Hostname: page-component-cd9895bd7-mkpzs Total loading time: 0 Render date: 2024-12-25T15:58:16.836Z Has data issue: false hasContentIssue false
  • English
  • Français

Abundance Effects for the A0–G2 Stars in the Geneva System

Published online by Cambridge University Press:  14 August 2015

B. Hauck
B. Hauck*
Affiliation:
Institut d'Astronomie de l'Université de Lausanne et Observatoire de Genève, Switzerland

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.

The abundance effects on the tri-dimensional representation for the A0-G2 stars in the Geneva system are reviewed. B2–V1 and d are not affected by the Am characteristic, but B2–V1 is too blue (blocking effect on V1) and d smaller for the Ap stars. For B2–V1 ≥ 0.230, we have a residual effect Δ(B2–V1) = 1.20 (Δm∗2 + 0.060). d is also affected and the residual effect is Δd = −0.4 Δm2 for Δm2 ≥ −0.060 and Δd = −1.1 Δ(B2–V1) −0.024 for Δm2 < −0.060.

The abundance effects on the relations between B2–V1 and the parameters of temperature in other systems are studied.

Type
Part III/Derivation of Abundances Through Photometric and Spectroscopic Methods
Information
Symposium - International Astronomical Union , Volume 72: Abundance Effects in Classification , 1976 , pp. 67 - 69
Copyright
Copyright © Reidel 1976 

References

Cayrel, R.: 1968, Astrophys. J. 151, 1005.Google Scholar
Gerbaldi, M., Hauck, B., and Morguleff, N.: 1974, Astron. Astrophys. 30, 105.Google Scholar
Hauck, B.: 1967, Publ. Obs. Genève , No. 74.Google Scholar
Hauck, B.: 1968, Publ. Obs. Genève , No. 78.Google Scholar
Hauck, B.: 1973a, in Hauck, B. and Westerlund, B. E. (eds.) Problems of Calibration of Absolute Magnitudes and Temperature Scales, IAU Symp. 54, 117.Google Scholar
Hauck, B.: 1973b, Astron. Astrophys. Suppl. 10, 385.Google Scholar
Hauck, B.: 1975a, in Philip, A. G. D. (ed.), Multicolor Photometry and the Theoretical HR Diagram (in press).Google Scholar
Hauck, B.: 1975b in Jaschek, C. (ed.), Physics of Ap Stars, IAU Coll. No. 32 (in press).Google Scholar
Hauck, B. and Magnenat, P.: 1975, in Philip, A. G. D. (ed.), Multicolor Photometry and the Theoretical HR Diagram (in press).Google Scholar
Hauck, B. and van 't Veer, Cl.: 1970, Astron. Astrophys. 7, 219.Google Scholar
Oke, J. B. and Conti, P. S.: 1966, Astrophys. J. 143, 134.Google Scholar
Osawa, K.: 1965, Annals Tokyo Obs. 2nd ser. IX, No. 3.Google Scholar
Sandage, A. R. and Eggen, O. J.: 1969, Monthly Notices Roy. Astron. Soc. 119, 278.Google Scholar
Schild, R., Peterson, D. M., and Oke, J. B.: 1971, Astrophys. J. 166, 95.Google Scholar