Status of Line identifications in the Chandra LETG Spectrum of Procyon

We report on our ongoing efforts to produce a relatively complete set of X‐ray emission lines present in the Low Energy Transmission Grating (LETG) spectra of Procyon. In addition to using recently reprocessed HRC‐S/LETG spectra of Procyon, we use LETG spectra of Capella, along with recent Electron Bean Ion Trap (EBIT) laboratory data and new Flexible Atomic Code (FAC) calculations to identify the wealth of weaker lines present in the spectrum. Experimental measurements at the EBIT‐I and EBIT‐II facilities at Livermore of astrophysically abundant elements (Fe VII‐Fe X, Lepson et al. 2002, Ar IX‐ Ar XVI, Lepson et al. 2003, S VII‐ S XIV, Lepson et al. 2004) and new FAC calculations of Mg and Ne (Gu, 2008 in press) provide an opportunity to identify many of the previously unassigned lines in Procyon (Raassen et al., 2002).