Monday, November 10, 2014

HL Tauri





Protoplanetary disk

HL Tauri (abbreviated HL Tau) is a very young T Tauri star[5] in the constellation Taurus, approximately 450 light-years (140 pc) from Earth[1] in the Taurus Molecular Cloud.[6] The luminosity and effective temperature of HL Tauri imply that its age is less than 100,000 years.