6.9k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR336 papers
- ETH ZurichCH215 papers
- Petersburg Nuclear Physics InstituteRU204 papers
- Massachusetts Institute of TechnologyUS182 papers
- European Organization for Nuclear ResearchCH168 papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR167 papers
- University of GenevaCH163 papers
- Hungarian Academy of SciencesHU159 papers
- California Institute of TechnologyUS145 papers
- Paul Scherrer InstituteCH143 papers
- University of BolognaIT143 papers
- University of MichiganUS143 papers
28 papers · 2 filters
Gas Dynamics in the Milky Way: Second Pattern Speed and Large-Scale Morphology
Nicolai Bissantz, Peter Englmaier, Ortwin Gerhard
We present new gas flow models for the Milky Way inside the solar circle. To this end we use SPH simulations in gravitational potentials determined from the NIR luminosity distribu…
Distribution of star-forming complexes in dwarf irregular galaxies
B. R. Parodi, B. Binggeli
We study the distribution of bright star-forming complexes in a homogeneous sample of 72 late-type (``irregular'') dwarf galaxies located within the 10 Mpc volume. Star-forming com…
A catalog of warps in spiral and lenticular galaxies in the Southern hemisphere
M. L. Sanchez-Saavedra, E. Battaner, A. Guijarro +2
A catalog of optical warps of galaxies is presented. This can be considered complementary to that reported by Sanchez-Saavedra et al., with 42 galaxies in the northern hemisphere,…
Isolated Star Formation: A Compact HII Region in the Virgo Cluster
Ortwin Gerhard, Magda Arnaboldi, Kenneth C. Freeman +1
We report on the discovery of an isolated, compact HII region in the Virgo cluster. The object is located in the diffuse outer halo of NGC 4388, or could possibly be in intracluste…
Short-lived p-nuclides in the early solar system and implications on the nucleosynthetic role of X-ray binaries
Nicolas Dauphas, Thomas Rauscher, Bernard Marty +1
The data available for short-lived -nuclides are used in an open nonlinear model of the chemical evolution of the Galaxy in order to discuss the origin of extinct radionuclides,…
Candidates for Intracluster Planetary Nebulae in the Virgo Cluster based on the Suprime-Cam Narrow-Band Imaging in O[III] and Halpha
S. Okamura, N. Yasuda, M. Arnaboldi +17
We have identified 38 candidates of intracluster planetary nebulae (ICPNe) in a field in the core of the Virgo cluster based on the Suprime-Cam imaging through two n…
The Neutrino Signal in Stellar Core Collapse and Postbounce Evolution
M. Liebendoerfer, A. Mezzacappa, O. E. B. Messer +3
General relativistic multi-group and multi-flavor Boltzmann neutrino transport in spherical symmetry adds a new level of detail to the numerical bridge between microscopic nuclear…
Quark Matter in Neutron Star Mergers
R. Oechslin, G. Poghosyan, K. Uryu
Binary neutron star mergers are expected to be one of the most promising source of gravitational waves (GW) for the network of laser interferometric and bar detectors becoming oper…
The s-process branching at 185W
K. Sonnabend, P. Mohr, K. Vogt +6
The neutron capture cross section of the unstable nucleus 185W has been derived from experimental photoactivation data of the inverse reaction 186W(gamma,n)185W. The new result of…
Measurement of fast bars in a sample of early-type barred galaxies
J. A. L. Aguerri, V. P. Debattista, E. M. Corsini
We present surface photometry and stellar kinematics of a sample of 5 SB0 galaxies: ESO 139-G009, IC 874, NGC 1308, NGC 1440 and NGC 3412. We measured their bar pattern speed using…
A metallicity-flattening relation for dwarf elliptical galaxies
Fabio D. Barazza, Bruno Binggeli
It is shown that bright cluster dwarf ellipticals follow a relation between metallicity and apparent flattening. Rounder dwarfs tend to be more metal-rich. The evidence is based on…
