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Interstellar H+3

delete2006-08-15
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Takeshi Oka *
DOI:10.1073/pnas.0601242103delete
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Abstract

Abstract

En 中文
Protonated molecular hydrogen, H-3(+), is the simplest polyatomic molecule. It is the most abundantly produced interstellar molecule, next only to H-2, although its steady state concentration is low because of its extremely high chemical reactivity. H-3(+) is a strong acid (proton donor) and initiates chains of ion-molecule reactions in interstellar space thus leading to formation of complex molecules. Here, I summarize the understandings on this fundamental species in interstellar space obtained from our infrared observations since its discovery in 1996 and discuss the recent observations and analyses of H-3(+) in the Central Molecular Zone near the Galatic center that led to a revelation of a vast amount of warm and diffuse gas existing in the region.
Keywords:
GALACTIC-CENTER
INFRARED-SPECTRUM
MOLECULAR GAS
MASSIVE STARS
CLOUDS
IONIZATION
CO
CHEMISTRY
EMISSION
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Key information extracted from the uploaded paper, including a brief overview, abstract, background, key highlights, visual analysis, and future outlook.

Journal

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Proceedings of the National Academy of Sciences of the United States of America
IF:
9.1
Papers:
10.8W
Citations:
73.5W

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