${}^{12}$CO emission from the Red Rectangle

Abstract

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.

16 pages, 12 figures, typos added, accepted for publication in Research in Astronomy and Astrophysics (RAA)

References in corpus (4)

• Extended rotating disks around post-AGB stars
• ALMA observations of the Red Rectangle, a preliminary analysis
• Warm gas in the rotating disk of the Red Rectangle: accurate models of molecular line emission
• Constraining the shaping mechanism of the Red Rectangle through spectro-polarimetry of its central star

Cited by in corpus (2)

• Space reconstruction of the morphology and kinematics of axisymmetric radio sources
• ALMA observations of the circumstellar envelope around EP Aqr