HeII4686 line intensities of PN Virtual Observatory Resource

Authors
  1. Tylenda R.
  2. Stasinska G.
  3. Acker A.
  4. Stenholm B.
  5. Published by
    CDS
Abstract

We have compiled the intensities of the HeII 4686 lines measured in Galactic planetary nebulae. We present a few observational diagrams related to this parameter, and discuss them with the help of theoretical diagrams obtained from simple model planetary nebulae surrounding evolving central stars of various masses. We determine the hydrogen and helium Zanstra temperature for all the objects with accurate enough data. We argue that, for Galactic planetary nebulae as a whole, the main cause for the Zanstra discrepancy is leakage of stellar ionizing photons from the nebulae.

Keywords
  1. planetary-nebulae
  2. spectroscopy
Bibliographic source Bibcode
1994A&AS..106..559T
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+AS/106/559
IVOA Identifier IVOID
ivo://CDS.VizieR/J/A+AS/106/559

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+AS/106/559
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+AS/106/559
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+AS/106/559
IVOA Table Access TAP
http://tapvizier.cds.unistra.fr/TAPVizieR/tap
Run SQL-like queries with TAP-enabled clients (e.g., TOPCAT).

History

2000-02-28T08:08:41Z
Resource record created
2000-02-28T07:12:11Z
Updated
2000-02-28T08:08:41Z
Created

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