Hostname: page-component-586b7cd67f-t7fkt Total loading time: 0 Render date: 2024-11-30T12:46:58.383Z Has data issue: false hasContentIssue false
  • English
  • Français

Gallium Overabundance in the Ap-Si Star HD 25823

Published online by Cambridge University Press:  12 April 2016

Marie-Christine Artru  and
Rubens Freire Ferrero
Marie-Christine Artru
Affiliation:
Département d’Astrophysique Fondamentale Observatoire de Meudon F-92195 Meudon Principal Cedex -, FRANCE
Rubens Freire Ferrero
Affiliation:
Observatoire de Strasbourg 11., rue de l’UniversitéF-67000 Strasbourg -, France

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.

An anomalous enhancement of the resonance line of Ga II at 1414.44 Å is observed in IUE spectra of the silicon star HD 25823. High-resolution spectrum of this star is compared to synthetic spectra calculated in the range 1406–1422 Å. The LTE abundance of gallium is evaluated to log NGa = 6.3 ± 0.5 in the scale where log NH = 12.

Type
Section IV - Non-Magnetic CP and Related Stars
Information
International Astronomical Union Colloquium , Volume 90: Upper Main Sequence Stars with Anomalous Abundances , 1986 , pp. 421 - 424
Copyright
Copyright © Reidel 1986

References

- Adelman, S.J. 1974. Ap. J. Suppl. Ser. 28, 51.Google Scholar
- Andersen, T., Eriksen, P., Poulsen, O., Ramanujam, P.S. 1979. Phys. Rev. A 20, 2621.Google Scholar
- Artru, M.C., Jamar, C. Petrini, D., Praderie, F. 1981. Astron. Astrophys. 96, 380.Google Scholar
- Didelon, D., 1985. to be published in Rev. Mex. de Astron. y. Astr.Google Scholar
- Dimitrljevic, M.S. Astron. Astrophys. 1985/ 145, 439.Google Scholar
- Froese-Fisher, C., Hansen, J.E., 1978. Phys. Rev. A17, 1956.Google Scholar
- Heacox, W.D. 1978. Ap. J. Suppl. Ser. 41, 675.Google Scholar
- Johansson, S., 1978. Physica Scripta. Vol. 18. n° 4, 217.CrossRefGoogle Scholar
- Kelly, R.L., Palumbo, L.J.. 1973. Atomic and Ionic Emission Lines below 2000 Å. NRL Report 7599. Naval Research Laboratory, Washington.Google Scholar
- Kurucz, R.L., Peytremann, E., 1975. A table of Semlemplrical gf Values. SAO. Sp Rep. n° 362.Google Scholar
- Kurucz, J.L. 1981. Semlemplrical Calculation of gf Values. Fe II. SAO Sp Rep. n° 390.Google Scholar
- Kurucz, R.L., Peytremann, E., Avrett, E.H. 1974, Blanketed Model Atmospheres for early-type Stars (Washington, Smithsonian Institution Press).Google Scholar
- Lanz, T., 1984. Astron. Astrophys. in press.Google Scholar
- Takada, M. Jugaku, J., 1981. in Upper Main Sequence CP Stars. 23rd. Liège Astrophys. Coll. Univ. de Liège. June 1981. p. 163.Google Scholar