Observations and 3D Hydrodynamical models of planetary nebulae with Wolf Rayet type central stars

Abstract

We present high-resolution, long-slit spectroscopic observations of two planetary nebulae with [WC] central stars located near the galactic bulge, M 1-32 and M 3-15. The observations were obtained with the 2.1-m telescope at the Observatorio Astronómico Nacional, San Pedro Mártir. M 1-32 shows wide wings on the base of its emission lines and M 3-15 has two very faint high-velocity knots. In order to model both PNe we built a three-dimensional model consisting of a jet interacting with an equatorially concentrated slow wind, emulating the presence of a dense torus, using the Yguazú hydrodynamical code. From our hydrodynamical models, we obtained position-velocity (PV) diagrams in the [N II]$\lambda$6583 line for comparison with the observations. We find that the spectral characteristics of M 1-32 and M 3-15 can be explained with the same physical model -a jet moving inside an AGB wind- using different parameters (physical conditions and position angles of the jet). In agreement with our model and observations, these objects contain a dense torus seeing pole-on and a bipolar jet escaping thorough the poles. Then we propose to classify this kind of objects as spectroscopic bipolar nebulae, although they have been classified morphologically as compact, round, or elliptical nebulae or with "close collimated lobes".

8 pages, 7 figures. Accepted for publication in Monthly Notices of the Royal Astronomical Society

References in corpus (4)

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• Isolated vs. Common Envelope Dynamos in Planetary Nebula Progenitors
• An asymmetric jet launching model for the protoplanetary nebula CRL 618
• Galactic kinematics of planetary nebulae with [WC] central star

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• Kinematical Investigation of Possible Fast Collimated Outflows in Twelve Planetary Nebulae
• The kinematical behaviour of ORLs and CELs in Galactic PNe
• Shaping `Ears' in planetary nebulae by early jets
• Variable jets at the termination of the common envelope evolution
• The common envelope origins of the fast jet in the planetary nebula M 3-38
• Planetary nebulae with Wolf-Rayet-type central stars -- II. Dissecting the compact planetary nebula M2-31 with GTC MEGARA
• On the nature of jets from a main sequence companion at the onset of common envelope evolution
• Planetary nebulae with Wolf-Rayet-type central stars -- III. A detailed view of NGC 6905 and its central star