Estimates of the mass distribution and dark-matter (DM) content of dwarf spheroidal galaxies (dSphs) are usually derived under the assumption that the effect of...
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PublicaciónThe effect of tides on the Fornax dwarf spheroidal galaxy
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CharlaThe emergence of Low Surface Brightness Galaxies
Low Surface Brightness galaxies are extremely dark matter dominated, faint objects hardly distinguishable from the night sky. In the last decade it has became...
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CharlaThe ESO VISTA telescope and the VISTA Hemisphere Survey
Survey operations with the VISTA telescope with it wide field near IR camera started in Feb 2010, following a science verification phase that started in Oct...
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PublicaciónThe First Billion Years project: dark matter haloes going from contraction to expansion and back again
We study the effect of baryons on the inner dark matter profile of the first galaxies using the First Billion Years simulation between z = 16 and 6 before...
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PublicaciónThe Galaxy "Missing Dark Matter" NGC 1052-DF4 is Undergoing Tidal Disruption
The existence of long-lived galaxies lacking dark matter represents a challenge to our understanding of how galaxies form. Here, we present evidence that...
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PublicaciónThe Ghost of a Dwarf Galaxy: Fossils of the Hierarchical Formation of the Nearby Spiral Galaxy NGC 5907
We present an extragalactic perspective of an extended stellar tidal stream wrapping around the edge-on spiral galaxy NGC 5907. Our deep images reveal for the...
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PublicaciónThe Halo Mass Function Redshift Dependence
It has recently been shown that the correct halo mass function high-mass behavior may be obtained by an appropriate treatment of the all-mass-at-center problem...
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PublicaciónThe Kinematic Status and Mass Content of the Sculptor Dwarf Spheroidal Galaxy
We present VLT FLAMES spectroscopic observations (R~6500) in the Ca II triplet region for 470 probable kinematic members of the Sculptor (Scl) dwarf spheroidal...
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PublicaciónThe lens SW05 J143454.4+522850: a fossil group at redshift 0.6?
Fossil groups are considered the end product of natural galaxy group evolution in which group members sink towards the centre of the gravitational potential due...