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Low dispersion spectroscopy of point-symmetric planetary nebulae

Published online by Cambridge University Press:  30 August 2012

Lorenzo Olguín ,
Roberto Vázquez ,
María E. Contreras ,
Laurence Sabin  and
Pedro F. Guillén
Lorenzo Olguín
Affiliation:
Depto. de Investigación en Física, Universidad de Sonora, Blvd. Luis Encinas y Rosales S/N, Col. Centro, Hermosillo, Sonora, México email: [email protected]
Roberto Vázquez
Affiliation:
Instituto de Astronomía, Universidad Nacional Autónoma de México, Apdo. Postal 877, 22800 Ensenada, B.C.México email: [email protected], [email protected], [email protected], [email protected]
María E. Contreras
Affiliation:
Instituto de Astronomía, Universidad Nacional Autónoma de México, Apdo. Postal 877, 22800 Ensenada, B.C.México email: [email protected], [email protected], [email protected], [email protected]
Laurence Sabin
Affiliation:
Instituto de Astronomía, Universidad Nacional Autónoma de México, Apdo. Postal 877, 22800 Ensenada, B.C.México email: [email protected], [email protected], [email protected], [email protected]
Pedro F. Guillén
Affiliation:
Instituto de Astronomía, Universidad Nacional Autónoma de México, Apdo. Postal 877, 22800 Ensenada, B.C.México email: [email protected], [email protected], [email protected], [email protected]
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Abstract

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We present an observational study of three oint-ymmetric lanetary ebulae (PS-PNe): PC 19, He 2-429, and He 1-1, whose kinematics has been previously reported in the literature. The study includes an analysis of physical conditions and chemical abundances. We found that the abundances of He 2-429 and He 1-1 correspond to a Peimbert Type I PNe while those of PC 19 are in good agreement with a Type IV PN. Kinematic evidence derived from proper motion measurement support PC 19 classification and suggest that the progenitor star was a low-mass low-metallicity member of the galactic halo population.

Keywords

ISM: abundancesplanetary nebulae: individual (PC19, He 2-429, H 1-1)
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 7 , Symposium S283: Planetary Nebulae: An Eye to the Future , July 2011 , pp. 464 - 465
Copyright
Copyright © International Astronomical Union 2012

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