Electron impact ro-vibrational transitions and dissociative recombination of H2+ and HD+ - Rate coefficients and astrophysical implications

Open Access

Fig. 5

Left panel: DR cross sections of $H_{2}^{+}$ $\mathrm{H}_{2}^{+}$ from its ground $^{2} Σ_{g}^{+}$ ${ }^{2} \Sigma_{g}^{+}$ electronic state, and the two lowest initial ro-vibrational levels: $(N_{i}^{+}, v_{i}^{+}) = (0, 0)$ $\left(N_{i}^{+}, v_{i}^{+}\right)=(0, 0)$ , black line, and $(N_{i}^{+}, v_{i}^{+}) = (1, 0)$ $\left(N_{i}^{+}, v_{i}^{+}\right)=(1, 0)$ , red line. Cross sections by Hvizdoš et al. (2025): $v_{i}^{+} = 0$ $v_{i}^{+}=0$ , orange line, and Hörnquist et al. (2024): $(N_{i}^{+}, v_{i}^{+}) = (0, 0)$ $\left(N_{i}^{+}, v_{i}^{+}\right)=(0, 0)$ , magenta line. Right panel: same for HD⁺.

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