Further ALMA observations and detailed modeling of the Red Rectangle.

ABSTRACT:

Aims

We aim to study the rotating and expanding gas in the Red Rectangle, which is a well known object that recently left the asymptotic giant branch (AGB) phase. We analyze the properties of both components and the relation between them. Rotating disks have been very elusive in post-AGB nebulae, in which gas is almost always found to be in expansion.

Methods

We present new high-quality ALMA observations of C¹⁷O J=6-5 and H¹³CN J=4-3 line emission and results from a new reduction of already published ¹³CO J=3-2 data. A detailed model fitting of all the molecular line data, including previous maps and single-dish observations of lines of CO, CII, and CI, was performed using a sophisticated code that includes an accurate no

SUBMITTER: Bujarrabal V 

PROVIDER: S-EPMC5166967 | biostudies-literature | 2016 Sep

REPOSITORIES: biostudies-literature