Institute of Astronomy and Astrophysics (IAA)

Université libre de Bruxelles (ULB)

Latest news

  • [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



For ULB students