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.
@article{arxiv.1503.00858,
title = {$^{12}$CO emission from the Red Rectangle},
author = {Pham Tuan Anh and Pham Ngoc Diep and Do Thi Hoai and Pham Tuyet Nhung and Nguyen Thi Phuong and Nguyen Thi Thao and Pierre Darriulat},
journal= {arXiv preprint arXiv:1503.00858},
year = {2016}
}
Comments
16 pages, 12 figures, typos added, accepted for publication in Research in Astronomy and Astrophysics (RAA)