On the accuracy of helioseismic determination of solar helium abundance

Authors

O. Richard, Institut de Recherche en Astrophysique et Planétologie (IRAP)
W. A. Dziembowski, Nicolaus Copernicus Astronomical Center of the Polish Academy of Sciences
R. Sienkiewicz, Nicolaus Copernicus Astronomical Center of the Polish Academy of Sciences
Philip R. Goode, Big Bear Solar Observatory

Document Type

Article

Publication Date

10-10-1998

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.

Identifier

0001336993 (Scopus)

Publication Title

Astronomy and Astrophysics

ISSN

00046361

First Page

756

Last Page

760

Issue

2

Volume

338

Recommended Citation

Richard, O.; Dziembowski, W. A.; Sienkiewicz, R.; and Goode, Philip R., "On the accuracy of helioseismic determination of solar helium abundance" (1998). Faculty Publications. 16305.
https://digitalcommons.njit.edu/fac_pubs/16305