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Further exploration of Galactic disk abundance gradients

Published online by Cambridge University Press:  30 August 2012

Jackie B. Milingo ,
Richard B. C. Henry ,
Karen B. Kwitter  and
Bruce Balick
Jackie B. Milingo
Affiliation:
Department of Physics, Gettysburg College, Gettysburg, PA 17325, USA email: jmilingo@gettysburg.edu, henry@nhn.ou.edu, kkwitter@williams.edu
Richard B. C. Henry
Affiliation:
Department of Physics & Astronomy, University of Oklahoma, Norman, OK 73019, USA
Karen B. Kwitter
Affiliation:
Department of Astronomy, Williams College, Williamstown, MA 01267, USA
Bruce Balick
Affiliation:
Department of Astronomy, University of Washington, Seattle, WA 98195, USA email: balick@astro.washington.edu
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Abstract

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We examine the abundance gradient in the Milky Way disk via homogeneously determined data for 124 Galactic planetary nebulae (PNe). We present recent results from a detailed regression analysis of the O gradient. With O, Ne, S, Cl, and Ar available and a range of galactocentric distance (Rg) from 0.9 to 21 kpc, we present additional exploration of the disk radial gradient by statistically analyzing a series of short segments of increasing average Rg.

Keywords

Galaxy: abundancesGalaxy: evolutionISM: abundancesplanetary nebulae: general
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 7 , Symposium S283: Planetary Nebulae: An Eye to the Future , July 2011 , pp. 438 - 439
Copyright
Copyright © International Astronomical Union 2012

References

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