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Scientists made the discovery first by pinpointing their target through infrared images from the Canada-France-Hawaii Telescope, and later using the Very Large Telescope to deduce that the object was both too small to be a star as well as hot and young enough (752F and under 120 million years old) to fit the behavior of a planet orphaned early into its existence.
ENGADGET: University of Montreal detects an orbitless planet, shows that stars don't have an iron grip (video)
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The new picture, which was released today (March 28), combines infrared images of the Milky Way taken during sky surveys by two different instruments, the UK Infrared Telescope in Hawaii and the VISTA telescope in Chile.
MSN: New Milky Way photo captures 1 billion stars
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They are the first planets discovered by the enormous Keck telescope in Hawaii, the sharpest optical telescope in the world.
CNN: Astronomers spy new neighbors outside solar system
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The Pan-Starrs telescope in Hawaii uses several gigapixel cameras, but it has a relatively narrow field of view.
WSJ: Next Cameras Come Into View
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Thanks to observations made with the Gemini ground-based optical telescope in Hawaii, it quickly became clear that GRB130427A was superbright primarily because it lay only a few billion light years away.
CNN: Why gamma-ray burst shocked scientists
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The work, which is described in the journal Nature, actually draws on observations made by several astronomical facilities, including the Keck and James Clerk Maxwell telescopes in Hawaii and the Hubble Space Telescope in orbit around the Earth.
BBC: NEWS | Science/Nature | Deepest X-rays tell merger story
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The infra-red radiation emitted by the dust can also be used to measure the size of the ring directly, and this has been done using the Keck telescope on Mauna Kea, Hawaii.
ECONOMIST: Planetary formation
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Astronomers using the United Kingdom Infrared Telescope (UKIRT) in Hawaii discovered the four star pairs, each of which is a binary system in which two stars circle each other in less than four hours.
MSN: 'Impossible' stars found in our galaxy - Technology & science - Space - Space.com | NBC News
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Using Keck I, a telescope on a mountain-top in Hawaii, the physicists analysed light emanating from very bright but distant galaxies called quasars.
ECONOMIST: Fundamental physics
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The Keck interferometer, now under construction at Mauna Kea on Hawaii, will combine four 1.8-metre telescopes to mimic a 100-metre telescope in just this way.
ECONOMIST: A roadmap for planet-hunting