Institute of Astronomy and Astrophysics (IAA)

Université libre de Bruxelles (ULB)

Latest news

  • [20/10/2017] Cosmic Crashes Forging Gold: ULB and Max Planck Institute astrophysicists did predict it back in 2011!

The observation, made public on October 16 2017, that neutron-star mergers emit gravitational waves and visible light with signatures of heavy elements validates a prediction made by scientists of the Max Planck Institute for Astrophysics (MPA) and of the Free University of Brussels (ULB) back in 2011. They had identified that ejected matter from neutron stars merging in a violent collision provides ideal conditions to produce the heaviest chemical elements such as lead or gold.

  • [20/09/2017] Ageing Star Blows Off Smoky Bubble

Astronomers have used the ALMA radio telescope array to capture a strikingly beautiful view of a delicate bubble of expelled material around the exotic red star U Antliae. These observations will help astronomers to better understand how stars evolve during the later stages of their life-cycles.

In the faint southern constellation of Antlia (The Air Pump) the careful observer with binoculars will spot a very red star, which varies slightly in brightness from week to week. This very unusual star is called U Antliae and new observations with the Atacama Large Millimeter/submillimeter Array (ALMA) are revealing a remarkably thin spherical shell around it.

This research was presented in a paper entitled “Rings and filaments. The remarkable detached CO shell of U Antliae”, by F. Kerschbaum et al., to appear in the journal Astronomy & Astrophysics. The team includes C. Paladini (Université Libre de Bruxelles, Belgium).

 ESO press release

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