| | Line-Width Correlations in Seyfert Galaxies. Application to Mkn~463E and NGC 5548 |
 | | By comparing line-widths of species with similar ionization structure but different critical density, we argue that observed correlations of line-width with ionization potential and/or critical density are best interpreted as correlations with ionization potential alone. |
| | The well known correlations of emission-line widths (from the NLR of Seyfert galaxies) with the ionization potential and/or critical density of the emitting species have ambiguous interpretation. |
| | We also point out that NGC 5548 is anomalous in that the line widths appear to correlate with critical density rather than ionization potential. |
| www.aas.org /publications/baas/v25n4/aas183/abs/S4601.html (322 words) |
