Remnants of red novae

  • Date: –15:00
  • Location: Online: Zoom
  • Lecturer: Tomasz Kamiński, Laboratory for Astrophysics in Toruń, Poland
  • Organiser: Division of Astronomy and Space Physics, Department of Physics and Astronomy
  • Contact person: Sofia Ramstedt
  • Seminarium

Galactic transients widely known as 'red novae' are thought to be stellar-merger eruptions. Before the two non-compact stars coalesce, the system goes through the common envelope phase and loses mass. Red nova outburst are also associated with mass ejections resulting in complex circumstellar remnants. I am going to present and discuss new interferometric observations of a few Galactic red-nova remnants. They shed light on physical processes taking place before and after the merger including mass and angular-momentum loss, dust formation, and complex chemistry.