Solar Composition and its Evolution — from Core to Corona: Proceedings of an Issi Workshop 26-30 January 1998, Bern, Switzerland
Claus Fröhlich, M. Huber, S.K. Solanki, Rudolf von Steiger
Springer Science & Business Media, Dec 31, 1998 - Science - 428 pages
The discovery of chemical elements in celestial bodies and the first estimates of the chemical composition of the solar atmosphere were early results of Astrophysics - the subdiscipline of Astronomy that was originally concerned with the general laws of radiation and with spectroscopy. Following the initial quantitative abundance studies by Henry Norris Russell and by Cecilia Payne-Gaposchkin, a tremendous amount of theoretical, observa tional, laboratory and computational work led to a steadily improving body of knowledge of photospheric abundances - a body of knowledge that served to guide the theory of stellar evolution. Solar abundances determined from photospheric spectra, together with the very similar abundances determined from carbonaceous chondrites (where extensive information on isotopic composition is available as well), are nowadays the reference for all cosmic composition measures. Early astrophysical studies of the solar photospheric composition made use of atmosphere models and atomic data. Consistent abundances derived from different atmospheric layers and from lines of different strength helped to confirm and estab lish both models and atomic data, and eventually led to the now accepted, so-called "absolute" abundance values - which, for practical reasons, however, are usually given relative to the number of hydrogen nuclei.
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Solar Composition and Its Evolution - from Core to Corona
Claus Frohlich,M. Huber,S. K. Solanki
No preview available - 2014
abundance ratios Astron Astrophys Astrophysics atomic Bahcall Bochsler calculations Christensen-Dalsgaard chromosphere convection zone coronal holes Dappen density depletion diffusion elemental abundances energetic particles energy equation etal evolution Feldman Figure FIP effect flux frequency Geiss Gloeckler Gough gradient granules Grevesse heavy elements helioseismic helioseismology helium helium abundance hydrogen Iglesias ionisation ionization ions isotopic km/s layer lines low-FIP lunar magnetic field Marsch mass meteoritic mixing neutrino oscillation observed opacity OPAL oscillations p-modes parameter photospheric photospheric abundances physics plasma plumes profiles radiative relative rotation Science Reviews 85 seismic SEP events slow solar wind SOHO Solanki solar abundances solar atmosphere solar composition solar core solar energetic particles solar interior solar models solar neutrino solar wind Space Sci Space Science Reviews spectra spectrum standard solar models stars Steiger stellar streamer structure SUMER tachocline tion transition region Turck-Chieze variations Vauclair velocity Wieler Zahn
Page 417 - Geiss, J.; Hirt, P.; and Leutwyler, H.: On Acceleration and Motion of Ions in Corona and Solar Wind.