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Table 2:

Observational data for analyzed planetary nebulae.

Name
C $_{\rm opt}$ O++/O He++/He log $n_{\rm e}$ $\theta$ $V_{\rm exp}$ t $_{\rm kin}$ log S $_{\rm H\beta }$ log T $_{\rm Zan}$ $M_{\rm gas}$ $M_{\rm dust}$

      [cm-3] [ $^{\prime\prime}$] [km s-1] [year] [erg cm-2 s-1 sr-1] [K] [$M_{\odot }$] [10 $^{-3}~M_\odot$ ]

H 1-16
2.50 0.880 0.097 3.77 2.0 20$^{\rm R}$ 2000r -0.83 - 0.152 0.38
Hb 6 2.10 0.901 0.115 3.53 6.0 20 $^{\rm RRA}$   500s -0.95 >4.48 0.2 1.20
M 2-10 1.32 0.625 - 3.10 4.2     -2.00 - 0.208 1.00
H 1-50 0.68 0.959 0.093 3.69 1.4 23 $^{\rm GZ,R}$ 1300 -0.62 4.77 0.148 0.18

H 1-20
2.31 0.896 0.013 3.57 3.3 18$^{\rm R}$ 3800r -1.30 - 0.223 0.68
Th 3-4 2.83 0.946 0.078 4.20 1.5     -0.60 - 0.055 0.49
M 3-38 2.06 0.968 0.238 3.49 1.8 15$^{\rm R}$ 2400r -1.05 - 0.143 1.04
M 3-8 1.93 0.860 - 3.73 3.2     -1.48 4.50 0.095 0.53

H 1-40
2.52 0.939 - 4.26 3.0 20 $^{\rm GZ,R}$ 1000 -1.23 - 0.044 0.66
M 2-23 1.28 0.924 - 4.00 1.0 14$^{\rm R}$ 1500r -0.15 4.73 0.108 0.02
He 2-260 0.76 0.012 - 4.16 1.0 17$^{\rm G}$ 3500 -0.65 4.41 0.2 0.74
H 1-32 1.63 0.787 - 3.74 1.0 11$^{\rm R}$ 1900r -1.37 - 0.012 0.07
H 1-35 1.33 0.525 0.002 4.26 1.5 10$^{\rm GZ}$ 3100 -0.26 4.65 0.103 0.20

Notes. The reported quantities are: logarithmic extinction at H$\beta $ (Col. 2); ionization parameters O++/(O++O++) and He++/(He++He++) (Cols. 3 and 4); electron density from [S II] $\lambda$6717/6731 line ratio (Col. 5); nebular diameter (Col. 6); nebular expansion velocity (Col. 7); kinematic age (Col. 8); H$\beta $ surface brightness (Col. 9); stellar temperature from Zanstra hydrogen method (Col. 10); mass of ionized nebular gas (Col. 11) and mass of dust (Col. 12).
Kinematic ages t $_{\rm kin}$ are from Gesicki & Zijlstra (2000) and Gesicki et al. (2006) or calculated assuming distance 8.5 kpc (r) or from Shklovski method (s).

References. $\rm RRA$ - Robinson et al. (1982), $\rm GZ $ - Gesicki & Zijlstra (2000), $\rm G $ - Gesicki et al. (2006), $\rm R $ - Richer et al. (2008).


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