Astronomy & Astrophysics

All Figures

$\begin{figure} \par\includegraphics[width=8.2cm,clip]{5104fig1.eps} \end{figure}$ Figure 1: a) Detection spectrum of H₂D⁺ 1₁₀-1₁₁ toward the center of B68 (histogram), with the best-fit Gaussian line profile superposed (thin line). The model of Sect. 3 yields an identical profile for the modified collisional excitation rates as discussed. b) Non-detection of N₂H⁺ 4-3 at the same position. c) Non-detection of H¹³CO⁺ 4-3 at the same position.
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In the text

$\begin{figure} \par\includegraphics[width=8.2cm,clip]{5104fig2.eps} \end{figure}$ Figure 2: Predicted abundances of several key species in the H₂D⁺ modeling (solid lines) and H₂ number density (dashed line) as functions of radius in B68.
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In the text

$\begin{figure} \par\includegraphics[width=8.8cm,clip]{5104fig3.eps} \end{figure}$ Figure 3: Detection spectrum of H₂D⁺ 1₁₀-1₁₁ toward the center of B68 over a baseline range of 200 km s^-1. Noise levels at ${\pm } 1\sigma$ , $\pm 2\sigma$ , and ${\pm } 3\sigma$ are indicated. The arrow indicates the $V_{\rm LSR}$ of B68 of 3.36 km s^-1.
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In the text

$\begin{figure} \par\includegraphics[width=8.2cm,clip]{5104fig1.eps} \end{figure}$	Figure 1: a) Detection spectrum of H₂D⁺ 1₁₀-1₁₁ toward the center of B68 (histogram), with the best-fit Gaussian line profile superposed (thin line). The model of Sect. 3 yields an identical profile for the modified collisional excitation rates as discussed. b) Non-detection of N₂H⁺ 4-3 at the same position. c) Non-detection of H¹³CO⁺ 4-3 at the same position.
Open with DEXTER

$\begin{figure} \par\includegraphics[width=8.2cm,clip]{5104fig2.eps} \end{figure}$	Figure 2: Predicted abundances of several key species in the H₂D⁺ modeling (solid lines) and H₂ number density (dashed line) as functions of radius in B68.
Open with DEXTER

$\begin{figure} \par\includegraphics[width=8.8cm,clip]{5104fig3.eps} \end{figure}$	Figure 3: Detection spectrum of H₂D⁺ 1₁₀-1₁₁ toward the center of B68 over a baseline range of 200 km s^-1. Noise levels at ${\pm } 1\sigma$ , $\pm 2\sigma$ , and ${\pm } 3\sigma$ are indicated. The arrow indicates the $V_{\rm LSR}$ of B68 of 3.36 km s^-1.
Open with DEXTER