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Interstellar polycyclic aromatic hydrocarbons: the infrared emission bands, the excitation/emission mechanism, and the astrophysical implications.
TLDR
The spectroscopic structure these PAHs and PAH-related materials produce in the UV portion of the interstellar extinction curve lie just below current detection limits but fall in the range detectable by the Hubble Space Telescope. Expand
The rich 6 to 9 vec mu m spectrum of interstellar PAHs
IR spectroscopy provides a valuable tool for the characterisation and identification of interstellar molecular species. Here, we present 6-9 mum spectra of a sample of reflection nebulae, HIIExpand
Polycyclic aromatic hydrocarbons and the unidentified infrared emission bands - Auto exhaust along the Milky Way
The unidentified infrared emission features (UIR bands) are attributed to a collection of partially hydrogenated, positively charged polycyclic aromatic hydrocarbons (PAHs). This assignment is basedExpand
Mid- and far-infrared spectroscopy of ices: optical constants and integrated absorbances.
TLDR
Laboratory spectra through the mid-infrared have been used to calculate the optical constants and integrated absorption coefficients for a variety of pure and mixed molecular ices of relevance to astrophysics. Expand
The C-H out-of-plain bending modes of PAH molecules in astrophysical environments
TLDR
It is concluded that evolved stars predominantly inject compact 100 200 C-atom PAHs into the ISM where they are subsequently processed, resulting in more open and uneven PAH structures. Expand
Near-infrared absorption spectroscopy of interstellar hydrocarbon grains
We present new 3600 - 2700/cm (2.8 - 3.7 micrometer) spectra of objects whose extinction is dominated by dust in the diffuse interstellar medium. The observations presented here augment an ongoingExpand
Modeling the unidentified infrared emission with combinations of polycyclic aromatic hydrocarbons.
TLDR
These model spectra demonstrate that mixtures of free molecular PAHs can indeed account for the overall appearance of the widespread interstellar infrared emission spectrum and give insight into the structures, stabilities, abundances, and ionization balance of the interstellar PAH population. Expand
The Organic Refractory Material in the Diffuse Interstellar Medium: Mid-Infrared Spectroscopic Constraints
This is an analysis of the 4000¨1000 cm~1 (2.5¨10 km) region of the spectrum of diUuse interstellar medium (DISM) dust compared with the spectra of 13 materials produced in the laboratory which serveExpand
The Profiles of the 3-12 Micron Polycyclic Aromatic Hydrocarbon Features*
We present spectra of the 3.3 μm and 11.2 μm polycyclic aromatic hydrocarbon (PAH) features of a large number of stellar sources, planetary nebulae, reflection nebulae, H II regions, and galaxies,Expand
The rich 6 to 9m spectrum of interstellar PAHs
IR spectroscopy provides a valuable tool for the characterisation and identification of interstellar molecular species. Here, we present 6-9m spectra of a sample of reflection nebulae, HII regions,Expand
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