The bulk of stars in galaxy clusters are confined within their constituent galaxies. Those stars do not trace the extended distribution of dark matter well as they are located in the central regions of the cluster's dark matter subhaloes. A small fraction of stars is expected, however, to follow the global dark matter shape of the cluster. These are the stars whose extended spatial distribution results from the merging activity of galaxies and form the intracluster light (ICL). In this work, we compare the bi-dimensional distribution of dark matter in massive galaxy clusters (as traced by
This section includes scientific and technological news from the IAC and its Observatories, as well as press releases on scientific and technological results, astronomical events, educational projects, outreach activities and institutional events.
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The QUIJOTE experiment at the Teide Observatory (Tenerife) has studied the polarization of this type of emissions in one of the nearest and youngest star formation regions of the Milky Way, yielding important information for effectuating an adequate separation of this radiation from other galactic components.
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An international study, using the high-speed HiPERCAM camera, installed in the Gran Telescopio Canarias (GTC), has determined for the first time the mass and radius of one of the oldest stars in our Galaxy.
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The Instituto de Astrofísica de Canarias (IAC) and the University of La Laguna (ULL) are organizing the scientific conference “Impulsing Astrophysics in Spain: 50 years of doctoral theses at the IAC”, which will be held on 17th to 19th July in La Laguna (Tenerife).
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Researchers from the Instituto de Astrofísica de Canarias (IAC) and the University of La Laguna (ULL) have discovered the remains of a planet inside a disc of debris circling a white dwarf. Thought to be rich in heavy metals iron and nickel which helped it survive destruction of its planetary system. This work, has been published today in Science magazine.
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Researchers at the Instituto de Astrofísica de Canarias (IAC) and the University of Cambridge have detected lithium in a primitive star in our galaxy. The observations were made at the VLT, at the Paranal Observatory of ESO in Chile.
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