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The 15-20 um emission in the reflection nebula NGC2023
Els Peeters, Alexander G. G. M. Tielens, Louis J. Allamandola +1
We present 15-20 um spectral maps towards the reflection nebula NGC2023 obtained with the Infrared Spectrograph in short-wavelength, high-resolution mode on board the Spitzer Space…
The PAH hypothesis after 25 years
Els Peeters
The infrared spectra of many galactic and extragalactic objects are dominated by emission features at 3.3, 6.2, 7.7, 8.6 and 11.2 μm. The carriers of these features remained a myst…
Fullerenes in circumstellar and interstellar environments
Jan Cami, Jeronimo Bernard-Salas, Els Peeters +1
We recently identified several emission bands in the Spitzer-IRS spectrum of the unusual planetary nebula Tc 1 with the infrared active vibrational modes of the neutral fullerene s…