Knowledge Bank

Emergent fluxes predicted by the model atmospheres of Alexander, Collins, Fay and Johnson (1971, 26th Molecular Spectroscopy Symposium) are compared with Coude spectral tracings of 19 Psc and WZ Cas at 0.2{\AA} resolution from 6700{\AA}--- 6712{\AA}. The line opacity is that of the $\Delta v=4$ and 5 sequences of the $\mathrm{<mrow\; data-mjx-texclass="ORD">12</mrow>}C14N$ and $\mathrm{<mrow\; data-mjx-texclass="ORD">13</mrow>}C14N$ radicals, as well as the Li 6707.8 resonance line. Results are presented for $Teff=3800 and 3400\circ K$ and $\mathrm{<mrow\; data-mjx-texclass="ORD">12</mrow>}C/13C$ ratios of 2, 5 and 20 as well as Li/H ratios of $10-12$ to $10-8$.