On the accuracy of helioseismic determination of solar helium abundance

O. Richard; W. A. Dziembowski; R. Sienkiewicz; Philip R. Goode

On the accuracy of helioseismic determination of solar helium abundance

O. Richard, W. A. Dziembowski, R. Sienkiewicz, Philip R. Goode

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Abstract

The Helium abundance in the solar envelope is one of the most important seismic observables. We investigate the accuracy of its determination taking into account uncertainties in the data and in the inversion procedure. Our best value for the helium abundance in the photosphere is Y_⊙ = 0.248. The estimated uncertainty of 0.002 is dominated by uncertainties in the inversion. This does not account for possibly larger inaccuracies in the thermodynamical data.

Original language	English (US)
Pages (from-to)	756-760
Number of pages	5
Journal	Astronomy and Astrophysics
Volume	338
Issue number	2
State	Published - Oct 10 1998

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Keywords

Sun: abundances
Sun: oscillations

Cite this

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title = "On the accuracy of helioseismic determination of solar helium abundance",

abstract = "The Helium abundance in the solar envelope is one of the most important seismic observables. We investigate the accuracy of its determination taking into account uncertainties in the data and in the inversion procedure. Our best value for the helium abundance in the photosphere is Y⊙ = 0.248. The estimated uncertainty of 0.002 is dominated by uncertainties in the inversion. This does not account for possibly larger inaccuracies in the thermodynamical data.",

keywords = "Sun: abundances, Sun: oscillations",

author = "O. Richard and Dziembowski, {W. A.} and R. Sienkiewicz and Goode, {Philip R.}",

year = "1998",

month = oct,

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language = "English (US)",

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pages = "756--760",

journal = "Astronomy and Astrophysics",

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TY - JOUR

T1 - On the accuracy of helioseismic determination of solar helium abundance

AU - Richard, O.

AU - Dziembowski, W. A.

AU - Sienkiewicz, R.

AU - Goode, Philip R.

PY - 1998/10/10

Y1 - 1998/10/10

N2 - The Helium abundance in the solar envelope is one of the most important seismic observables. We investigate the accuracy of its determination taking into account uncertainties in the data and in the inversion procedure. Our best value for the helium abundance in the photosphere is Y⊙ = 0.248. The estimated uncertainty of 0.002 is dominated by uncertainties in the inversion. This does not account for possibly larger inaccuracies in the thermodynamical data.

AB - The Helium abundance in the solar envelope is one of the most important seismic observables. We investigate the accuracy of its determination taking into account uncertainties in the data and in the inversion procedure. Our best value for the helium abundance in the photosphere is Y⊙ = 0.248. The estimated uncertainty of 0.002 is dominated by uncertainties in the inversion. This does not account for possibly larger inaccuracies in the thermodynamical data.

KW - Sun: abundances

KW - Sun: oscillations

UR - http://www.scopus.com/inward/record.url?scp=0001336993&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0001336993&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0001336993

SN - 0004-6361

VL - 338

SP - 756

EP - 760

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

IS - 2

ER -

On the accuracy of helioseismic determination of solar helium abundance

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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