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The kinematical behavior of Galactic PNe with [WC] central star

Published online by Cambridge University Press:  30 August 2012

Jackeline S. Rechy-García
Fac. de Fisica e Inteligencia Artificial, U. Veracruzana, Xalapa, Ver., Mexico email:
Miriam Peña
Instituto de Astronomia, UNAM, 04510 Mexico D.F., email:
Jorge García-Rojas
Instituto de Astrofisica de Canarias, La Laguna, Tenerife, Spain, email:
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High resolution spectroscopic data of a large sample of galactic planetary nebulae with [WC] central stars ([WC]PNe) are analyzed to determine their kinematical behavior. Their heliocentric velocities have been determined with a precision better than a few km/s. Distances obtained from the literature are used to derive the peculiar velocities of the objects. Our preliminary results are: (a) The [WC] PNe are distributed in the galactic disk and they appear more concentrated than the normal PNe. (b) Separating the sample in Peimbert's types, we find that Type I PNe show in general low peculiar velocities (<50 km/s) except for a couple of objects apparently belonging to the galactic bulge. For the other [WC]PNe, most of them belong to the Peimbert's Type II (defined as having Vpec ≤ 60 km/s). However there is an important fraction (28%) showing Vpec larger than 60 km/s therefore they are classified as Peimbert's Type III.

Contributed Papers
Copyright © International Astronomical Union 2012


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