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- Centre National de la Recherche ScientifiqueFR679 papers
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43 papers · 2 filters
How gravitational softening affects galaxy stability I. Linear mode analysis of disc galaxies
Sven De Rijcke, Jean-Baptiste Fouvry, Walter Dehnen
Linear perturbation is used to investigate the effect of gravitational softening on the retrieved two-armed spiral eigenmodes of razor-thin stellar discs. We explore four softening…
Space Telescope and Optical Reverberation Mapping Project. X. Understanding the Absorption-Line Holiday in NGC 5548
M. Dehghanian, G. J. Ferland, G. A. Kriss +27
The flux variations in the emission lines in active galactic nuclei (AGNs) are driven by variations in the ionizing continuum flux --which are usually reflected in the observable U…
The Environments of Luminous Radio - WISE Selected Infrared Galaxies
J. I. Penney, A. W. Blain, D. Wylezalek +17
We have observed the environments of a population of 33 heavily dust obscured, ultra-luminous, high-redshift galaxies, selected using WISE and NVSS at 1.3 with the Infra-Red Ar…
The Multiple Merger Assembly of a Hyper-luminous Obscured Quasar at redshift 4.6
T. Diaz-Santos, R. J. Assef, A. W. Blain +10
Galaxy mergers and gas accretion from the cosmic web drove the growth of galaxies and their central black holes at early epochs. We report spectroscopic imaging of a multiple merge…
The hidden giant: discovery of an enormous Galactic dwarf satellite in Gaia DR2
G. Torrealba, V. Belokurov, S. E. Koposov +8
We report the discovery of a Milky Way satellite in the constellation of Antlia. The Antlia 2 dwarf galaxy is located behind the Galactic disc at a latitude of a…
Reliable mass calculation in spherical gravitating systems
Foivos I. Diakogiannis, Geraint F. Lewis, Rodrigo A. Ibata +3
We present an innovative approach to the methodology of dynamical modelling, allowing practical reconstruction of the underlying dark matter mass without assuming both the density…