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Black hole X-ray binaries are systems where a star and a black hole of a few solar masses orbit each other. Matter accreted from the star by the intense gravitational field of the black hole is heated to several hundred million degrees and radiates in X-rays. Some of this material is also ejected...
The Gaia collaboration, which has many contributors from the Strasbourg astronomical Observatory, will recieve a prestigious award from the American Astronomical Society. The Gaia collaboration, which is responsible for the spacecraft that is currently building the largest and most precise...
Hydrogen is the lightest and most abundant atomic element in the universe. On Earth, it is found combined with other atoms in molecules or as dihydrogen H2. In the Universe, hydrogen can be found as isolated neutral atoms (HI). The evolution of galaxies is mainly governed by the accretion of this...
On Monday 13 June 2022, the Strasbourg Astronomical Data Centre (CDS) publishes the Data Release 3 of the ESA Gaia mission in the CDS services. This major data release coincides with the 50th anniversary year of the operations of the CDS (1972-2022), making it an ideal time to celebrate the...
The cristal collectif award recognises teams of men and women, research support staff, who have carried out projects whose technical mastery, collective dimension, applications, innovation and influence are particularly remarkable. This distinction is awarded in two categories: "direct support...
On Friday 01 April CDS launched into its 50th anniversary year with an event held at the Palais Universitaire : "Open Science and the 50th anniversary of CDS" / "Science Ouverte et le 50ème anniversaire du CDS". We were honoured by the participation of the French Ministry for Higher Education...
The African Network of Women in Astronomy just announced the recipients of its first awards for the year 2021. Marie Korsaga, the first Burkinabe woman to obtain a PhD in astronomy, and now post-doc at ObAS, wins the Early Career Award. Congratulations ! For more informations :...
Using the most powerful telescopes on Earth and in space, a team of astronomers has found for the first-time blasts of hot, warm and cold winds from a neutron star whilst it consumes matter from a nearby star. The discovery provides new insight into the behaviors of some of the most extreme...
An international team of astrophysicists, including researchers from the Observatoire astronomiquede Strasbourg, have detected six “merging galaxies” of our Milky Way – those small “foreign” galaxiesthat sequentially merged into the Milky Way during its long history of 12 billion years...
An international team of researchers including astrophysicists from the Observatoire astronomique de Strasbourg, the Observatoire de la Côte d’Azur, and the Observatoire de Paris discovered the remnants of a star cluster whose stars share a uniquely low fraction of heavy elements. As successive...