Gaia detects the most massive black hole of stellar origin in the Milky Way

On April 16, 2014, we have published the discovery of a massive black hole during validation thanks to DR4 data from the Gaia mission. It is an object of 33 solar masses located less than 2,000 light years from Earth, in the constellation of Aquila, the Eagle. These types of black holes have been previously found through gravitational wave observations. Now, for the first time, such a massive black hole of stellar origin is detected within the Milky Way. Gaia-BH3 (as the new object has been called) has a giant star orbiting around it with a period of 11.6 years. The astrometric data that...

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KRATOS: 2TB from Óscar Jimenez Arranz

The Universitat de Barcelona (UB) has published at the Repositori de Dades de Recerca (RDR, research data repository) a 2-Terabytes (TB) dataset “KRATOS: A large suite of N-body simulations to interpret the stellar kinematics of LMC-like discs” generated by the researcher Óscar Jiménez Arranz and linked to his doctoral thesis dedicated to the study of the galactic and kinematic structure of the Magellanic Clouds. The dataset consists of 28 simulations with 183 files each, along with different scripts to run them and a README file documenting the content. A large part of KRATOS is...

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Veus de Gaia, la «màquina dels descobriments»

Mercè Romero i Josep Manel Carrasco són dos de la vintena d’investigadors del grup Gaia UB, o sigui, dues de les veus de la missió ESA Gaia. En aquesta entrevista a la web de la Facultat de Física de la UB parlen de Gaia. ESA Gaia va fer públic al mes de juny el tercer release, el Gaia Data Release (Gaia DR3), és a dir, les dades recopilades pel telescopi en els primers tres anys de la missió. Va tenir molta repercussió mediàtica. «Estem molt contents d’estar en totes les etapes del procés i de l’impacte en la comunitat científica de les dades que es publiquen» i «molt contents de veure que...

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Gaia: El Google Maps de la Vía Láctea publica los espectros de 200 millones de estrellas (in Spanish)

Artícle published in The Conversation by M. Romero-Gómez and J.M. Carrasco Martínez.

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Cloud computing to unveil the mysteries of our galaxy

The Galactic RainCloudS project, an initiative led by members of the Faculty of Physics, the Institute of Cosmos Sciences (ICCUB) of the UB and the Institute for Space Studies of Catalonia (IEEC), was awarded the first position in the framework of the Cloud Funding for Research call of the European project Open Clouds For Research Environments (OCRE). The project competed against 27 proposals from twelve countries in a wide range of research disciplines. This first edition of Cloud Funding For Research funds the use of commercial computational cloud resources for research. The project counts...

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Constellations in 3D

Eduard Masana, lecturer at the Physics Faculty and researcher of the Gaia group of the Institute of Cosmos Sciences of the University of Barcelona (ICCUB), explains how the perspective changes the way we see the stars in the sky, and how not all the stars are at the same distances, but they could be very far from each other. Using Orion as an example, this video guides us to build the constellation in 3-D. This activity was organised by the “VI Festa de la Ciència de la Universitat de Barcelona” in virtual version with the aim to keep the connection between research and society,...

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