Conclusions
v The acquired high-resolution spectra from Chandra and XMM-Newton
gratings need to be matched with equally high-quality atomic data.
v For x-ray collisional plasmas, most of the atomic data are satisfactory,
allowing for high precision measurements of EM structures, abundances,
densities, and UV effects.
v PLEASE USE SPECIAL CAUTION with 2p-3s LINE INTENSITIES,
NON-Fe L-SHELL IONS, and the IONIZATION BALANCE.
v For x-ray photoionized plasmas, atomic data allow for sound measurements
of outflow velocities, temperatures, column densities, and abundances.
v PLEASE USE SPECIAL CAUTION with
INNER-SHELL LINE WAVELENGTHS (especially low-Z),
the IONIZATION BALANCE (density & location),
and FLUORESCENCE YIELDS.
33