12CO emission from the Red Rectangle

被引：1

作者：

Pham Tuan Anh ^{[1
]}

Pham Ngoc Diep ^{[1
]}

Do Thi Hoai ^{[1
]}

Pham Tuyet Nhung ^{[1
]}

Nguyen Thi Phuong ^{[1
]}

Nguyen Thi Thao ^{[1
]}

Darriulat, Pierre ^{[1
]}

机构：

[1] VAST, Vietnam Natl Satellite Ctr, Dept Astrophys, Hanoi, Vietnam

来源：

RESEARCH IN ASTRONOMY AND ASTROPHYSICS | 2015年 / 15卷 / 12期

关键词：

stars: AGB and post-AGB; circumstellar matter; radio-lines: stars; planetary nebulae: individual (Red Rectangle); HD-44179; DISK; GAS;

D O I：

10.1088/1674-4527/15/12/009

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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.

引用

页码：2213 / 2228

页数：16

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