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Galactic Abundance Patterns via Peimbert Types I & II PNe

Published online by Cambridge University Press:  15 December 2006

J. B. Milingo ,
K. B. Kwitter ,
R. B. C. Henry  and
S. P. Souza
J. B. Milingo
Affiliation:
Dept. of Physics & Astronomy, Franklin & Marshall College, Lancaster, PA 17604, USA email: jmilingo@fandm.edu
K. B. Kwitter
Affiliation:
Dept. of Astronomy, Williams College, Williamstown, MA 01267 USA email: kkwitter@williams.edu, ssouza@williams.edu
R. B. C. Henry
Affiliation:
Dept. of Physics & Astronomy, University of Oklahoma, Norman, OK 73019 USA email: henry@nhn.ou.edu
S. P. Souza
Affiliation:
Dept. of Astronomy, Williams College, Williamstown, MA 01267 USA email: kkwitter@williams.edu, ssouza@williams.edu
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Abstract

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We present total element abundances based upon newly acquired spectrophotometry of a sample of $>$120 Galactic PNe. We continue to explore the use of the near-IR [S III] features to determine S$^{+2}$ abundances and to improve total extrapolated sulfur - a useful metallicity tracer. With this compilation we explore abundance patterns in PNe that reveal signatures of stellar evolution and nucleosynthesis as well as larger-scale galactic chemical evolution.

Keywords

ISM: planetary nebulae: generalGalaxy: abundances
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S234: Planetary Nebulae in our Galaxy and Beyond , April 2006 , pp. 459 - 460
Copyright
© 2006 International Astronomical Union