Paper:	“Old” versus “New” Solar Chemical Composition
Volume:	479, Progress in Physics of the Sun and Stars
Page:	481
Authors:	Grevesse, N.; Asplund, M.; Sauval, A. J.; Scott, P.
Abstract:	We follow the evolution since 1989 of element abundance determinations in the solar photosphere. We describe how the largely used high metallicity mixtures (Z = 0.02 to 0.017) of Anders & Grevesse (1989), Grevesse & Noels (1993) and Grevesse & Sauval (1998) have been obtained and explain why these mixtures should not be used anymore. They are to be replaced by the more recent mixture of Asplund et al. (2009) which results from the first comprehensive and homogeneous analysis for many decades. We describe the main characteristics of this work and discuss some impacts of this low Z (Z = 0.0134) mixture. We also comment on another recent analysis by Caffau et al. (2011) that leads to somewhat larger metal abundances.

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