SOLAR METALLICITY DERIVED FROM IN SITU SOLAR WIND COMPOSITION

Journal Article · Fri Jan 01 00:00:00 EST 2016 · Astrophysical Journal

DOI:https://doi.org/10.3847/0004-637X/816/1/13· OSTI ID:22521738

Von Steiger, R. ^[1]

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1. International Space Science Institute, Bern (Switzerland)

We use recently released solar wind compositional data to determine the metallicity of the Sun—the fraction per unit mass that is composed of elements heavier than He. We focus on a present-day solar sample available to us, which is the least fractionated solar wind from coronal holes near the poles of the Sun. Using these data, we derive a metallicity of Z = 0.0196 ± 0.0014, which is significantly larger than recent published values based on photospheric spectroscopy, but consistent with results from helioseismology.

• OSTI ID: 22521738
• Journal Information: Astrophysical Journal, Vol. 816, Issue 1; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
EMISSION SPECTROSCOPY
HELIUM
HOLES
MASS
METALLICITY
PHOTOSPHERE
SOLAR WIND
SUN