Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- University of TurinIT1.2k papers
- University of ManchesterGB1.1k papers
- University of FerraraIT1.1k papers
- Budker Institute of Nuclear PhysicsRU1.1k papers
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di FrascatiIT1k papers
- Centre National de la Recherche ScientifiqueFR1k papers
- Johannes Gutenberg University MainzDE1k papers
- University of PerugiaIT1k papers
- Uppsala UniversitySE912 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di FerraraIT903 papers
- University of GroningenNL898 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR888 papers
30 papers · 2 filters
The morphology of minor axis gaseous outflows in edge-on Seyfert galaxies
T. P. Robitaille, J. Rossa, D. J. Bomans +1
(Abridged) Spiral galaxies often have extended outflows that permeate beyond the region of the disk. Such outflows have been seen both in starburst galaxies, actively star forming…
H.E.S.S. observations of the supernova remnant RX J0852.0-4622: shell-type morphology and spectrum of a widely extended VHE gamma-ray source
HESS Collaboration, F. A. Aharonian
The shell-type supernova remnant RX J0852.0-4622 was observed with the High Energy Stereoscopic System (H.E.S.S.) of Atmospheric Cherenkov Telescopes between December 2004 and May…
Overluminous HNC Line Emission in Arp220, NGC4418 and Mrk231 - Global IR Pumping or XDRs?
S. Aalto, M. Spaans, M. C. Wiedner +1
We find that the HNC J=3-2 emission is brighter than the HCN 3-2 emission by factors of 1.5 to 2.3 in the ultraluminous mergers Arp220 and Mrk231 and the luminous IR galaxy NGC4418…
Primary particle acceleration above 100 TeV in the shell-type Supernova Remnant RX J1713.7-3946 with deep H.E.S.S. observations
The HESS Collaboration, F. Aharonian
We present deep H.E.S.S. observations of the supernova remnant (SNR) RX J1713.7-3946. Combining data of three years - from 2003 to 2005 - we obtain significantly increased statisti…
NGC5719/13: interacting spirals forming a counter-rotating stellar disc
D. Vergani, A. Pizzella, E. M. Corsini +4
(Context) When a galaxy acquires material from the outside, it is likely that the resulting angular momentum of the accreted material is decoupled from that of the pre-existing gal…
Magnetic fields and ionized gas in nearby late type galaxies
K. T. Chyzy, D. J. Bomans, M. Krause +3
In order to analyze the importance of the star formation rate in generating and amplifying magnetic fields in the interstellar medium we obtained deep total power and polarization…
The Morphology of M17-UC1 - A Disk Candidate Surrounding a Hypercompact HII Region
M. Nielbock, R. Chini, V. H. Hoffmeister +4
We investigate the morphology and the evolutionary stage of the hypercompact HII region M17-UC1 using observations at infrared wavelengths and NIR radiative transfer modeling. For…
H.E.S.S. observations of the Galactic Center region and their possible dark matter interpretation
H. E. S. S. collaboration, :, F. A. Aharonian
The detection of gamma-rays from the source HESS J1745-290 in the Galactic Center (GC) region with the H.E.S.S. array of Cherenkov telescopes in 2004 is presented. After subtractio…
Near-Infrared interferometry of Eta Carinae with high spatial and spectral resolution using the VLTI and the AMBER instrument
G. Weigelt
We present the first NIR spectro-interferometry of the LBV Eta Carinae. The K band observations were performed with the AMBER instrument of the ESO Very Large Telescope Interferome…
The detection of the (J,K)=(18,18) line of NH3
T. L. Wilson, C. Henkel, S. Huettemeister
The first astronomical detection of the metastable () = (18,18) line of NH3 is reported. With 3130 K above the ground state, this is the NH3 line with by far the highest energ…
Dwarf galaxies in Hickson Compact Groups
Dominik Bomans, Elvira Krusch, Ralf-Juergen Dettmar +2
We observed 5 Hickson Compact Groups with the ESO/MPI 2.2m telescope and WFI to investigate the dwarf galaxy content and distribution in these galaxy groups. Our deep imaging and c…
2.3 micron CO emission and absorption from young high-mass stars in M17
V. H. Hoffmeister, R. Chini, C. M. Scheyda +3
We are studying the extremely young cluster of M17 to investigate the birth of high-mass stars and the initial mass function. Deep JHKL imaging and K-band spectroscopy from the VLT…
An optical search for Low Surface Brightness Galaxies in the Arecibo HI Strip Survey
Clemens Trachternach, Dominik J. Bomans, Lutz Haberzettl +1
In order to estimate the contribution of low surface brightness (LSB) galaxies to the local (z<0.1) galaxy number density, we performed an optical search for LSB candidates in a 15…
Size and properties of the narrow-line region in Seyfert-1 galaxies from spatially-resolved optical spectroscopy
Nicola Bennert, Bruno Jungwiert, Stefanie Komossa +3
Spatially resolved emission-line spectroscopy is a powerful tool to determine the physical conditions in the narrow-line region (NLR) of active galactic nuclei (AGNs). We recently…
Discovery of Very High Energy Gamma-Ray Emission from the BL Lac Object H2356-309 with the H.E.S.S. Cherenkov Telescopes
Aharonian et al.
