Conspectus Polycyclic aromatic hydrocarbon molecules (PAHs) are ubiquitously present at
high abundances in the Universe. They are detected through their infrared (IR) fluorescence …

High-resolution vibrational spectra of C–H, O–H, and N–H stretches depend on both
molecular conformation and environment as well as provide a window into the frequencies …

This article primarily discusses the utility of vibrational perturbation theory for the prediction
of X–H stretching vibrations with particular focus on the specific variant, second-order …

The characteristics of the CH stretching and out-of-plane bending modes in polycyclic
aromatic hydrocarbon molecules are investigated using anharmonic density functional …

Vibrational spectroscopy represents an active frontier for the identification and
characterization of molecular species in the context of astrochemistry and astrobiology. As …

A first look is taken at the NIRSpec 1–5 μm observations from James Webb Space
Telescope program 1591 that targets seven objects along the low-mass stellar life cycle with …

Context. JWST has taken the sharpest and most sensitive infrared (IR) spectral imaging
observations ever of the Orion Bar photodis-sociation region (PDR), which is part of the …

We present a new method to accurately describe the ionization fraction and the size
distribution of polycyclic aromatic hydrocarbons (PAHs) within astrophysical sources. To this …

Context. Mid-infrared observations of photodissociation regions (PDRs) are dominated by
strong emission features called aromatic infrared bands (AIBs). The most prominent AIBs are …

Polycyclic aromatic hydrocarbons (PAHs) have been shown to be ubiquitous in a large
variety of distinct astrophysical environments and are therefore of great interest to …