Background Image

Supergiant star gains thick dusty waist


Supergiant star gains thick dusty waist

  • Categoría Astronomía
  • New 3D imaging technique reveals velocity field of baby-like feature in old star close to death.

    How is it possible that HD 62623, a hot supergiant star at the verge of death, is surrounded by a disc, generally only associated to baby stars? Using long-baseline stellar interferometry at ESO's VLT interferometer, a team led by Florentin Millour from Observatoire de la Côte d'Azur and Anthony Meilland from Max Planck Institute for Radio Astronomy could generate for the first time a three-dimensional high angular and high spectral resolution image of this star and its closest environment. They conclude that a solar-mass companion star is the key for this mystery. To attain their goal, the researchers adapted an imaging technique from radioastronomy that uses interferometric datasets.