Press Release

2019

Subaru Telescope Detects the Mid-infrared Emission Band from Complex Organic Molecules in Comet 21P/Giacobini-Zinner
Subaru Telescope Detects the Mid-infrared Emission Band from Complex Organic Molecules in Comet 21P/Giacobini-Zinner November 18, 2019

Using the Subaru Telescope, astronomers have detected an unidentified infrared emission band from comet 21P/Giacobini-Zinner in addition to the thermal emissions from silicate and carbon grains. These unidentified infrared emissions are likely due to complex organic molecules, both aliphatic and aromatic hydrocarbons, contaminated by N- or O-atoms.

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The Whole Picture of Distant Supercluster in Three Dimensions
The Whole Picture of Distant Supercluster in Three Dimensions October 22, 2019

A team of astronomers used the Subaru Telescope and Gemini-North Telescope to reveal that a well-known distant supercluster is part of a larger structure at least twice as extended as what was already known. The galaxies associated with the supercluster are thought to have formed simultaneously over a vast area and then evolved to their observed states.

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Saturn Surpasses Jupiter After Discovery of 20 New Moons
Saturn Surpasses Jupiter After Discovery of 20 New Moons October 7, 2019

Using the Subaru Telescope, a team led by Carnegie's Scott S. Sheppard has found 20 new moons orbiting Saturn. This brings the ringed planet's total number of moons to 82, surpassing Jupiter, which has 79. The discovery was announced on October 7, 2019, by the International Astronomical Union's Minor Planet Center.

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Massive Filaments Fuel the Growth of Galaxies and Supermassive Black Holes
Massive Filaments Fuel the Growth of Galaxies and Supermassive Black Holes October 3, 2019

An international group of scientists led by the RIKEN Cluster for Pioneering Research has used observations from the Multi Unit Spectroscopic Explorer (MUSE) at the ESO Very Large Telescope (VLT) in Chile and Suprime-Cam at the Subaru Telescope to make detailed observations of the filaments of gas connecting galaxies in a large proto-cluster in the early Universe.

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Oldest Galaxy Protocluster forms "Queen's Court"
Oldest Galaxy Protocluster forms Queen's Court September 26, 2019

Using the Subaru, Keck, and Gemini Telescopes, an international team of astronomers has discovered a collection of 12 galaxies in the constellation Cetus which existed about 13.0 billion years ago. This is the earliest protocluster ever found. This discovery suggests that large structures such as protoclusters already existed when the Universe was only about 800 million years old, 6 percent of its present age.

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Storms on Jupiter Seen by Multi-Wavelength Observations
Storms on Jupiter Seen by Multi-Wavelength Observations August 23, 2019

Astronomers using the Subaru Telescope contributed to coordinated observations of the planet in January 2017, joining observers using ground-based and space telescopes in tracking the effects of these storms - visible as bright plumes above the planet's main ammonia ice cloud deck over which they appear.

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Einstein's General Relativity Theory Is Questioned But Still Stands 'For Now,' Team Reports
Einstein's General Relativity Theory Is Questioned But Still Stands 'For Now,' Team Reports July 25, 2019

Observations using the Infrared Camera and Spectrograph (IRCS) mounted on the Subaru Telescope contributed to a test of Albert Einstein's theory of general relativity around a supermassive black hole by measuring the motion of the Galactic center star S0-2 precisely.

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Subaru Telescope Identifies the Outermost Edge of our Milky Way System
Subaru Telescope Identifies the Outermost Edge of our Milky Way System June 21, 2019

A team of researchers identified the outermost edge of the Milky Way Galaxy. Using the Subaru Telescope, the researchers examined the boundary of the stellar system that makes up our Galaxy. The ultimate size of our Galaxy is 520,000 light years in radius, 20 times larger than the distance between the Galactic Center and our solar system.

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Subaru Telescope Captures 1800 Exploding Stars
Subaru Telescope Captures 1800 Exploding Stars May 29, 2019

Astronomers using the Subaru Telescope identified about 1800 new supernovae in the distant Universe, including 58 Type Ia supernovae over 8 billion light-years away. These findings will help elucidate the expansion of the Universe.

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Star Formation in Young Galaxies Not Affected by Environment
Star Formation in Young Galaxies Not Affected by Environment May 20, 2019

A team of astronomers used the Subaru Telescope to observe a proto-cluster of galaxies in the early Universe and found that the galaxies in it are forming stars in the same manner as isolated galaxies in the same era. This suggests that the galactic environment does not have a large influence on star formation in young galaxies.

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Subaru Telescope Sheds New Light on an Obscured Infant Solar System
Subaru Telescope Sheds New Light on an Obscured Infant Solar System May 13, 2019

A new cutting-edge planet-imaging system on the Subaru Telescope on Maunakea has now provided a first-ever direct, sharp look at a distant planetary system long thought to resemble the early solar system.

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Star with Strange Chemistry is from Out of Town
Star with Strange Chemistry is from Out of Town April 29, 2019

Using the High Dispersion Spectrograph on the Subaru Telescope, astronomers have discovered a star in the Milky Way Galaxy with a chemical composition unlike any other star in our Galaxy. This chemical composition has been seen in a small number of stars in dwarf galaxies orbiting the Milky Way. This suggests that the star was part of a dwarf galaxy that merged into the Milky Way.

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Jupiter's Atmosphere Heats Up Under Solar Wind
Jupiter's Atmosphere Heats Up Under Solar Wind April 9, 2019

Subaru Telescope's observations show auroras at Jupiter's poles are heating the planet's atmosphere more deeply than previously thought – and its near-immediate response to solar winds. Within a day of solar winds hitting Jupiter, the chemistry in its atmosphere changed and its temperature rose, scientists found.

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Subaru Telescope Helps Determine that Dark Matter is not Made Up of Tiny Primordial Black Holes
Subaru Telescope Helps Determine that Dark Matter is not Made Up of Tiny Primordial Black Holes April 1, 2019

An international team of researchers has put a theory speculated by the late Stephen Hawking to its most rigorous test to date, and their results based on the observations using the Subaru Telescope have ruled out the possibility that primordial black holes smaller than a tenth of a millimeter make up most of dark matter.

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Astronomers Discover 83 Supermassive Black Holes in the Early Universe
Astronomers Discover 83 Supermassive Black Holes in the Early Universe March 13, 2019

A team of astronomers has discovered 83 quasars powered by supermassive black holes (SMBHs) in the distant universe, from an epoch when the universe was less than 10 percent of its present age. This finding was made by using the wide-field camera Hyper Suprime-Cam (HSC) mounted on the Subaru Telescope.

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