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Table 4:

Summary of our best-match model parameters.

PN G135.9+55.9 $Z\ensuremath{_{{\rm GD}}} $
Spectrum black body  
Stellar mass, M 0.595 \ensuremath{{M}_{\odot}}  
Model age, t 8982 yr  
Stellar effective temperature, \ensuremath {T_{\rm eff}} 138 049 K  
Stellar luminosity, L $2994~\ensuremath{{L}_{\odot}} $  
Central star wind, $L_{\rm wind}=0.5\dot{M}v^2_\infty$ $\dot{M}\propto Z^{0.69}$, $v_\infty\propto Z^{0.13}$  
AGB wind $\rho\propto r^{-3.25}$, $v = 10~\ensuremath{{\rm km}~{\rm s}^{-1}} $,
  $n_{r=3\times10^{16}~{\rm cm}} = 1$ $\times$ $10^5~\ensuremath{{\rm cm}^{-3}} $
Abundances, $\epsilon_i = \log~(n_i/n_{\rm H})+12$:    
    He 10.88 11.04
    C \ensuremath{\phantom{0}}7.90 \ensuremath{\phantom{0}}8.89
    N \ensuremath{\phantom{0}}7.47: \ensuremath{\phantom{0}}8.39
    O \ensuremath{\phantom{0}}6.74 \ensuremath{\phantom{0}}8.65
    Ne \ensuremath{\phantom{0}}6.96 \ensuremath{\phantom{0}}8.01
    S [5.94] \ensuremath{\phantom{0}}7.04
    Cl [4.22] \ensuremath{\phantom{0}}5.32
    Ar [5.36] \ensuremath{\phantom{0}}6.46
Distance, d 18 kpc  
Visual magnitude, $m_{\rm V}$ 19.5 mag  
Nebular density, $\langle\ensuremath{n_{\rm e}}\rangle$ 65 \ensuremath{{\rm cm}^{-3}}  
Nebular temperature, $\langle\ensuremath{T_{\rm e}}\rangle$ 21 100 K  
Nebular \ensuremath{{\rm H}\beta}-luminosity, $L(\ensuremath{{\rm H}\beta} )$ 0.193 \ensuremath{{L}_{\odot}}  
Model HWHM velocity, $V_{\rm HWHM}$ $41.8~\ensuremath{{\rm km}~{\rm s}^{-1}} $  

Notes. The element abundances $\epsilon_{i}$ are used as input in the calculation of our radiation hydrodynamic models; the values of S, Cl, and Ar are not fitted, but only scaled. $Z\ensuremath{_{{\rm GD}}} $ denotes the mean abundance distribution in the Galactic disk (cf. Sect. 4.1).

Source LaTeX | All tables | In the text

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