Document Type

Article

Publication Date

9-16-2021

Publication Title

Monthly Notices of the Royal Astronomical Society

Volume

507

Issue

4

First page number:

6012

Last page number:

6019

Abstract

The HD molecule is an important coolant in early universe chemistry models and a tracer of H2 in star-forming regions. Rate coefficients for collisional excitation and de-excitation of HD rotational and vibrational levels form important ingredients in astrophysical models. While collisions with He, H2, and H are the most important, available data for H + HD collisions are largely limited to temperatures less than 1000 K for the vibrational ground state, low-lying rotational levels of the v = 1 HD vibrational level, or computed without reactive contributions. Here, through explicit quantum scattering calculations, we report extensive data for rovibrational transitions in HD induced by H atoms for a range of rotational levels in v = 1 and some v = 0 levels for temperatures up to 1000 K. The significance of the computed results for astrophysical modeling is discussed.

Keywords

Astrochemistry; Early Universe; Molecular data; Molecular processes

Disciplines

Other Chemistry | Physical Processes

File Format

pdf

File Size

2107 KB

Language

English

Rights

IN COPYRIGHT. For more information about this rights statement, please visit http://rightsstatements.org/vocab/InC/1.0/


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