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Interstellar polycyclic aromatic hydrocarbons: Spectroscopy, photofragmentation and photoproducts

Published online by Cambridge University Press:  12 October 2020

Jordy Bouwman Open the ORCID record for Jordy Bouwman [Opens in a new window] ,
Jerry Kamer ,
Pablo Castellanos ,
Michał Bulak Open the ORCID record for Michał Bulak [Opens in a new window] ,
Sanjana Panchagnula Open the ORCID record for Sanjana Panchagnula [Opens in a new window] ,
Junfeng Zhen ,
Arjen de Haas ,
Jos Oomens ,
Harold Linnartz Open the ORCID record for Harold Linnartz [Opens in a new window]  and
Alexander Tielens
Jordy Bouwman
Affiliation:
Laboratory for Astrophysics, Leiden Observatory, Leiden University, PO Box 9513, 2300RALeiden, the Netherlands email: [email protected]
Jerry Kamer
Affiliation:
Laboratory for Astrophysics, Leiden Observatory, Leiden University, PO Box 9513, 2300RALeiden, the Netherlands email: [email protected]
Pablo Castellanos
Affiliation:
Laboratory for Astrophysics, Leiden Observatory, Leiden University, PO Box 9513, 2300RALeiden, the Netherlands email: [email protected] Leiden Observatory, Leiden University, PO Box 9513, 2300RALeiden, the Netherlands
Michał Bulak
Affiliation:
Laboratory for Astrophysics, Leiden Observatory, Leiden University, PO Box 9513, 2300RALeiden, the Netherlands email: [email protected] Leiden Observatory, Leiden University, PO Box 9513, 2300RALeiden, the Netherlands
Sanjana Panchagnula
Affiliation:
Laboratory for Astrophysics, Leiden Observatory, Leiden University, PO Box 9513, 2300RALeiden, the Netherlands email: [email protected] Leiden Observatory, Leiden University, PO Box 9513, 2300RALeiden, the Netherlands
Junfeng Zhen
Affiliation:
CAS Key Laboratory for Research in Galaxies and Cosmology, Department of Astronomy, University of Science and Technology of China, Hefei230026, People’s Republic of China
Arjen de Haas
Affiliation:
Radboud University, Institute for Molecules and Materials, FELIX Laboratory, Toernooiveld 7, 6525EDNijmegen, the Netherlands
Jos Oomens
Affiliation:
Radboud University, Institute for Molecules and Materials, FELIX Laboratory, Toernooiveld 7, 6525EDNijmegen, the Netherlands van’t Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098XH, Amsterdam, the Netherlands
Harold Linnartz
Affiliation:
Laboratory for Astrophysics, Leiden Observatory, Leiden University, PO Box 9513, 2300RALeiden, the Netherlands email: [email protected]
Alexander Tielens
Affiliation:
Leiden Observatory, Leiden University, PO Box 9513, 2300RALeiden, the Netherlands
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Abstract

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Ubiquitous strong mid-infrared emission bands are observed towards many objects and are attributed to interstellar Polycyclic Aromatic Hydrocarbons (PAHs). PAHs are ionized, or even dissociate, when exposed to strong interstellar radiation fields. By means of ion trap mass spectrometry, light-induced dissociation patterns of PAH cations are measured and the mid-infrared spectroscopic signatures of the parent ion and its dissociation products are characterized. These results are then combined with density functional theory (DFT) calculations to obtain insight into the dissociation characteristics of interstellar PAHs at a molecular level.

Keywords

astrochemistrymethods: laboratorytechniques: spectroscopicmolecular processes
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 15 , Symposium S350: Laboratory Astrophysics: From Observations to Interpretation , April 2019 , pp. 353 - 355
Copyright
© International Astronomical Union 2020

References

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