Abundances of HDE 341617 Virtual Observatory Resource

Authors
  1. Arellano Ferro A.
  2. Giridhar S.
  3. Mathias P.
  4. Published by
    CDS
Abstract

Detailed atmospheric abundances have been calculated for a sample of A-G supergiant stars with IR fluxes and/or high galactic latitudes. HD 172481 and HD 158616 show clear indications of being post-AGB stars that have experienced third dredge-up. HD 158616 is carbon-rich while the abundance pattern of HD 172481 and its large Li enhancement gives support to the hot bottom burning scenario that explains paucity of carbon-rich stars among AGB stars. HD 172324 is very likely a hot post-AGB star that shows a strong carbon deficiency. HD 725, HD 218753 and HD 331319 also appear to be evolved objects between the red giant and the AGB. HD 9167, HD 173638 with a few exceptions, reflect solar abundances and no signs of post red giant evolution. They are most likely young massive disk supergiants. Further analysis of proto-Planetary Nebula HDE 341617 reveals that He lines show signs of velocity stratification. The emission lines have weakened considerably since 1993. The envelope expands at 19km/s relative to the star. Atmospheric abundances, evolutionary tracks and isochrones are used to estimate masses and ages of all stars in the sample.

Keywords
  1. protostars
  2. planetary-nebulae
  3. line-intensities
  4. radial-velocity
Bibliographic source Bibcode
2001A&A...368..250A
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/368/250
IVOA Identifier IVOID
ivo://CDS.VizieR/J/A+A/368/250
Document Object Identifer DOI
doi:10.26093/cds/vizier.33680250

Access

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http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/368/250
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/368/250
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/368/250
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http://tapvizier.cds.unistra.fr/TAPVizieR/tap
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History

2003-12-29T21:55:52Z
Resource record created
2003-12-29T20:56:03Z
Updated
2003-12-29T21:55:52Z
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