okt 012012
 
Yellow Supergiant Became a Supernova

  A group of researchers led by Melina Bersten (Kavli IPMU) has presented evidence that the yellow supergiant (YSG) star found at the location of supernova SN 2011dh in the famous nearby galaxy M51 (the Whirlpool Galaxy) was indeed the SN progenitor, as well as produced a self-consistent model to explain how a star of [continue reading]

apr 172012
 
The Lives of Stars, or Astronomers as Paparazzi

Stars live for a long time, with even the most massive stars having lifetimes measured in millions of years. But, for a mere few thousand years towards the end of their lives, some massive stars go through what astronomers call the yellow supergiant phase. This is remarkably short in astronomical terms, and, as a result, [continue reading]