12CO emission from the Red Rectangle

Observations of an unprecedented quality made by ALMA on the Red Rectangle of CO（3-2） and CO（6-5） emissions are analysed jointly with the aim of obtaining as simple as possible a description of the gas morphology and kinematics. Evidence is found for polar conical outflows and for a broad equatorial...

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Bibliographic Details
Published in:Research in astronomy and astrophysics 2015-12, Vol.15 (12), p.2213-2228
Main Authors: Anh, Pham Tuan, Diep, Pham Ngoc, Hoai, Do Thi, Nhung, Pham Tuyet, Phuong, Nguyen Thi, Thao, Nguyen Thi, Darriulat, Pierre
Format: Article
Language:English
Subjects:
circumstellar matter
planetary nebulae: individual (Red Rectangle)
radio-lines: stars
stars: AGB and post-AGB
不对称性
排放量
矩形
简单模型
证据
赤道地区
运动学分析
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Summary:Observations of an unprecedented quality made by ALMA on the Red Rectangle of CO（3-2） and CO（6-5） emissions are analysed jointly with the aim of obtaining as simple as possible a description of the gas morphology and kinematics. Evidence is found for polar conical outflows and for a broad equatorial torus in rotation and expansion. Simple models of both are proposed. Comparing CO（6-5） and CO（3-2） emissions provides evidence for a strong temperature enhancement over the polar outflows. Continuum emission （dust） is seen to be enhanced in the equatorial region. Observed asymmetries are briefly discussed.
ISSN:1674-4527
2397-6209
DOI:10.1088/1674-4527/15/12/009