA (NGC6853) .2.

被引：21

作者：

GOUDIS, C

MCMULLAN, D

MEABURN, J

TEBBUTT, NJ

TERRETT, DL

机构：

[1] University of Manchester, Department of Astronomy, Manchester,M13 9PL, United Kingdom

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 1978年 / 182卷 / 01期

关键词：

Complex motion - Cylindrical shell - Ellipsoidal shells - Emission lines - Fabry-Perot - Insect eyes - Ionized gas - Neutral gas - Shell models - Unusual motion;

D O I：

10.1093/mnras/182.1.13

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

An electronographic insect-eye Fabry-Perot spectrograph has been used to obtain profiles of the [O III], [N II] and [O I] emission lines at many positions over the Dumb-bell Nebula.Narrow [O I] and [N II] lines are observed from the central areas. These are split into two distinct components separated by around 66 km/s. Whereas, broader [O III] lines, though often doubled by only ∼30 km/s, are observed.A cylindrical (or ellipsoidal) shell model of the nebula, expanding radially with respect to its axis, and not the central star, explains many of the observations. Very unusual motions are observed near the exciting star. © 1978 Royal Astronomical Society.

引用

页码：13 / 25

页数：13

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MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1976, 177 (01) :11-&

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