Abundance gradients in planetary nebulae Virtual Observatory Resource

Authors
  1. Maciel W.J.
  2. Quireza C.
  3. Published by
    CDS
Abstract

Radial abundance gradients of the element ratios O/H, Ne/H, S/H, and Ar/H are determined on the basis of a sample of disk planetary nebulae. The behaviour of the gradients at large distances from the galactic centre, R>R_0_=7.6kpc, is emphasized. It is concluded that the derived gradients are consistent with an approximately constant slope in the inner parts of the Galaxy, and some flattening for distances larger than R_0_. A comparison is made with previous determinations using both photoionized nebulae and young stars, and some consequences on theoretical models for the chemical evolution of the galactic disk are discussed.

Keywords
  1. planetary-nebulae
  2. chemically-peculiar-stars
Bibliographic source Bibcode
1999A&A...345..629M
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/345/629
IVOA Identifier IVOID
ivo://CDS.VizieR/J/A+A/345/629
Document Object Identifer DOI
doi:10.26093/cds/vizier.33450629

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/345/629
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/345/629
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/345/629
IVOA Table Access TAP
http://tapvizier.cds.unistra.fr/TAPVizieR/tap
Run SQL-like queries with TAP-enabled clients (e.g., TOPCAT).

History

1999-05-06T10:18:35Z
Resource record created
1999-05-06T10:18:35Z
Created
1999-05-06T10:18:44Z
Updated

Contact

Name
CDS support team
Postal Address
CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France
E-Mail
cds-question@unistra.fr