Effect of molecular structure on the infrared signatures of astronomically relevant PAHs

Emission bands from polycyclic aromatic hydrocarbons (PAHs) dominate the mid-infrared spectra of a wide variety of astronomical sources, encompassing nearly all stages of stellar evolution. Despite their similarities, details in band positions and shapes have allowed a classification of PAH emission...

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Veröffentlicht in:	Astronomy and astrophysics (Berlin) 2019-01, Vol.621, p.A80
Hauptverfasser:	Bouwman, J., Castellanos, P., Bulak, M., Terwisscha van Scheltinga, J., Cami, J., Linnartz, H., Tielens, A. G. G. M.
Format:	Artikel
Sprache:	eng
Schlagworte:	Abundance Astrochemistry Banded structure Carbon Cations Celestial bodies Classification Emission Free electron lasers Infrared astronomy Infrared lasers Infrared signatures Infrared spectra Interstellar ISM: molecules Mass spectra methods: laboratory: molecular molecular processes Molecular structure Organic chemistry photon-dominated region Polycyclic aromatic hydrocarbons Quantum chemistry Radiation Relative abundance Stellar evolution Symmetry
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