The Solar Argon Abundance

Details The Solar Argon Abundance The Solar Argon Abundance

2007-10-24

arxiv.org/abs/0710.4523v1

Astronomy and Astrophysics

Astrophysics

14 pages, 1 figure, 1 table; submitted to Astrophysical Journal

Scientific paper

10.1086/524725

The solar argon abundance cannot be directly derived by spectroscopic observations of the solar photosphere. The solar Ar abundance is evaluated from solar wind measurements, nucleosynthetic arguments, observations of B stars, HII regions, planetary nebulae, and noble gas abundances measured in Jupiter's atmosphere. These data lead to a recommended argon abundance of N(Ar) = 91,200(+/-)23,700 (on a scale where Si = 10^6 atoms). The recommended abundance for the solar photosphere (on a scale where log N(H) = 12) is A(Ar)photo = 6.50(+/-)0.10, and taking element settling into account, the solar system (protosolar) abundance is A(Ar)solsys = 6.57(+/-)0.10.

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