i light curve ans spectra of Hen2-11 central star Virtual Observatory Resource

Authors
  1. Jones D.
  2. Boffin H.M.J.
  3. Miszalski B.
  4. Wesson R.
  5. Corradi R.L.M.,Tyndall A.A.
  6. Published by
    CDS
Abstract

We present a detailed photometric study of the central star system of the planetary nebula Hen 2-11, selected for study because of its low-ionisation filaments and bipolar morphology - traits which have been strongly linked with central star binarity. Photometric monitoring with NTT-EFOSC2 reveals a highly irradiated, double-eclipsing, post-common-envelope system with a period of 0.609 d. Modelling of the lightcurve indicates that the nebular progenitor is extremely hot, while the secondary in the system is probably a K-type main sequence star. The chemical composition of the nebula is analysed, showing Hen 2-11 to be a medium-excitation non-Type I nebula. A simple photoionisation model is constructed determining abundance ratios of C/O and N/O which would be consistent with the common-envelope cutting short the AGB evolution of the nebular progenitor. The detection of a post-common-envelope binary system at the heart of Hen 2-11 further strengthens the link between binary progeny and the formation of axisymmetric planetary nebulae with patterns of low-ionisation filaments, clearly demonstrating their use as morphological indicators of central star binarity.

Keywords
  1. eclipsing-binary-stars
  2. planetary-nebulae
  3. ccd-photometry
  4. spectroscopy
Bibliographic source Bibcode
2014A&A...562A..89J
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/562/A89
IVOA Identifier IVOID
ivo://CDS.VizieR/J/A+A/562/A89
Document Object Identifer DOI
doi:10.26093/cds/vizier.35620089

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/562/A89
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/562/A89
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/562/A89
IVOA Table Access TAP
http://tapvizier.cds.unistra.fr/TAPVizieR/tap
Run SQL-like queries with TAP-enabled clients (e.g., TOPCAT).
Web browser access HTML
https://cdsarc.cds.unistra.fr/assocdata/?obs_collection=J/A+A/562/A89

History

2014-02-11T11:55:27Z
Resource record created
2014-02-11T11:55:27Z
Created
2018-03-21T05:20:16Z
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