68 citations · 120 across the 3 of their papers we have counts for
6 papers · 1 filter
Far-infrared spectra of hydrous silicates at low temperatures - Providing laboratory data for Herschel and ALMA
H. Mutschke, S. Zeidler, Th. Posch +3
Hydrous silicates occur in various cosmic environments, and are among the minerals with the most pronounced bands in the far infrared (FIR) spectral region. Given that Herschel and…
Carbonates in space - The challenge of low temperature data
Th. Posch, A. Baier, H. Mutschke +1
Carbonates have repeatedly been discussed as possible carriers of stardust emission bands. However, the band assignments proposed so far were mainly based on room temperature powde…
Tracing the development of dust around evolved stars: The case of 47 Tuc
T. Lebzelter, T. Posch, K. Hinkle +2
We observed mid-infrared (7.5-22 mum) spectra of AGB stars in the globular cluster 47 Tuc with the Spitzer telescope and find significant dust features of various types. Comparison…
Infrared extinction by homogeneous particle aggregates of SiC, FeO and SiO2: comparison of different theoretical approaches
Anja C. Andersen, Harald Mutschke, Thomas Posch +2
Particle shape and aggregation have a strong influence on the spectral profiles of infrared phonon bands of solid dust grains. Calculating these effects is difficult due to the oft…
Infrared Extinction by Aggregates of SiC Particles
Anja C. Andersen, Harald Mutschke, Thomas Posch
Particle shape and aggregation have a strong influence on the spectral profiles of infrared phonon bands of solid dust grains. In this paper, we use a discrete dipole approximation…
Reconsidering the origin of the 21 micron feature: Oxides in carbon-rich PPNe?
Thomas Posch, Harald Mutschke, Anja C. Andersen
The origin of the so-called "21 micron" feature which is especially prominent in the spectra of some carbon-rich protoplanetary nebulae (PPNe}) is the matter of a lively debate. A…