Online Material
Table 2:
Logarithmic extinction C at HH
and dereddened line intensities
on the scale H
.
Table 3:
Plasma parameters and abundances. The first row for each PN gives
parameters computed from the nominal values of the observational data. The
second and third row give the upper and lower limits respectively of these
parameters. Column (1) gives the PNG number; Col. (2) usual name; Col. (3) electron density deduced from [S II] 
6731/6716; Cols. (4) and (5)
electron temperatures from [O III] 4363/5007 and [N II] 5755/6584 respectively (the
value of 
(N II) is in parenthesis if (O III) was chosen
for all ions). Columns (6) to (12) give the
He/H, N/H, O/H, Ne/H, S/H, Ar/H, Cl/H ratios, respectively. Column (13) gives the
logarithmic extinction C at HH
derived from our spectra.
![\begin{figure}
\par\includegraphics[width=5.5cm,clip]{0841f21a.eps}\hspace*{2.5m...
...s}\hspace*{2.5mm}
\includegraphics[width=5.5cm,clip]{0841f21l.eps}
\end{figure}](img86.png) |
Figure 21: The relation of different abundance ratios with ionization parameter O++/O++O++ for Galactic bulge PNe: [WR] PNe - magenta triangles; WEL PNe - blue squares; VL PNe - green circles; normal PNe - black or grey diamonds. Filled symbols mark objects with best quality data. PNe with a quality of the derived abundance ratio above the adopted rejection limit (i.e. error >0.3 dex) are represented with open thin-line symbols. |
| Open with DEXTER | |
![\begin{figure}
\par\includegraphics[width=5.5cm,clip]{0841f22a.eps}\hspace*{2.5m...
...ps}\hspace*{2.5mm}
\includegraphics[width=5.5cm,clip]{0841f22l.eps}
\end{figure}](img87.png) |
Figure 22: The relation of different abundance ratios with ionization parameter He++/He++He++ for Galactic bulge PNe. The same notation as in Fig. 21. |
| Open with DEXTER | |