The Mystery of Unidentified Infrared Emission Bands

Abstract

A family of unidentified infrared emission (UIE) bands has been observed throughout the Universe. The current observed spectral properties of the UIE bands are summarized. These properties are discussed in the frameworks of different models of the chemical carriers of these bands. The UIE carriers represent a large reservoir of carbon in the Universe, and play a significant role in the physical and chemical processes in the interstellar medium and galactic environment. A correct identification of the carrier of the UIE bands is needed to use these bands as probes of galactic evolution.

References in corpus (16)

• Infrared Emission from Interstellar Dust. IV. The Silicate-Graphite-PAH Model in the Post-Spitzer Era
• Detection of Two Interstellar Polycyclic Aromatic Hydrocarbons via Spectral Matched Filtering
• The evolution of amorphous hydrocarbons in the ISM: dust modelling from a new vantage point
• Pure hydrocarbon cycles in TMC-1: Discovery of ethynyl cyclopropenylidene, cyclopentadiene and indene
• Variations of the Mid-IR Aromatic Features Inside and Among Galaxies
• Discovery of the Pure Polycyclic Aromatic Hydrocarbon Indene ($c$-C${}_9$H${}_8$) with GOTHAM Observations of TMC-1
• Formation of fullerenes in H-containing Planetary Nebulae
• Excitation of Polycyclic Aromatic Hydrocarbon (PAH) Emission: Dependence on Size Distribution, Ionization, and Starlight Spectrum and Intensity
• Carbon-rich dust past the asymptotic giant branch: aliphatics, aromatics, and fullerenes in the Magellanic Clouds
• Spatial distribution and interpretation of the 3.3 \mum PAH emission band of the Red Rectangle
• On the viability of the PAH model as an explanation of the unidentified infrared emission features
• The 11.2 $\mu$m emission of PAHs in astrophysical objects
• On the origin of the 11.3 micron unidentified infrared emission feature
• On the Origin of the 3.3 Micron Unidentified Infrared Emission Feature
• Petroleum, coal and other organics in space
• The 3.3 $\mu$m Infrared Emission Feature: Observational and Laboratory Constraints on Its Carrier

Cited by in corpus (7)

• Buckyball-metal complexes as promising carriers of astronomical unidentified infrared emission bands
• Machine-learning identified molecular fragments responsible for infrared emission features of polycyclic aromatic hydrocarbons
• Planetary Nebulae Research: Past, Present, and Future
• Towards a reliable prediction of the infrared spectra of cosmic fullerenes and their derivatives in the JWST era
• The Dustiest Galactic S Stars: Mid-Infrared Spectra from SOFIA/FORCAST
• Current Unsolved Problems in Planetary Nebulae Research
• The Influence of Aliphatic Components on the Aromatic Emission Characteristics of Polycyclic Aromatic Hydrocarbons