Old stellar Galactic disc in near-plane regions according to 2MASS: scales, cut-off, flare and warp
M. Lopez-Corredoira, A. Cabrera-Lavers, F. Garzon +1
We have pursued two different methods to analyze the old stellar population near the Galactic plane, using data from the 2MASS survey. The first method is based on the isolation of…
GAIA and the Extragalactic Distance Scale
G. A. Tammann, B. Reindl
The local (v<1200kms) and the cosmic expansion field out to 30000kms-1 are characterized by Ho=58. While the random error is small (+-2), it may still be affected by systematic err…
A Finite Difference Representation of Neutrino Radiation Hydrodynamics in Spherically Symmetric General Relativistic Space-Time
M. Liebendoerfer, O. E. B. Messer, A. Mezzacappa +3
We present an implicit finite difference representation for general relativistic radiation hydrodynamics in spherical symmetry. Our code, Agile-Boltztran, solves the Boltzmann tran…
More evidence for hidden spiral and bar features in bright early-type dwarf galaxies
Fabio D. Barazza, Bruno Binggeli, Helmut Jerjen
Following the discovery of spiral structure in IC3328 (Jerjen et al.~2000), we present further evidence that a sizable fraction of bright early-type dwarfs in the Virgo cluster are…
Warps and correlations with intrinsic parameters of galaxies in the visible and radio
N. Castro-Rodriguez, M. Lopez-Corredoira, M. L. Sanchez-Saavedra +1
From a comparison of the different parameters of warped galaxies in the radio, and especially in the visible, we find that: a) No large galaxy (large mass or radius) has been found…
Two emission line objects with z>0.2 in the optical filament apparently connecting the Seyfert galaxy NGC 7603 to its companion
M. Lopez-Corredoira, Carlos M. Gutierrez
We present new spectroscopic observations of an old case of anomalous redshift--NGC 7603 and its companion. The redshifts of the two galaxies which are apparently connected by a lu…
A Pattern Speed in the Galaxy's OH/IR Stars
Victor P. Debattista, Ortwin Gerhard, M. N. Sevenster
We use the Tremaine-Weinberg method, adapted to the Milky Way, to measure a pattern speed in OH/IR stars located in the inner MW.
The Pattern Speed of the OH/IR Stars in the Milky Way
Victor P. Debattista, Ortwin Gerhard, Maartje N. Sevenster
We show how the continuity equation can be used to determine pattern speeds in the Milky Way Galaxy (MWG). This method, first discussed by Tremaine & Weinberg in the context of ext…
The importance of neutrino opacities for the accretion luminosity in spherically symmetric supernova models
M. Liebendoerfer, O. E. B. Messer, A. Mezzacappa +3
Based on general relativistic three-flavor Boltzmann neutrino transport, we compare simulations of the postbounce evolution for five different stellar progenitors with 13 and 20 so…
Colour Evolution of Disk Galaxy Models from z=4 to z=0
Pieter Westera, Markus Samland, Roland Buser +1
We calculate synthetic UBVRIJHKLM images, integrated spectra and colours for the disk galaxy formation models of Samland & Gerhard (2002), from redshift z=4 to z=0. Two models are…
Mass distribution in our Galaxy
Ortwin Gerhard
This article summarizes recent work on the luminosity and mass distribution of the Galactic bulge and disk, and on the mass of the Milky Way's dark halo. A new luminosity model con…
The Galactic Bar
Ortwin Gerhard
The Milky Way has a barred bulge. This article summarizes the current understanding of the main structural parameters and pattern speed of the bar, and compares predicted values fo…
Dynamical Masses of Elliptical Galaxies
Ortwin Gerhard
Recent progress in the dynamical analysis of elliptical galaxy kinematics is reviewed. Results reported briefly include (i) the surprisingly uniform anisotropy structure of luminou…