RCW 34

RCW 34, also known as Gum 19, is an HII region and emission nebula located in the constellation of Vela. It is located approximately 10,000 light years from Earth. Named after Australian astronomer Colin Stanley Gum. The source of energy that stimulates the nebula RCW 34 to shine is a huge, extremely hot star V391 Velorum with a surface temperature of up to 30,000 °C. Because is a variable star it evokes violent phenomena, including discard of matter shells, affecting the composition and light emission of the RCW 34 nebula.