446 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Ludwig-Maximilians-Universität MünchenDE61 papers
- Max Planck Institute for Extraterrestrial PhysicsDE26 papers
- Centre National de la Recherche ScientifiqueFR19 papers
- Trieste Astronomical ObservatoryIT16 papers
- University of Hawaii SystemUS14 papers
- Max Planck Institute for AstrophysicsDE13 papers
- Université Bourgogne Franche-ComtéFR11 papers
- Max Planck Institute for AstronomyDE10 papers
- University of CambridgeGB10 papers
- Space Telescope Science InstituteUS9 papers
- University of MichiganUS9 papers
- Excellence Cluster UniverseDE8 papers
14 papers · 1 filter
A cosmic abundance standard: chemical homogeneity of the solar neighbourhood and the ISM dust-phase composition
Norbert Przybilla, Maria-Fernanda Nieva, Keith Butler
A representative sample of unevolved early B-type stars in nearby OB associations and the field is analysed to unprecedented precision using NLTE techniques. The resulting chemical…
Termination of star formation by BH feedback in equal- and unequal-mass mergers of disk and elliptical galaxies
Peter H. Johansson, Thorsten Naab, Andreas Burkert
We present binary galaxy merger simulations of gas-rich disks (Sp-Sp), of early-type galaxies and disks (E-Sp, mixed mergers), and mergers of early-type galaxies (E-E, dry mergers)…
From primordial He abundance to the Higgs field
Josef M. Gaßner, Harald Lesch, Hartmuth Arenhövel
We constrain the possible time variation of the Higgs vacuum expectation value () by recent results on the primordial He abundance (). For that, we improve the analytic…
The M31 microlensing event WeCAPP-GL1/Point-AGAPE-S3: evidence for a MACHO component in the dark halo of M31?
A. Riffeser, S. Seitz, R. Bender
We re-analyze the M31 microlensing event WeCAPP-GL1/Point-AGAPE-S3 taking into account that stars are not point-like but extended. We show that the finite size of stars can dramati…
Equal- and unequal-mass mergers of disk and elliptical galaxies with black holes
Peter H. Johansson, Thorsten Naab, Andreas Burkert
We present binary galaxy merger simulations with varying mass ratios and different progenitor morphologies. The simulations include mergers of gas-rich disks (Sp-Sp), of early-type…
SAURON's Challenge for the Major Merger Scenario of Elliptical Galaxy Formation
Andreas Burkert, Thorsten Naab, Peter H. Johansson
The intrinsic anisotropy delta and flattening epsilon of simulated merger remnants is compared with elliptical galaxies that have been observed by the SAURON collaboration, and tha…
Formation and evolution of galactic spheroids by mergers
Thorsten Naab, Andreas Burkert, Peter H. Johansson +1
Galactic spheroids can form as a result of galaxy interactions and mergers of disks. Detailed analyses of the photometric properties, the intrinsic orbital structure, the line-of-s…
On gas drag in a circular binary system
P. Ciecielag, S. Ida, A. Gawryszczak +1
We investigate both analytically and numerically the motion of massless particles orbiting primary star in a close circular binary system with particular focus on the gas drag effe…
Cloud Dispersal in Turbulent Flows
F. Heitsch, A. D. Slyz, J. E. G. Devriendt +1
Cold clouds embedded in warm media are very common objects in astrophysics. Their disruption timescale depends strongly on the dynamical configuration. We discuss the evolution of…
A comparative study of disc-planet interaction
M. de Val-Borro, R. G. Edgar, P. Artymowicz +20
We perform numerical simulations of a disc-planet system using various grid-based and smoothed particle hydrodynamics (SPH) codes. The tests are run for a simple setup where Jupite…
The Birth of Molecular Clouds: Formation of Atomic Precursors in Colliding Flows
F. Heitsch, A. D. Slyz, J. E. G. Devriendt +2
Molecular Cloud Complexes (MCCs) are highly structured and ``turbulent''. Observational evidence suggests that MCCs are dynamically dominated systems, rather than quasi-equilibrium…
The Turbulent Interstellar Medium
Andreas Burkert
An overview is presented of the main properties of the interstellar medium. Evidence is summarized that the interstellar medium is highly turbulent, driven on different length scal…
Supernova 2006aj and the associated X-Ray Flash 060218
J. Sollerman, A. O. Jaunsen, J. P. U. Fynbo +23
We have studied the afterglow of the gamma-ray burst (GRB) of February 18, 2006. This is a nearby long GRB, with a very low peak energy, and is therefore classified as an X-ray Fla…
How galaxies lose their angular momentum
E. D'Onghia, A. Burkert, G. Murante +1
The processes are investigated by which gas loses its angular momentum during the protogalactic collapse phase, leading to disk galaxies that are too compact with respect to the ob…