Three-dimensional modelling of the collimated bipolar outflows of compact planetary nebulae with Wolf-Rayet-type central stars
Por:
Akras, S, Lopez, JA
Publicada:
1 sep 2012
Resumen:
We present high-resolution, long-slit spectroscopic observations of five compact (=10?arcsec) planetary nebulae located close to the galactic bulge region and for which no high spatial resolution images are available. The data have been drawn from the San Pedro Martir kinematic catalogue of galactic planetary nebulae. The central star in four of these objects (M1-32, M2-20, M2-31 and M3-15) is of WolfRayet (WR) type and the fifth object (M2-42) has a weak emission-line star (wels) type nucleus. These observations reveal the presence in all of them of a dense and thick equatorial torus-like component and high-speed, collimated bipolar outflows. The code shape is used to investigate the main morphokinematic characteristics and reproduce the three-dimensional structure of these objects assuming a cylindrical velocity field for the bipolar outflows and a homologous expansion law for the torus/ring component. The deprojected expansion velocities of the bipolar outflows are found to be in th
Filiaciones:
Akras, S:
Univ Nacl Autonoma Mexico, Inst Astron, Ensenada 22800, Baja California, Mexico
Lopez, JA:
Univ Nacl Autonoma Mexico, Inst Astron, Ensenada 22800, Baja California, Mexico
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