Hostname: page-component-848d4c4894-4hhp2 Total loading time: 0 Render date: 2024-06-04T17:44:07.741Z Has data issue: false hasContentIssue false
  • English
  • Français

Non-LTE Analysis of CNO Lines in Vega

Published online by Cambridge University Press:  12 April 2016

Yoichi Takeda
Yoichi Takeda*
Affiliation:
Institute of Astronomy, The University of Tokyo, Mitaka, Tokyo, 181Japan

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.

Non–LTE calculations for neutral C, N, and O are performed to determine the accurate abundances of these elements in the atmosphere of Vega by taking the non–LTE effects realistically into consideration. It is shown that C and O are mildly deficient by ∼0.2–0.3dex while N shows an appreciably large underabundance by ∼0.8dex.

Type
V. Theory of CP Star Photospheres
Information
International Astronomical Union Colloquium , Volume 138: Peculiar versus Normal Phenomena in A-Type and Related Stars , 1993 , pp. 491 - 495
Copyright
Copyright © Astronomical Society of the Pacific 1993

References

Baschek, B., and Slettebak, A. 1988, A&A, 207, 112.Google Scholar
Gigas, D. 1986, A&A, 165, 170.Google Scholar
Hibbert, A., Biémont, E., Godefroid, M., and Vaeck, N. 1991, A&AS, 88, 505.Google Scholar
Kurucz, R.L. 1979, ApJS, 40, 1.CrossRefGoogle Scholar
Kurucz, R.L., and Peytremann, E. 1975, Smithsonian Astrophys. Obs. Spec. Rept., No. 362.Google Scholar
Lambert, D.L., Roby, S.W., and Bell, R.A. 1982, ApJ, 254, 663.CrossRefGoogle Scholar
Stürenburg, S., and Holweger, H. 1990, A&A, 237, 125.[Erratum in A&A 246, 644 (1991).]Google Scholar
Takeda, Y. 1991, A&A, 242, 455.Google Scholar
Takeda, Y. 1992, A&A, 253, 487.Google Scholar
Wiese, W.L., Smith, M.W., and Glennon, B.M. 1966, Atomic Transition Probabilities Vol.I) – Hydrogen Through Neon, NSRDS–NBS4, (U.S. Government Printing Office, Washington, D.C.).Google Scholar