All Figures

$\begin{figure} \par\includegraphics[width=8.1cm,clip]{fig01.eps} % \end{figure}$ Figure 1: Evolutionary sequences of an ONe electron-degenerate object for increasing abundances of ²⁴Mg. The abundances of ²⁴Mg are, respectively, 3%, 10%, 15% and 25% by mass. The model with $X(^{24}\rm Mg)=0.15$ undergoes an off-center explosion and the model with $X(^{24}\rm Mg)=0.25$ produces a low density explosion, leading to the complete disruption of the degenerate core.
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In the text

$\begin{figure} \par\includegraphics[width=8.1cm,clip]{fig02.eps} % \end{figure}$ Figure 2: Evolution of an ONe object with the Schwarzschild criterion (solid line). The dotted line corresponds to a case in which convective mixing is inhibited. In the case with mixing, the effects of a convective Urca shell are evident. The peak corresponds to the point where the nuclides of mass 24 able to capture electrons (namely ²⁴Mg and ²⁴Na) are exhausted throughout the convective core.
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In the text

$\begin{figure} \par\includegraphics[width=8.1cm,clip]{fig03.eps} % \end{figure}$ Figure 3: Evolution on the log( $\rho _{\rm c}$ )-log(T $_{\rm c}$ ) plane for the models incorporating abundances of ¹²C ranging from 0.01 to 0.06. The only model that fails to produce an explosion at moderate densities is that corresponding to $X(^{12}\rm C)=0.01$ . For all these calculations, the Ledoux criterion has been adopted.
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In the text

$\begin{figure} \par\includegraphics[width=8.1cm,clip]{fig04.eps} % \end{figure}$ Figure 4: Same as Fig. 3, but using the Schwarzschild convective criterion. Only the model with $X(^{12}\rm C)=0.01$ fails to trigger an explosion at moderate densities.
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In the text

$\begin{figure} \par\includegraphics[width=8.1cm,clip]{fig05.eps} % \end{figure}$ Figure 5: Same as Figs. 3 and 4, but with convection artificially inhibited. In this case, even a 2% abundance of ¹²C fails to trigger a moderate density explosion.
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In the text

$\begin{figure} \par\includegraphics[width=8.1cm,clip]{fig06.eps} % \end{figure}$ Figure 6: Evolution in the $\log(\rho_{\rm c})-\log(T_{\rm c}$ ) plane of an ONe electron-degenerate object with the abundances given by Ritossa et al. (1994). The effect of the Urca pairs involving ²³Na and ²⁵Mg is apparent as a sudden decrease in $T_{\rm c}$ near $\log\rho_{\rm c}=9.2$ . The convective criterion adopted was that of Ledoux.
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In the text

$\begin{figure} \par\includegraphics[width=8.1cm,clip]{fig01.eps} % \end{figure}$	Figure 1: Evolutionary sequences of an ONe electron-degenerate object for increasing abundances of ²⁴Mg. The abundances of ²⁴Mg are, respectively, 3%, 10%, 15% and 25% by mass. The model with $X(^{24}\rm Mg)=0.15$ undergoes an off-center explosion and the model with $X(^{24}\rm Mg)=0.25$ produces a low density explosion, leading to the complete disruption of the degenerate core.
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$\begin{figure} \par\includegraphics[width=8.1cm,clip]{fig03.eps} % \end{figure}$	Figure 3: Evolution on the log( $\rho _{\rm c}$ )-log(T $_{\rm c}$ ) plane for the models incorporating abundances of ¹²C ranging from 0.01 to 0.06. The only model that fails to produce an explosion at moderate densities is that corresponding to $X(^{12}\rm C)=0.01$ . For all these calculations, the Ledoux criterion has been adopted.
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$\begin{figure} \par\includegraphics[width=8.1cm,clip]{fig04.eps} % \end{figure}$	Figure 4: Same as Fig. 3, but using the Schwarzschild convective criterion. Only the model with $X(^{12}\rm C)=0.01$ fails to trigger an explosion at moderate densities.
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$\begin{figure} \par\includegraphics[width=8.1cm,clip]{fig05.eps} % \end{figure}$	Figure 5: Same as Figs. 3 and 4, but with convection artificially inhibited. In this case, even a 2% abundance of ¹²C fails to trigger a moderate density explosion.
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$\begin{figure} \par\includegraphics[width=8.1cm,clip]{fig06.eps} % \end{figure}$	Figure 6: Evolution in the $\log(\rho_{\rm c})-\log(T_{\rm c}$ ) plane of an ONe electron-degenerate object with the abundances given by Ritossa et al. (1994). The effect of the Urca pairs involving ²³Na and ²⁵Mg is apparent as a sudden decrease in $T_{\rm c}$ near $\log\rho_{\rm c}=9.2$ . The convective criterion adopted was that of Ledoux.
Open with DEXTER