PACS radial strip spectroscopy

Empirical estimates:

• Line amplitude based on *all* the TIR within PACS 47"x47" apertures, and scaling via Malhotra et al. 2001 ratios.
• Estimates are included for various line flux thresholds (1 Jy ~ 2e-17 W/m^2; 0.5 Jy ~ 1e-17 W/m^2).
• Assuming point source line emission.
• A more realistic line emission morphology can be estimated via SINGS maps of [SiII].
• Assuming a more realistic emission morphology, which requires a point source dilution factor of ~3.5 applied to the simulated line fluxes within one PACS beam.