AA Tauri

( 0.8 ± 0.1 ) L ☉

AA Tauri is a fixed star in the constellation Taurus. Its peculiarity is that in its environment - according to the discovery of J. Carr (according to the journal Science, vol 319, p 1504) - using the Spitzer infrared telescope Hydrogen cyanide (hydrocyanic acid), acetylene and carbon dioxide and water vapor are detected could. The star thus has a protoplanetary disk from organic material in the well-known in organic chemistry, for Cosmochemistry highly interesting processes of chemical evolution take place (see below chemical evolution ). AA Tauri is located in the Taurus - Auriga complex and is part of T- association Taurus T3 and connected it with the dark cloud Barnard 18, where the star lies outside the dense inner part of the cloud.


  • Individual star fifth size and darker
  • Taurus ( constellation )
  • Variable star