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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

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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 

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