305 citations · 1.5k across the 36 of their papers we have counts for
17 papers · 1 filter
Relics of structure formation: extra-planar gas and high-velocity clouds around the Andromeda Galaxy
Tobias Westmeier, Christian Brüns, Jürgen Kerp
Using the 100-m radio telescope at Effelsberg, we mapped a large area around the Andromeda Galaxy in the 21-cm line emission of neutral hydrogen to search for high-velocity clouds…
The Effelsberg-Bonn HI Survey (EBHIS)
B. Winkel, J. Kerp, P. Kalberla +1
The new L-band 7-feed-array at the 100-m telescope in Effelsberg will be used to perform an unbiased fully sampled HI survey of the entire northern hemisphere observing the galacti…
Searching for Stars in Compact High-Velocity Clouds. II
U. Hopp, R. E. -Schulte-Ladbeck, J. Kerp
We address the hypothesis that High Velocity Clouds correspond to the "missing" dwarf galaxies of the Local Group predicted by cosmological simulations. To this end, we present opt…
The Parkes HI Survey of the Magellanic System
C. Bruens, J. Kerp, L. Staveley-Smith +6
We present the first fully and uniformly sampled, spatially complete HI survey of the entire Magellanic System with high velocity resolution, performed with the Parkes Telescope. T…
Compact high-velocity clouds around the Galaxy and M31
T. Westmeier, C. Bruens, J. Kerp
We have observed 11 compact high-velocity clouds in the 21-cm line of neutral hydrogen with the 100-m telescope in Effelsberg. Our observations show that most of the clouds have a…
Weak lensing study of dark matter filaments and application to the binary cluster A 222 and A 223
J. P. Dietrich, P. Schneider, D. Clowe +2
We present a weak lensing analysis of the double cluster system Abell 222 and Abell 223. The lensing reconstruction shows evidence for a possible dark matter filament connecting bo…
Weak lensing evidence for a filament between A222/A223
J. P. Dietrich, D. Clowe, P. Schneider +2
We present a weak lensing analysis and comparison to optical and X-ray maps of the close pair of massive clusters A222/223. Indications for a filamentary connection between the clu…
Jet emission in NGC1052 at radio, optical, and X-ray frequencies
M. Kadler, J. Kerp, E. Ros +3
We present a combined radio, optical, and X-ray study of the nearby LINER galaxy NGC 1052. Data from a short (2.3 ksec) {\it CHANDRA} observation of NGC 1052 reveal the presence of…
ESO422-G028: The Host Galaxy of a GRG
M. Jamrozy, J. Kerp, U. Klein +2
ESO422-G028 denotes the very center cD-galaxy of the giant radio source B0503-286 (Saripalli et al. 1986, Subrahmanya and Hunstead, 1986). The angular extent of the associated radi…
Searching for Stars in Compact High-Velocity Clouds. I First Results from VLT and 2MASS
U. Hopp, R. E. Schulte-Ladbeck, J. Kerp
We investigate the hypothesis that compact high-velocity clouds (CHVC) are the "missing" dwarf galaxies of the Local Group, by searching them for populations of resolved stars. To…
Searching for an Intrinsic Stellar Population in Compact High-Velocity Clouds
U. Hopp, R. E. Schulte-Ladbeck, J. Kerp
We are investigating the hypothesis that Compact High--Velocity Clouds (CHVCs) are the left-over building blocks of Local Group galaxies. To this end, we are searching for their em…
In search for the oldest star forming regions in Holmberg II
J. Kerp, F. Walter
We present an X-ray study of the irregular dwarf galaxy Holmberg II based on deep ROSAT PSPC observations. Holmberg II is one of the most famous examples of an irregular dwarf gala…
The First Complete and Fully Sampled HI Survey of the Tidal Arms of the Magellanic System
C. Bruens, J. Kerp, L. Staveley-Smith
The LMC, SMC, and the Milky Way are a spectacular set of interacting galaxies. The prominent tidal arms which protrude from the Magellanic Clouds extend for tens of kiloparsecs and…
The head-tail structure of high-velocity clouds - A survey of the northern sky
C. Bruens, J. Kerp, P. M. W. Kalberla +1
We present new observational results on high-velocity clouds (HVCs) based on an analysis of the Leiden/Dwingeloo HI survey. We cataloged all HVCs with NHI > 1 10^19 cm^-2 and found…
Hydrostatics of the Galactic Halo
P. M. W. Kalberla, J. Kerp
We investigated a hydrostatic equilibrium model of the Milky Way following Parker (1966), to constrain the large scale properties of the interstellar medium. In our approach we fou…
The gaseous Milky Way Halo
P. M. W. Kalberla, J. Kerp
In 1998 several papers claim the detection of an ubiquitous gaseous phase within the Galactic halo. Here we like to focus on the detections of X-ray emitting gas within the Galacti…
X-ray Emission from an Expanding Supergiant Shell in IC 2574
Fabian Walter, Jürgen Kerp, Neb Duric +2
We present a multi--wavelength study of a supergiant shell within the violent interstellar medium of the nearby dwarf galaxy IC 2574, a member of the M81 group of galaxies. Neutral…