CH and CH/sup+/ Lines in Facula Models

Abstract

Equivalent width calcultions for CH and CH/sup+/ are carried out in three facula models. For CH, the lamda4313.662 A line of the (0-0) band of the transition /sup2/ Delta - /sup2/II of the Q1c branch, and for CH/sup+/, the lamda 4288.407 A line of the (0-0) band of the transition A /sup1/II - X/sip1/ sigma/sup+/ of the Q branch are selected. For CH, the KF and LF facula models seem to behave similarly, whereas the 7B2J model behaves differently, and gives higher equivalent width at centre of the disc. The results for the 7B2J and KF models suggest that the selected line of CH/sup+/ may be seen at the centre of the disc, whereas the LF model leads to an equivalent width which is close to the limit of detectability