Menzel 3: Dissecting the ant

Details Menzel 3: Dissecting the ant Menzel 3: Dissecting the ant

2004-06-24

arxiv.org/abs/astro-ph/0406551v1

Astron.Astrophys. 426 (2004) 185-194

Astronomy and Astrophysics

Astrophysics

12 pages, 14 figures, accepted by A&A. Full resolution version available at http://www.iac.es/proyect/pn_iac/

Scientific paper

10.1051/0004-6361:20041147

The structure and kinematics of the bipolar nebula Mz 3 have been investigated by means of HST, CTIO and ESO images and spectra. At least four distinct outflows have been identified which, from the inside to the outside, are the following: a pair of bright bipolar lobes, two opposite highly collimated column-shaped outflows, a conical system of radial structure, and a very dim, previously unnoticed, low-latitude and flattened (ring-like) radial outflow. A simple Hubble-law describes the velocity field of the ballisticaly expanding lobes, columns and rays, suggesting that their shaping has being done at very early stages of evolution, in a sort of eruptive events with increasing degree of collimation and expansion ages ranging from ~600 for the inner structures to ~1600 years (per kpc to the nebula) for the largest ones.

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