Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Max Planck SocietyDE1.2k papers
- Centre National de la Recherche ScientifiqueFR1k papers
- National Institute for AstrophysicsIT820 papers
- European Southern ObservatoryCL784 papers
- Center for Astrophysics Harvard & SmithsonianUS755 papers
- Max Planck Institute for Extraterrestrial PhysicsDE722 papers
- Ludwig-Maximilians-Universität MünchenDE639 papers
- Space Research InstituteRU602 papers
- Osservatorio Astronomico di PadovaIT600 papers
- California Institute of TechnologyUS581 papers
- Trieste Astronomical ObservatoryIT566 papers
- University of California, BerkeleyUS566 papers
250 papers · 1 filter
HD 91669b: A New Brown Dwarf Candidate from the McDonald Observatory Planet Search
Robert A. Wittenmyer, Michael Endl, William D. Cochran +4
We report the detection of a candidate brown dwarf orbiting the metal-rich K dwarf HD 91669, based on radial-velocity data from the McDonald Observatory Planet Search. HD 91669b is…
Power Asymmetry in Cosmic Microwave Background Fluctuations from Full Sky to Sub-degree Scales: Is the Universe Isotropic?
F. K. Hansen, A. J. Banday, K. M. Gorski +2
We repeat and extend the analysis of Eriksen et al 2004 and Hansen et al 2004 testing the isotropy of the Cosmic Microwave Background (CMB) fluctuations. We find that the hemispher…
The IR Luminosity Functions of Rich Clusters
Lei Bai, George H. Rieke, Marcia J. Rieke +2
We present MIPS observations of the cluster A3266. About 100 spectroscopic cluster members have been detected at 24 micron. The IR luminosity function in A3266 is very similar to t…
Phase-space structure in the local dark matter distribution and its signature in direct detection experiments
Mark Vogelsberger, Amina Helmi, Volker Springel +6
We study predictions for dark matter phase-space structure near the Sun based on high-resolution simulations of six galaxy halos taken from the Aquarius Project. The local DM densi…
Mass Ejection by Strange Star Mergers and Observational Implications
A. Bauswein, H. -Th. Janka, R. Oechslin +5
We determine the Galactic production rate of strangelets as a canonical input to calculations of the measurable cosmic ray flux of strangelets by performing simulations of strange…
Hydrodynamical N-body simulations of coupled dark energy cosmologies
Marco Baldi, Valeria Pettorino, Georg Robbers +1
If the accelerated expansion of the Universe at the present epoch is driven by a dark energy scalar field, there may well be a non-trivial coupling between the dark energy and the…
The nature of red dwarf galaxies
Yu Wang, Xiaohu Yang, H. J. Mo +5
Using dark matter halos traced by galaxy groups selected from the Sloan Digital Sky Survey Data Release 4, we find that about 1/4 of the faint galaxies ($\rmag >-17.05$, hereafter…
Cross-Correlation between Damped Ly-alpha Systems and Ly-break Galaxies in Cosmological SPH Simulations
Tae Song Lee, Kentaro Nagamine, Lars Hernquist +1
We calculate the cross-correlation function (CCF) between damped Ly-a systems (DLAs) and Lyman break galaxies (LBGs) using cosmological hydrodynamic simulations at z=3. We compute…
An implementation of radiative transfer in the cosmological simulation code GADGET
M. Petkova, V. Springel
We present a novel numerical implementation of radiative transfer in the cosmological smoothed particle hydrodynamics (SPH) simulation code {\small GADGET}. It is based on a fast,…
Feast and Famine: Regulation of Black Hole Growth in Low Redshift Galaxies
Guinevere Kauffmann, Timothy M. Heckman
We analyze the observed distribution of Eddington ratios as a function of supermassive black hole mass for a large sample of nearby galaxies drawn from the Sloan Digital Sky Survey…
The Formation and Survival of Discs in a Lambda-CDM Universe
Cecilia Scannapieco, Simon D. M. White, Volker Springel +1
