The mystery of the galaxy with no dark matter: solved!
A group of researchers from the Instituto de Astrofísica de Canarias (IAC) has clarified one of the mysteries of 2018 in the field of extragalactic astrophysics...
The number of globular clusters around the iconic UDG DF44 is as expected for dwarf galaxies
There is a growing consensus that the vast majority of ultradiffuse galaxies (UDGs) are dwarf galaxies. However, there remain a few UDGs that seem to be special...
The Number of Tidal Dwarf Satellite Galaxies in Dependence of Bulge Index
We show that a significant correlation (up to 5σ) emerges between the bulge index, defined to be larger for a larger bulge/disk ratio, in spiral galaxies with...
The orientation of galaxy dark matter haloes around cosmic voids
Using the Millennium N-body Simulation we explore how the shape and angular momentum of galaxy dark matter haloes surrounding the largest cosmological voids are...
The principle of maximum entropy explains the cores observed in the mass distribution of dwarf galaxies
Cold dark matter (CDM) simulations predict a central cusp in the mass distribution of galaxies. This prediction is in stark contrast with observations of dwarf...
The Pristine survey - XVIII. C-19: tidal debris of a dark matter-dominated globular cluster?
The recently discovered C-19 stellar stream is a collection of kinematically associated metal-poor stars in the halo of the Milky Way lacking an obvious...
International research led by the Instituto de Astrofísica de Canarias (IAC) and the University of La Laguna (ULL) has found the first evidence of a massive...
The puzzle of the strange galaxy made of 99.99% dark matter is solved
At present, the formation of galaxies is difficult to understand without the presence of a ubiquitous, but mysterious component, termed dark matter. Astronomers...
The quantity of dark matter in early-type galaxies and its relation to the environment
We study the behaviour of the dynamical and stellar mass inside the effective radius of early-type galaxies (ETGs) as a function of environment considering...