New PAH mode at 16.4 microns

C. Moutou; L. Verstraete; A. Leger; K. Sellgren; W. Schmidt

New PAH mode at 16.4 microns

Astrophysics 2007-05-23 v1

Authors: C. Moutou , L. Verstraete , A. Leger , K. Sellgren , W. Schmidt

Abstract

The detection of a new 16.4 micron emission feature in the ISO-SWS spectra of NGC 7023, M17, and the Orion Bar is reported. Previous laboratory experiments measured a mode near this wavelength in spectra of PAHs (Polycyclic Aromatic Hydrocarbons), and so we suggest the new interstellar 16.4 micron feature could be assigned to low-frequency vibrations of PAHs. The best carrier candidates seem to be PAH molecules containing pentagonal rings.

Keywords

polycyclic aromatic hydrocarbon

Cite

@article{arxiv.astro-ph/9912559,
  title  = {New PAH mode at 16.4 microns},
  author = {C. Moutou and L. Verstraete and A. Leger and K. Sellgren and W. Schmidt},
  journal= {arXiv preprint arXiv:astro-ph/9912559},
  year   = {2007}
}

Related papers

View all related →