199 citations · 1.2k across the 16 of their papers we have counts for
17 papers
JWST observations of the planetary nebula NGC 6302 IV: PAH spectral characteristics, formation and evolution
Nicholas Clark, Els Peeters, Jan Cami +29
Polycyclic aromatic hydrocarbons (PAHs) and carbonaceous dust have been observed in Oxygen-rich planetary nebulae (PNe), yet their formation and evolution in these environments is…
Detection of CH3+ in the O-rich planetary nebula NGC 6302
Charmi Bhatt, Jan Cami, Els Peeters +33
Planetary nebulae are sites where ejected stellar material evolves into complex molecules, but the precise physical conditions and chemical routes that govern these processes are u…
The JWST/MIRI view of the planetary nebula NGC 6302 I.: a UV irradiated torus and a hot bubble triggering PAH formation
Mikako Matsuura, Kevin Volk, Patrick Kavanagh +34
NGC 6302 is a spectacular bipolar planetary nebula (PN) whose spectrum exhibits fast outflows and highly ionized emission lines, indicating the presence of a very hot central star…
The 9.7 and 18 um silicate absorption profiles towards diffuse and molecular cloud lines-of-sight
J. M. van Breemen, M. Min, J. E. Chiar +8
Studying the composition of dust in the interstellar medium (ISM) is crucial in understanding the cycle of dust in our galaxy. The mid-infrared spectral signature of amorphous sili…
SPITZER-IRS spectral fitting of discs around binary post-AGB stars - Corrigendum
C. Gielen, H. Van Winckel, M. Min +15
Recently, we have discovered an error in our Monte-Carlo spectral fitting routine, more specifically where the errors on the fluxes were rescaled to get a reduced chi2 of 1. The re…
Amorphous alumina in the extended atmosphere of Alpha Orionis
T. Verhoelst, L. Decin, R. Van Malderen +7
In this paper we study the extended atmosphere of the late-type supergiant Alpha Orionis. Infrared spectroscopy of red supergiants reveals strong molecular bands, some of which do…
PAHs and crystalline silicates in the post-AGB star IRAS 16279-4757
M. Matsuura, A. A. Zijlstra, F. J. Molster +7
IRAS 16279-4757 belongs to a group of post-AGB stars showing both PAH bands and crystalline silicates. We present mid-infrared images, that resolve the object for the first time. T…
The mineral composition and spatial distribution of the dust ejecta of NGC 6302
F. Kemper, F. J. Molster, C. Jaeger +1
We have analysed the full ISO spectrum of the planetary nebula NGC 6302 in order to derive the mineralogical composition of the dust in the nebula. We use an optically thin dust mo…
The carrier of the "30" micron emission feature in evolved stars. A simple model using magnesium sulfide
S. Hony, L. B. F. M. Waters, A. G. G. M. Tielens
We present 2-45 micron spectra of a large sample of carbon-rich evolved stars in order to study the ``30'' micron feature. We find the ``30'' micron feature in sources in a wide ra…
Crystalline silicate dust around evolved stars III. A correlations study of crystalline silicate features
F. J. Molster, L. B. F. M. Waters, A. G. G. M. Tielens +2
We have carried out a quantitative trend analysis of the crystalline silicates observed in the ISO spectra of a sample of 14 stars with different evolutionary backgrounds. We have…
Crystalline silicate dust around evolved stars II. The crystalline silicate complexes
F. J. Molster, L. B. F. M. Waters, A. G. G. M. Tielens
This is the second paper in a series of three in which we present an exhaustive inventory of the 49 solid state emission bands observed in a sample of 17 oxygen-rich dust shells su…
Crystalline silicate dust around evolved stars I. The sample stars
F. J. Molster, L. B. F. M. Waters, A. G. G. M. Tielens +1
This is the first paper in a series of three where we present the first comprehensive inventory of solid state emission bands observed in a sample of 17 oxygen-rich circumstellar d…
An atlas of 2.4 to 4.1 microns ISO/SWS spectra of early-type stars
A. Lenorzer, B. Vandenbussche, P. Morris +5
We present an atlas of spectra of O- and B-type stars, obtained with the Short Wavelength Spectrometer (SWS) during the Post-Helium program of the Infrared Space Observatory (ISO).…
Dust and the spectral energy distribution of the OH/IR star OH 127.8+0.0: Evidence for circumstellar metallic iron
F. Kemper, A. de Koter, L. B. F. M. Waters +2
We present a fit to the spectral energy distribution of OH 127.8+0.0, a typical asymptotic giant branch star with an optically thick circumstellar dust shell. The fit to the dust s…
The discovery of the "21" micron and "30" micron emission features in Planetary Nebulae with Wolf-Rayet central stars
S. Hony, L. B. F. M. Waters, A. G. G. M. Tielens
We report the discovery of the "21" micron and "30" micron features in the planetary nebulae around the hydrogen-deficient stars HD 826 and HD 158269. The carriers of these feature…
The complete ISO spectrum of NGC 6302
F. J. Molster, T. L. Lim, R. J. Sylvester +6
We present the combined Infrared Space Observatory Short-Wavelength Spectrometer and Long-Wavelength Spectrometer 2.4--197 micron spectrum of the Planetary Nebula NGC 6302 which co…
Crystallinity versus mass-loss rate in Asymptotic Giant Branch stars
F. Kemper, L. B. F. M. Waters, A. de Koter +1
Infrared Space Observatory (ISO) observations have shown that O-rich Asymptotic Giant Branch (AGB) stars exhibit crystalline silicate features in their spectra only if their mass-l…