Unidentified infrared emission bands are ubiquitous in many astronomical sources. These
bands are widely, if not unanimously, attributed to collective emissions from polycyclic …

Polycyclic aromatic hydrocarbons (PAHs) have long been invoked in the study of interstellar
and protostellar sources, but the unambiguous identification of any individual PAH has …

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

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 …

After decades of searching, astronomers have recently identified specific Polycyclic Aromatic
Hydrocarbons (PAHs) in space. Remarkably, the observed abundance of cyanonaphthalene …

Polycyclic aromatic hydrocarbons (PAHs) play a critical role in the reprocessing of stellar
radiation and balancing the heating and cooling processes in the interstellar medium but …

The James Webb Space Telescope (JWST, Gardner et al. 2006) is a 6.5 m space telescope
launched in 2021 December and is developed by the National Aeronautics and Space …

Polycyclic aromatic hydrocarbons (PAHs) are organic molecules containing adjacent
aromatic rings. Infrared emission bands show that PAHs are abundant in space, but only a …

Polycyclic aromatic hydrocarbons (PAHs) are among the most widespread compounds in
the universe, accounting for up to~ 25% of all interstellar carbon. Since most unsubstituted …

ABSTRACT A significantly updated version of the NASA Ames PAH IR Spectroscopic
Database, the first major revision since its release in 2010, is presented. The current version …