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Multiwavelength Intraday Variability of the BL Lac S5 0716+714
Alok C. Gupta, T. P. Krichbaum, P. J. Wiita +31
We report results from a 1 week multi-wavelength campaign to monitor the BL Lac object S5 0716+714 (on December 9-16, 2009). In the radio bands the source shows rapid (~ (0.5-1.5)…
CN Zeeman observations of the NGC 2264-C protocluster
Anaëlle J. Maury, Helmut Wiesemeyer, Clemens Thum
From an observational point of view, the role of magnetic fields in star formation remains unclear, and two main theoretical scenarios have been proposed so far to regulate the sta…
High-resolution absorption spectroscopy of the OH 2Pi 3/2 ground state line
Helmut Wiesemeyer, Rolf Güsten, Stefan Heyminck +5
The chemical composition of the interstellar medium is determined by gas phase chemistry, assisted by grain surface reactions, and by shock chemistry. The aim of this study is to m…
GREAT [CII] and CO observations of the BD+40°4124 region
Göran Sandell, Helmut Wiesemeyer, Miguel Angel Requena-Torres +5
The BD+40\degree4124 region was observed with high angular and spectral resolution with the German heterodyne instrument GREAT in CO J = 13 \rightarrow 12 and [CII] on SOFIA. These…
Probing the Mass and Structure of the Ring Nebula in Lyra with SOFIA/GREAT Observations of the [CII] 158 micron line
R. Sahai, M. R. Morris, M. W. Werner +3
We have obtained new velocity-resolved spectra of the [CII] 158 micron line towards the Ring Nebula in Lyra (NGC 6720), one of the best-studied planetary nebulae, in order to probe…
SOFIA observations of far-infrared hydroxyl emission toward classical ultracompact HII/OH maser regions
T. Csengeri, K. M. Menten, F. Wyrowski +6
The hydroxyl radical (OH) is found in various environments within the interstellar medium (ISM) of the Milky Way and external galaxies, mostly either in diffuse interstellar clouds…