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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: lorenzo@astro.uson.mx
Roberto Vázquez
Affiliation:
Instituto de Astronomía, Universidad Nacional Autónoma de México, Apdo. Postal 877, 22800 Ensenada, B.C. México email: vazquez@astrosen.unam.mx, mcontreras@astrosen.unam.mx, lsabin@astrosen.unam.mx, fguillen@astrosen.unam.mx
María E. Contreras
Affiliation:
Instituto de Astronomía, Universidad Nacional Autónoma de México, Apdo. Postal 877, 22800 Ensenada, B.C. México email: vazquez@astrosen.unam.mx, mcontreras@astrosen.unam.mx, lsabin@astrosen.unam.mx, fguillen@astrosen.unam.mx
Laurence Sabin
Affiliation:
Instituto de Astronomía, Universidad Nacional Autónoma de México, Apdo. Postal 877, 22800 Ensenada, B.C. México email: vazquez@astrosen.unam.mx, mcontreras@astrosen.unam.mx, lsabin@astrosen.unam.mx, fguillen@astrosen.unam.mx
Pedro F. Guillén
Affiliation:
Instituto de Astronomía, Universidad Nacional Autónoma de México, Apdo. Postal 877, 22800 Ensenada, B.C. México email: vazquez@astrosen.unam.mx, mcontreras@astrosen.unam.mx, lsabin@astrosen.unam.mx, fguillen@astrosen.unam.mx
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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)

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