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- Title
Small molecules, big impact: a tale of hydrides past, present, and future.
- Authors
Jacob, Arshia M.
- Abstract
Formed at an early stage of gas-phase ion-molecule chemistry, hydrides – molecules containing a heavy element covalently bonded to one or more hydrogen atoms – play an important role in interstellar chemistry as they are the progenitors of larger and more complex species in the interstellar medium. In recent years, the careful analysis of the spectral signatures of hydrides have led to their use as tracers of different constituents, and phases of the interstellar medium and in particular the more diffuse environments. Diffuse clouds form an essential link in the stellar gas life-cycle as they connect both the late and early stages of stellar evolution. As a result, diffuse clouds are continuously replenished by material which makes them reservoirs for heavy elements and hence ideal laboratories for the study of astrochemistry. This review will journey through a renaissance of hydride observations detailing puzzling hydride discoveries and chemical mysteries with special focus carbon-bearing hydrides to demonstrate the big impact of these small molecules and ending with remarks on the future of their studies.
- Subjects
SMALL molecules; HEAVY elements; INTERSTELLAR medium; STELLAR evolution; GIBBERELLINS; ASTROCHEMISTRY; HYDROGEN atom; HYDRIDES
- Publication
Astrophysics & Space Science, 2023, Vol 368, Issue 9, p1
- ISSN
0004-640X
- Publication type
Article
- DOI
10.1007/s10509-023-04229-8