| Article | |
| Report number | astro-ph/0204331 |
| Title | The age of the Sun and the relativistic corrections in the EOS |
| Author(s) | Bonanno, A (Catania Astrophys. Observ.) ; Schlattl, H (Liverpool John Moores U., ARI ; INFN, Catania) ; Paternò, L (INFN, Catania) |
| Publication | 2002 |
| Imprint | 19 Apr 2002 |
| Number of pages | 4 |
| In: | Astron. Astrophys. 390 (2002) 1115-1118 |
| DOI | 10.1051/0004-6361:20020749 |
| Subject category | Astrophysics and Astronomy |
| Abstract | We show that the inclusion of special relativistic corrections in the revised OPAL and MHD equations of state has a strong impact on the helioseismic determination of the solar age. Models with relativistic corrections included lead to a reduction of about $0.05 - 0.08 \gi $ with respect to those obtained with the old OPAL or MHD EOS. Our best-fit value is $t_\mathrm{seis} = (4.57 \pm 0.11) \gi $ which is in remarkably good agreement with the meteoritic value for the solar age. We argue that the inclusion of relativistic corrections is important for probing the evolutionary state of a star by means of the small frequency separations $\delta\nu_{{\ell,n}}=\nu_{{\ell,n}}-\nu_{{\ell+2,n-1}}$, for spherical harmonic degrees $\ell = 0,1$ and radial order $n \gg \ell$. |
Corresponding record in: Inspire
Email contact: abo@ct.astro.it
Journalen skapades 2002-04-22, och modifierades senast 2018-09-24