Volume 500, Number 3, June IV 2009
|Page(s)||1089 - 1108|
|Section||Interstellar and circumstellar matter|
|Published online||08 April 2009|
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.
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|
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|
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.