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Characterizing global expansion evolution of the ionized matter in planetary nebulae

Published online by Cambridge University Press:  08 August 2017

J. A. López ,
M. G. Richer Open the ORCID record for M. G. Richer [Opens in a new window] ,
M. Pereyra Open the ORCID record for M. Pereyra [Opens in a new window]  and
M. T. García-Díaz
J. A. López
Affiliation:
Instituto de Astronomía, Campus Ensenada, Universidad Nacional Autónoma de México, Ensenada, Baja California, C. P. 22860, México email: [email protected], [email protected], [email protected]
M. G. Richer
Affiliation:
Instituto de Astronomía, Campus Ensenada, Universidad Nacional Autónoma de México, Ensenada, Baja California, C. P. 22860, México email: [email protected], [email protected], [email protected]
M. Pereyra
Affiliation:
Schlumberger Foundation Fellow, University of Southampton Southampton, SO17 1BJ, United Kingdom email: [email protected]
M. T. García-Díaz
Affiliation:
Instituto de Astronomía, Campus Ensenada, Universidad Nacional Autónoma de México, Ensenada, Baja California, C. P. 22860, México email: [email protected], [email protected], [email protected]
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Abstract

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Bulk outflow or global expansion velocities are presented for a large number of planetary nebulae (PNe) that span a wide range of evolutionary stages and different stellar populations. The sample comprises 133 PNe from the Galactic bulge, 100 mature and highly evolved PNe from the disk, 11 PNe from the Galactic halo and 15 PNe with very low central star masses and low metallicities, for a total of 259 PNe. These results reveal from a statistical perspective the kinematic evolution of the expansion velocities of PNe in relation to changing characteristics of the central star’s wind and ionizing luminosity and as a function of the evolutionary rate determined by the central (CS) mass. The large number of PNe utilized in this work for each group of PNe under study and the homogeneity of the data provide for the first time a solid benchmark form observations for model predictions, as has been described by López et al. (2016).

Keywords

ISM: kinematics and dynamicsplanetary nebulae: generalstars: evolutionlow-mass
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 12 , Symposium S323: Planetary Nebulae: Multi-Wavelength Probes of Stellar and Galactic Evolution , October 2016 , pp. 352 - 353
Copyright
Copyright © International Astronomical Union 2017 

References

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