Press Release

2014

It's Filamentary: How Galaxies Evolve in the Cosmic Web
It's Filamentary: How Galaxies Evolve in the Cosmic Web December 2, 2014

International team of astronomers proposes that filaments in the cosmic web played a critical role in the distant universe.

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Subaru Telescope Detects Sudden Appearance of Galaxies in the Early Universe
Subaru Telescope Detects Sudden Appearance of Galaxies in the Early Universe November 18, 2014

A team of astronomers used Suprime-Cam on the Subaru Telescope to look back more than 13 billion years and found seven early galaxies that appeared quite suddenly within 700 million years of the Big Bang.

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Confirming a 3-D Structural View of a Quasar Outflow ~ Conclusions drawn from additional observations ~
Confirming a 3-D Structural View of a Quasar Outflow ~ Conclusions drawn from additional observations ~ October 28, 2014

A team of astronomers revisited a distant gravitationally-lensed quasar with the Subaru Telescope and concluded that the images indeed present a 3-D view of the structure around a quasar. They were able to confirm their earlier speculation through additional observations.

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Three eyes on the sky track laws of Nature 10 billion years ago
Three eyes on the sky track laws of Nature 10 billion years ago September 11, 2014

An international team led by researchers from Swinburne University of Technology measured the important parameter of this universe, by using Subaru Telescope and two other ground-based telescopes. Detailed observations of a quasar HS 1549+1919 provided most reliable information about the electromagnetism over 10 billion years.

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A Chemical Signature of First-Generation Very-Massive Stars
A Chemical Signature of First-Generation Very-Massive Stars August 21, 2014

A team of astronomers has used the used the 8.2 m Subaru Telescope's High Dispersion Spectrograph to discover a low-mass star that provides observational evidence to support numerical simulations of the existence of very-massive stars among the first generation of stars formed after the Big Bang.

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Umbrella Galaxy's Merger Models the Cosmic Food Chain
Umbrella Galaxy's Merger Models the Cosmic Food Chain July 1, 2014

Scientists have used the Subaru Telescope and the W. M. Keck Observatory to study the Umbrella Galaxy (NGC 4651), a twin of the Milky Way Galaxy, and to accurately model how it is swallowing a smaller galaxy. Their findings reveal insights into galactic behavior and contribute to a better understanding of how structure forms in the Universe.

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Jupiter's Moons Remain Slightly Illuminated, Even in Eclipse
Jupiter's Moons Remain Slightly Illuminated, Even in Eclipse June 18, 2014

Astronomers using the Subaru Telescope and Hubble Space Telescope have found that Jupiter's Galilean satellites (Io, Europa, Ganymede, and Callisto) remain slightly bright (up to one millionth of their normal state) even when in the Jovian shadow and not directly illuminated by the Sun.

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Revealing the Complex Outflow Structure of Binary UY Aurigae
Revealing the Complex Outflow Structure of Binary UY Aurigae May 20, 2014

An international team of astronomers has revealed a complicated outflow structure in the binary UY Aurigae. The team observed the binary using the Gemini North's NIFS (Near-Infrared Integral Field Spectrometer) with its adaptive optics. The team found that the primary star has a wide, open outflow, while the secondary star has a well-collimated jet.

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Spectrum of Gamma-Ray Burst's Afterglow Indicates the Beginning of the Re-ionization Process
Spectrum of Gamma-Ray Burst's Afterglow Indicates the Beginning of the Re-ionization Process April 29, 2014

A research team has discovered an indicator of when re-ionization of the primordial Universe began after its dark age. The team used the Faint Object Camera and Spectrograph mounted on the Subaru Telescope to thoroughly study the visible wavelength spectrum of the afterglow of a gamma-ray burst. The team's direct measurement of the absorption features in the spectrum of the afterglow toward GRB 130606A has yielded the best estimate of the proportion of neutral hydrogen gas in the early Universe.

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Subaru Telescope Detects Rare Form of Nitrogen in Comet ISON
Subaru Telescope Detects Rare Form of Nitrogen in Comet ISON Feburary 19, 2014

A team of astronomers used the Subaru Telescope's High Dispersion Spectrograph to detect two forms of nitrogen in Comet ISON in November 2013. This is the first time that astronomers have reported a clear detection of the relatively rare isotope 15NH2 in a single comet and also measured the relative abundance of two different forms of nitrogen of cometary ammonia (NH3) The results indicate that there may have been two distinct reservoirs of nitrogen in the massive, dense cloud from which our Solar System possibly evolved.

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Active Supermassive Black Holes Revealed in Merging Galaxies
Active Supermassive Black Holes Revealed in Merging Galaxies January 27, 2014

A team of astronomers has conducted infrared observations of luminous, gas-rich, merging galaxies with the Subaru Telescope to study active, mass-accreting supermassive black holes (SMBHs). They found that at least one SMBH almost always becomes active and luminous by accreting a large amount of material. However, only a small fraction of the observed merging galaxies show multiple, active SMBHs. These results suggest that local physical conditions near SMBHs rather than general properties of galaxies primarily determine the activation of SMBHs.

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