96 citations · 206 across the 6 of their papers we have counts for
6 papers
PAH in three dimensional Monte Carlo radiativtive transfer
Ralf Siebenmorgen, Frank Heymann, Endrik Krügel
We present a Monte Carlo (MC) radiative transfer code for complex three dimensional dust distributions and include transiently heated PAH. The correctness of the code is confirmed…
PAH destruction and survival in the disks of T Tauri stars
Ralf Siebenmorgen, Endrik Krügel
In Spitzer observations of Tauri stars and their disks, PAH features are detected in less than 10% of the objects, although the stellar photosphere is sufficiently hot to excite PA…
High mass star formation in the infrared dark cloud G11.11-0.12
Thushara Pillai, Friedrich Wyrowski, Karl M. Menten +1
We report detection of moderate to high-mass star formation in an infrared dark cloud (G11.11-0.12) where we discovered class II methanol and water maser emissions at 6.7 GHz and 2…
Discovery of 10 micron silicate emission in quasars. Evidence of the AGN unification scheme
R. Siebenmorgen, M. Haas, E. Kr"ugel +1
According to the unified scheme, AGN are surrounded by a dust-torus, and the observed diversity of AGN properties results from the different orientations relative to our line of si…
PAHs in Circumstellar Disks around Herbig Ae/Be stars
Emilie Habart, Antonella Natta, Endrik Krügel
We investigate the presence and properties of PAHs on the surface of circumstellar disks around Herbig Ae/Be stars by comparing the predictions of disk models with observations. We…
BD+30 3639: The Infrared Spectrum During Post-AGB Stellar Evolution
R. Siebenmorgen, A. A. Zijlstra, E. Kruegel
We present a radiative-transfer calculation which reproduces the infrared spectrum of the planetary nebula BD~+303639. We calculate the transfer process through absorptio…