Morphology and kinematics of the gas envelope of the variable AGB star π^1 Gruis

Observations of the ^12CO（3–2） emission from the circumstellar envelope（CSE） of the variable star π1Gru using the compact array of the ALMA observatory have been recently made accessible to the public. An analysis of the morphology and kinematics of the CSE is presented with a result very similar to...

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Bibliographic Details
Published in:天文和天体物理学研究：英文版 2016 (7), p.97-104
Main Author: Pham Tuyet Nhung Do Thi Hoai Pham Ngoc Diep Nguyen Thi Phuong Nguyen Thi Thao Pham Tuan Anh Pierre Darriulat
Format: Article
Language:English
Subjects:
AGB星
CSE
天文台
电发射
紧凑型
膜形态
运动学分析
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Summary:Observations of the ^12CO（3–2） emission from the circumstellar envelope（CSE） of the variable star π1Gru using the compact array of the ALMA observatory have been recently made accessible to the public. An analysis of the morphology and kinematics of the CSE is presented with a result very similar to that obtained earlier for ^12CO（2–1） emission using the Submillimeter Array. A quantitative comparison is made using their flared disk model. A new model is presented that provides a significantly better description of the data, using radial winds and smooth evolutions of the radio emission and wind velocity from the stellar equator to the poles.
ISSN:1674-4527
2397-6209