Aromatic Hydrocarbons, Diamonds, and Fullerenes in Interstellar Space: Puzzles to Be Solved by Laboratory and Theoretical Astrochemistry

Science Direct Working Paper No S1574-0331(04)70507-X

33 Pages Posted: 24 May 2017 Last revised: 23 Dec 2017

See all articles by Kristen Sellgren

Kristen Sellgren

Ohio State University (OSU) - Astronomy Department

Date Written: April 2001

Abstract

New research is presented, and previous research is reviewed, on the emission and absorption of interstellar aromatic hydrocarbons. Emission from aromatic hydrocarbons dominate the mid-infrared emission of many galaxies, including our own Milky Way galaxy. Only recently have aromatic hydrocarbons been observed in absorption in the interstellar medium, along lines of sight with high column densities of interstellar gas and dust. Much work on interstellar aromatics has been done, with astronomical observations and laboratory and theoretical astrochemistry. In many cases the predictions of laboratory and theoretical work are confirmed by astronomical observations, but in other cases clear discrepancies exist which provide problems to be solved by a combination of astronomical observations, laboratory studies, and theoretical studies. The emphasis of this paper will be on current outstanding puzzles concerning aromatic hydrocarbons which require further laboratory and theoretical astrochemistry to resolve. This paper will also touch on related topics where laboratory and theoretical astrochemistry studies are needed to explain astrophysical observations, such as a possible absorption feature due to interstellar “diamonds” and the search for fullerenes in space.

Keywords: Miscellaneous > Other, chemistry/0104001

Suggested Citation

Sellgren, Kristen, Aromatic Hydrocarbons, Diamonds, and Fullerenes in Interstellar Space: Puzzles to Be Solved by Laboratory and Theoretical Astrochemistry (April 2001). Chemistry Preprint Archive Vol. 2001, Issue 4, pp 76-108. Available at SSRN: https://ssrn.com/abstract=2969549

Kristen Sellgren (Contact Author)

Ohio State University (OSU) - Astronomy Department ( email )

140 West 18th Avenue
Columbus, OH 43210
United States

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