The reference composition of the Sun published in Asplund, Grevesse,
Sauval & Scott (2009, Ann. Rev. Astron. & Astrophys. 47:481,
arXiv:0909.0948) is available here. Below you can also find links to machine-readable ASCII versions of the two most important tables.
Present-day solar photospheric elemental abundances, and CI meteoritic abundances. To obtain bulk/protosolar abundances, add 0.05 dex for He, 0.04 dex for heavier elements.
Present-day representative solar isotopic composition.
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