| Autor: |
Forrey, R. C., Babb, J. F., Courtney, E. D. S., McArdle, R. T., Stancil, P. C. |
| Předmět: |
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| Zdroj: |
Astrophysical Journal; 7/20/2020, Vol. 898 Issue 1, p1-4, 4p |
| Abstrakt: |
From four independent calculations using three different theoretical approaches, rate coefficients for the formation of HeH+ via the radiative association of He+ and H were computed. Good agreement is found between our new calculations and prior results obtained two decades ago for kinetic temperatures between ∼800 and 20,000 K. This finding is inconsistent with a recent claim in the literature of a wide variation in published values and establishes the robustness of our knowledge of this process for the formation of HeH+. The implications of the current results to the first detection of HeH+ and its modeled abundance in the planetary nebula NGC 7027 are discussed. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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