The extreme synchrotron BL Lac object H2356-309, located at a redshift of z = 0.165, was observed from June to December 2004 with a total exposure of approx. 40 h live-time with th…
Energy dependent gamma-ray morphology in the Pulsar wind nebula HESSJ1825-137
F. Aharonian
Detailed morphological and spatially resolved spectral studies reveal the very high-energy (VHE) gamma-ray aspects of this object with unprecedented precision. We confirm previous…
Observations of the Crab Nebula with H.E.S.S
The HESS Collaboration, F. Aharonian
The Crab nebula was observed with the H.E.S.S. stereoscopic Cherenkov-telescope array between October 2003 and January 2005 for a total of 22.9 hours (after data quality selection)…
3.9 day orbital modulation in the TeV gamma-ray flux and spectrum from the X-ray binary LS 5039
The H. E. S. S. Collaboration, :, F. A. Aharonian
New observations of LS 5039, a High Mass X-ray Binary comprising a massive star and compact object, were carried out with the High Energy Stereoscopic System of Cherenkov Telescope…
Discovery of the two wings of the Kookaburra complex in VHE gamma -rays with H.E.S.S
The H. E. S. S. Collaboration, :, F. A. Aharonian
Aims. Search for Very High Energy gamma-ray emission in the Kookaburra complex through observations with the H.E.S.S. array. Methods. Stereoscopic imaging of Cherenkov light emissi…
The radio structure of radio-quiet quasars
Christian Leipski, Heino Falcke, Nicola Bennert +2
We investigate the radio emitting structures of radio-quiet active galactic nuclei with an emphasis on radio-quiet quasars to study their connection to Seyfert galaxies. We present…
Size and properties of the narrow-line region in Seyfert-2 galaxies from spatially-resolved optical spectroscopy
Nicola Bennert, Bruno Jungwiert, Stefanie Komossa +2
While [OIII] narrow-band imaging is commonly used to measure the size of the narrow-line regions (NLRs) in active galactic nuclei (AGNs), it can be contaminated by emission from su…
K-Band Observations of Boxy Bulges. I. Morphology and Surface Brightness Profiles
M. Bureau, G. Aronica, E. Athanassoula +3
Kn-band images, unsharp-masked images, as well as major-axis and vertically- summed surface brightness profiles are presented for 30 edge-on spiral galaxies, most with a boxy or pe…
The multi-phase gaseous halos of star forming late-type galaxies - II. Statistical analysis of key parameters
R. Tuellmann, D. Breitschwerdt, J. Rossa +2
In Paper I we showed that multi-phase gaseous halos of late-type spiral galaxies, detected in the radio continuum, in Halpha, and in X-rays, are remarkably well correlated regardin…
The Physical Nature of Lyman Alpha Emitting Galaxies at z=3.1
Eric Gawiser, Pieter G. van Dokkum, Caryl Gronwall +20
We selected 40 candidate Lyman Alpha Emitting galaxies (LAEs) at z ~=3.1 with observed frame equivalent widths >150A and inferred emission line fluxes >2.5x10^-17 ergs/cm^2/s from…