Hostname: page-component-6bf8c574d5-mggfc Total loading time: 0 Render date: 2025-02-15T18:49:47.210Z Has data issue: false hasContentIssue false
  • English
  • Français

Chemical Abundances of Planetary Nebulae Towards the Galactic Anticenter

Published online by Cambridge University Press:  26 May 2016

Roberto D.D. Costa ,
Walter J. Maciel  and
Monica M.M. Uchida
Roberto D.D. Costa
Affiliation:
IAG/USP - Departamento de Astronomia; Av. Miguel Stéfano 4200, 04301-904 - São Paulo/SP; Brazil
Walter J. Maciel
Affiliation:
IAG/USP - Departamento de Astronomia; Av. Miguel Stéfano 4200, 04301-904 - São Paulo/SP; Brazil
Monica M.M. Uchida
Affiliation:
IAG/USP - Departamento de Astronomia; Av. Miguel Stéfano 4200, 04301-904 - São Paulo/SP; Brazil

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

We report the results of spectrophotometric determinations of chemical abundances for a planetary nebulae sample located outside the solar circle, with galactocentric distances between 8 and 14 kpc. Our results show a decreasing gradient for R>10 kpc and a possible dependence of the gradient with the age of the progenitors (Work supported by FAPESP).

Type
Part VI: The Ionized Gas in Planetary Nebulae
Information
Symposium - International Astronomical Union , Volume 209: Planetary Nebulae: Their Evolution and Role in the Universe , 2003 , pp. 387 - 388
Copyright
Copyright © Astronomical Society of the Pacific 2003 

References

Chiappini, C., Matteucci, F., Gratton, R. 1997, ApJ, 477, 765 Google Scholar
Costa, R.D.D., Chiappini, C., Maciel, W.J., de Freitas Pacheco, J.A. 1997 in Advances in Stellar Evolution, ed. Rood, R.T. & Renzini, A. (Cambridge: CUP), 159 Google Scholar
Maciel, W.J., & Köppen, J. 1994, A&A 282, 436 Google Scholar