Physical conditions in NGC 6543 from ISO and HST data and the pitfalls of temperature maps
We determine the physical conditions in NGC 6543, obtaining two different estimates of the electron temperature (T[e]) and one estimate of the electron density...
Physical Conditions in the Partially Ionized Zone of the Orion Nebula
We report the first reliable measurement of the nebular [O i] λ 5577 Angstroms emission line in the Orion nebula. Diagnostic diagrams based on the 5577 [O i]...
Physical parameters of low-ionization knots and jets in PNe: NGC 7009, K 4-47, and NGC 6543
In addition to the large-scale outflows, which form their round, elliptical, and bipolar shells, planetary nebulae (PNe) also have, usually on smaller scales...
Physical parameters of reflection nebulae in the galaxy
Given observed equivalent widths of Mg II and Mg I absorptions due to an interstellar cloud in which a late-B star is embedded, it is shown that the basic...