Helioseismic measurements of elemental abundances in the sun's interior

dc.contributor.author	Kosovichev, A. G
dc.date.accessioned	2007-09-25T07:28:53Z
dc.date.available	2007-09-25T07:28:53Z
dc.date.issued	1996
dc.identifier.citation	BASI, Vol.24 No. 2 pp. 355-358	en
dc.identifier.uri	http://hdl.handle.net/2248/1822
dc.description.abstract	The method of 'secondary' helioseismic inversion, in which the equations of state and the thermal balance are used in addition to the hydrostatic equations, have been applied to determine the helium abundance in the Sun's interior. By inverting the observed p-mode frequencies, direct evidence for gravitational settling of helium has been obtained. The helium abundance inferred from the BBSO data (Libbrechh et al., 1990)using the OPAL equation of state (Rogers & Iglesias, 1993)is 0.248 ± 0.006.	en
dc.format.extent	330287 bytes
dc.format.mimetype	application/pdf
dc.language.iso	en	en
dc.publisher	Astronomical Society of India	en
dc.relation.uri	http://adsabs.harvard.edu/abs/1996BASI...24..355K	en
dc.subject	Solar oscillations	en
dc.subject	Helioseismic inversion	en
dc.subject	Helium abundance	en
dc.title	Helioseismic measurements of elemental abundances in the sun's interior	en
dc.type	Article	en