A RADIAL VELOCITY AND LIGHT CURVE STUDY OF PULSATIONS AND BINARITY IN PROTO-PLANETARY NEBULAE

被引：0

作者：

Hrivnak, B. J. ^{[1
]}

Lu, W. ^{[1
]}

de Steene, G. Van ^{[2
]}

Van Winckel, H. ^{[3
]}

Sperauskas, J. ^{[4
]}

Bohlender, D. ^{[5
]}

机构：

[1] Valparaiso Univ, Valparaiso, IN 46383 USA

[2] Royal Observ Belgium, Louvain, Belgium

[3] Katholieke Univ Leuven, Louvain, Belgium

[4] Vilnius Univ Observ, Vilnius, Lithuania

[5] Dominion Astrophys Observ, Victoria, BC, Canada

来源：

PHYSICS OF EVOLVED STARS: A CONFERENCE DEDICATED TO THE MEMORY OF OLIVIER CHESNEAU | 2015年 / 71-72卷

关键词：

VARIABILITY; OBJECTS; RICH;

D O I：

10.1051/eas/1571026

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have investigated pulsations and searched for binarity in 7 bright proto-planetary nebulae. All are found to pulsate, with dominant periods of 39-132 days. However, no strong evidence of binarity is found in any of them. This implies that any binary companion must have either a very long period (>30 yr) or low mass (<0.2 M-sun). This appears to rule out Roche lobe overflow as a contribution to the shaping of the surrounding nebula.

引用

页码：127 / 128

页数：2

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