Abstract:
The equivalent widths of some selected absorption lines of C₂, CH, MgH, NH, OH and SH molecules in five facula and two photospheric models have been calculated under the assumption of LTE. The calculations reveal that the lines belonging to C₂ can be used for refining spatially limited models. Molecules MgH and SH are good candidates for homogeneous facula models. Moleculed CH, NG and OH seem to be good candidates both for the homogeneous and the spatially limited facular models.