An Inversion Technique to Derive Model Photospheres in Late-Type Stars from High-Resolution Spectroscopy: The Sun

Abstract

An inversion technique has been developed to recover LTE one-dimensional model photospheres for late-type stars from very high-resolution high signal-to-noise stellar line profiles. It is successfully applied to the Sun using a set of unblended Ti I, Ca I, Cr I and Fe I lines with accurate transition probabilities. Temperature stratification, continuum flux, centre-to-limb variation and wings of strong metal lines obtained from the resulting model are compared with those from other well-known theoretical and empirical solar models and show the reliability of the procedure.

Latex file (5 pages), uses html.sty, epsf.sty and cs10.sty (included); 3 PostScript figures. To appear in the Proceedings of the 10th Cambridge Workshop Cool Stars, Stellar Systems and the Sun (Cambridge, MA USA, July 1997)