HFLS3 is the name for a distant galaxy, located at z = 6.34, originating about 880 million years after the Big Bang. Its discovery was announced on 18 April 2013 as an exceptional starburst galaxy producing nearly 3,000 solar masses of stars a year. It was found by using the far infrared capable Herschel Space Telescope. It is 10–30 times the mass of other known galaxies at such an early time in the Universe.
HFLS3 was subjected to a follow-up campaign by other telescopes due to its high redness. HFLS3 was found in the HerMES campaign, which also found other very red sources.
References
HFLS3 Wikipedia(Text) CC BY-SA