A CATALOG HEII-4686 LINE-INTENSITIES IN GALACTIC PLANETARY-NEBULAE

被引：0

作者：

TYLENDA, R

STASINSKA, G

ACKER, A

STENHOLM, B

机构：

[1] OBSERV MEUDON,DAEC,F-92195 MEUDON,FRANCE

[2] OBSERV STRASBOURG,EQUIPE POPULAT STELLAIRES,URA 1280,F-67000 STRASBOURG,FRANCE

[3] LUND OBSERV,S-22100 LUND,SWEDEN

来源：

ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES | 1994年 / 106卷 / 03期

关键词：

STARS; ASYMPTOTIC; POSTASYMPTOTIC GIANT BRANCH (AGB; POST-AGB); (PLANETARY NEBULAE; GENERAL); FUNDAMENTAL PARAMETERS; CATALOGS;

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have compiled the intensities of the HeII 4686 lines measured in Galactic planetary nebulae. We present a few observational diagrams related to this parameter, and discuss them with the help of theoretical diagrams obtained from simple model planetary nebulae surrounding evolving central stars of various masses. We determine the hydrogen and helium Zanstra temperature for all the objects with accurate enough data. We argue that, for Galactic planetary nebulae as a whole, the main cause for the Zanstra discrepancy is leakage of stellar ionizing photons from the nebulae.

引用

页码：559 / 571

页数：13

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