Hostname: page-component-5c6d5d7d68-wp2c8 Total loading time: 0 Render date: 2024-08-22T05:35:19.305Z Has data issue: false hasContentIssue false
  • English
  • Français

Helioseismic Constraints on the Solar Structure: Evidences of Element Segregation and Mild Mixing Below the Convection Zone

Published online by Cambridge University Press:  08 February 2017

S. Vauclair
S. Vauclair*
Affiliation:
Laboratoire d‘Astrophysique de Toulouse, 14, avenue Edouard-Belin, 31400-Toulouse, France

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

The study of the internal structure of the Sun entered a new age with helioseismology. Several ground based networks, as well as the space mission SoHO, continuously observe the solar oscillations. In particular GONG, the “Global Oscillation Network Project”, gathers six sites around the world with six identical Doppler instruments. These instruments observe the phase shift of the Ni 676.8nm line with 3 images every minute, 1.8 sites observing simultaneously. Millions of solar p-modes have been detected. The inversion of the measured frequencies yields accurate and detailed information about the sound velocity in the Sun's interior, which in turn leads to constraints on the equation of state, opacities, chemical composition. Precise informations on the differential rotation inside the Sun have also been obtained. (See the special Science issue on GONG, vol 272, 31 May 1996).

Type
III. Large-Scale Structure of the Sun
Information
Symposium - International Astronomical Union , Volume 185: New Eyes to See Inside the Sun and Stars , 1998 , pp. 135 - 140
Copyright
Copyright © Kluwer 1998 

References

Antia, H.M., Chitre, S.M.: 1997, submitted to A&A Google Scholar
Bahcall, J.N., Pinsonneault, M.H.: 1992, Reviews of Modern Physics 64, 885 Google Scholar
Balachandran, S.: 1997, preprint Google Scholar
Basu, S.: 1997, Mon. Not. R. astr. Soc., 288, 572 Google Scholar
Charbonnel, C., Vauclair, S., Zahn, J.P.: 1992, A&A 255, 191 (CVZ) Google Scholar
Cumming, A., Haxton, W.C.: 1996 Phys. Rev. Lett. 77, 4286 CrossRefGoogle Scholar
Christensen-Dalsgaard, J., Monteiro, M.J.P.F.G., Thompson, M.J.: 1995, MNRAS 276, 283 Google Scholar
Christensen-Dalsgaard, J., Proffitt, C.R., Thompson, M.J.: 1993, ApJ 408, L75 Google Scholar
Cox, A.N., Guzik, J.A., Kidman, R.B.: 1989, ApJ 342, 1187 CrossRefGoogle Scholar
Dziembowski, W.A., Goode, P.R., Pamyatnikh, A.A., Sienkiewicz, R.: 1994, ApJ 432, 417 CrossRefGoogle Scholar
Geiss, J.: 1993, Origin and Evolution of the Elements, ed. Prantzos, Vangioni-Flam & Cassé, , (Cambridge Univ. Press), 90.Google Scholar
Gloecker, G., Geiss, J.: 1997 preprint Google Scholar
Grevesse, N.: 1991, A&A 242, 488 Google Scholar
Michaud, G.: 1970, ApJ 160, 641 Google Scholar
Morel, P., Schatzman, E.: 1996, A&A 310, 982 Google Scholar
Paquette, C., Pelletier, C., Fontaine, G., Michaud, G.: 1986, ApJS 61, 177 CrossRefGoogle Scholar
Proffitt, C.R.: 1994, ApJ 425, 849 CrossRefGoogle Scholar
Richard, O., Vauclair, S., Charbonnel, C., Dziembowski, W.A.: 1996, A&A 312, 1000 Google Scholar
Richard, O., Vauclair, S.: 1997, A&A 322, 671 Google Scholar
Schatzman, E.: 1945, Ann. d'Astr. 8, 143 Google Scholar
Thoul, A.A., Bahcall, J.N., Loeb, A.: 1994, ApJ 421, 828 Google Scholar
Vauclair, S., Vauclair, G.: 1982, ARA&A 20, 37 Google Scholar
Vauclair, S., Richard, O.: 1997a, Proceedings of the Los Alamos meeting “a half century of stellar pulsation interpretations: a tribute to Arthur N. Cox”, June 16-20, 1997 Google Scholar
Vauclair, S., Richard, O.: 1997b, preprint Google Scholar