We study the formation of galaxies in a Lambda-CDM Universe using high resolution hydrodynamical simulations with a multiphase treatment of gas, cooling and feedback, focusing on t…
The Seventh Data Release of the Sloan Digital Sky Survey
K. Abazajian
This paper describes the Seventh Data Release of the Sloan Digital Sky Survey (SDSS), marking the completion of the original goals of the SDSS and the end of the phase known as SDS…
Phase-space structures II: Hierarchical Structure Finder
M. Maciejewski, S. Colombi, V. Springel +2
A new multi-dimensional Hierarchical Structure Finder (HSF) to study the phase-space structure of dark matter in N-body cosmological simulations is presented. The algorithm depends…
Modeling the cosmological co-evolution of supermassive black holes and galaxies: II. The clustering of quasars and their dark environment
Silvia Bonoli, Federico Marulli, Volker Springel +3
We use semi-analytic modeling on top of the Millennium simulation to study the joint formation of galaxies and their embedded supermassive black holes. Our goal is to test scenario…
The Barium Isotopic Abundance in the Metal-Poor Star HD140283
R. Collet, M. Asplund, P. E. Nissen
We derive the mixture of odd to even barium isotopes in the atmosphere of the metal-poor subgiant HD140283 from the analysis of the Ba II transition at 455.4 nm in a high-resolutio…
The Evolution of Bar Pattern Speed with Time and Bulge Prominence
Dimitri A. Gadotti
Results from the modelling of bars in nearly 300 galaxies are used to test predictions from theoretical work on the evolution of bars. Correlations are found between bar ellipticit…
A strong optical flare before the rising afterglow of GRB 080129
J. Greiner, T. Krühler, S. McBreen +11
We report on GROND observations of a 40 sec duration (rest-frame) optical flare from GRB 080129 at redshift 4.349. The rise- and decay time follow a power law with indices +12 and…
The core helium flash revisited: II. Two and three-dimensional hydrodynamic simulations
M. Mocak, E. Mueller, A. Weiss +1
We study turbulent convection during the core helium flash close to its peak by comparing the results of two and three-dimensional hydrodynamic simulations. We use a multidimension…
CMBPol Mission Concept Study: Foreground Science Knowledge and Prospects
A. A. Fraisse, J. -A. C. Brown, G. Dobler +10
We report on our knowledge of Galactic foregrounds, as well as on how a CMB satellite mission aiming at detecting a primordial B-mode signal (CMBPol) will contribute to improving i…
X-ray follow-up observations of unidentified VHE gamma-ray sources
Gerd Pühlhofer
A large fraction of the recently discovered Galactic Very High Energy (VHE) source population remains unidentified to date. VHE gamma-ray emission traces high energy particles in t…
Type Ia Supernova: Calculations of Turbulent Flames Using the Linear Eddy Model
S. E. Woosley, A. R. Kerstein, V. Sankaran +1
The nature of carbon burning flames in Type Ia supernovae is explored as they interact with Kolmogorov turbulence. One-dimensional calculations using the Linear Eddy Model of Kerst…
Structural Properties of Pseudo-Bulges, Classical Bulges and Elliptical Galaxies: an SDSS Perspective
Dimitri A. Gadotti
We have performed 2D bulge/bar/disc decompositions using g, r and i-band images of a representative sample of nearly 1000 galaxies from the Sloan Digital Sky Survey. We show that t…
Testing gravity on large scales. The skewness of the galaxy distribution at z~1
C. Marinoni, L. Guzzo, A. Cappi +54
We study the evolution of the low-order moments of the galaxy overdensity distribution over the redshift interval 0.7<z<1.5. We find that the variance and the normalized skewness e…
Primordial non-Gaussianities in the Intergalactic Medium
M. Viel, E. Branchini, K. Dolag +3
We present results from the first high-resolution hydrodynamical simulations of non-Gaussian cosmological models. We focus on the statistical properties of the transmitted Lyman-al…