Press Release

2015

"Fossils" of Galaxies Reveal the Formation and Evolution of Massive Galaxies
"Fossils" of Galaxies Reveal the Formation and Evolution of Massive Galaxies September 24, 2015

An international team observed massive dead galaxies in the universe 4 billion years after the Big Bang with the Subaru Telescope and discovered that their stellar content is strikingly similar to that of massive elliptical galaxies seen locally. They also identified progenitorsof them, unveiling the formation and evolution of massive galaxies across 11 billion years of cosmic time.

More
Discovering Dust-Obscured Active Galaxies as They Grow
Discovering dust-obscured active galaxies as they grow August 26, 2015

A group of researchers from Ehime University etc. has performed an extensive search for Dust Obscured Galaxies (DOGs) using data obtained from the Subaru Strategic Program with Hyper Suprime-Cam (HSC). The very wide-field of view of HSC is ideal for searching this rare and important class of galaxies. The research group discovered 48 DOGs, and has measured how common they are. Since DOGs are thought to harbor a rapidly growing black hole in their centers, these results give us clues for understanding the evolution of galaxies and supermassive black holes.

More
The Ghostly Remnants of Galaxy Interactions Uncovered in a Nearby Galaxy Group
The Ghostly Remnants of Galaxy Interactions Uncovered in a Nearby Galaxy Group August 4, 2015

Astronomers used HSC on the Subaru Telescope to cover a large area toward M81 with neighboring M82 and NGC 3077 galaxies and successfully resolved the distribution of the young stars.

More
Hiding in Plain Sight: Undergraduates Discover the Densest Galaxies Known
Hiding in Plain Sight: Undergraduates Discover the Densest Galaxies Known July 27, 2015

Discoveries of the two compact galaxies that are the densest known will shed light on the missing link between the massive globular clusters and the ultra-compact dwarf galaxies.

More
Dark Matter Map Begins to Reveal the Universe's Early History
Dark Matter Map Begins to Reveal the Universe's Early History July 1, 2015

Researchers from the NAOJ and other institutions have found nine immense concentrations of dark matter in a 2.3 square degree area of sky using the HSC installed on the Subaru Telescope. The team's goal is to create a map of dark matter spanning a thousand square degrees of sky that will reveal the expansion history of the universe with precise detail.

More
Unexpectedly Little Black-hole Monsters Rapidly Suck up Surrounding Matter
Unexpectedly Little Black-hole Monsters Rapidly Suck up Surrounding Matter June 25, 2015

Researchers found evidence that ultra-luminous X-ray sources (ULXs) exhibiting strong outflows. This suggest that the black holes in these ULXs must be much smaller than expected with high rate of accretion of matters onto the black hole.

More
Astronomers Discover More than 800 Dark Galaxies in the Famous Coma Cluster
Astronomers Discover More than 800 Dark Galaxies in the Famous Coma Cluster June 22, 2015

A group of researchers has discovered 854 "ultra dark galaxies" in the Coma Cluster by analyzing archival data from the Subaru Telescope. The initial discovery was a surprise in 2014, and the new discovery of more than 800 suggests galaxy clusters as the key environment for the evolution of these mysterious dark galaxies.

More
Best Observational Evidence of First Generation Stars in the Universe
Best Observational Evidence of First Generation Stars in the Universe June 17, 2015

A research team discovered surprisingly bright very young galaxies using the Subaru Telescope and other telescopes. One of these is by far the brightest galaxy ever observed at this early stage in the Universe. The newly found galaxy, labelled CR7, is three times brighter than the brightest distant galaxy known up to now.

More
Discovery of Multiple Ring-Like Gaps in a Protoplanetary Disk
Discovery of Multiple Ring-Like Gaps in a Protoplanetary Disk June 16, 2015

By using the Subaru Telescope, a research team found a double-ring structure of the protoplanetary disk of gas and dust around a young star similar to the Sun. The structure suggests that ongoing planet formation is occuring in the disk, and provides a good picture of how the early formation of our own solar system might have looked.

More
Discovery of an Extremely Young Stellar Clump in the Distant Universe
Discovery of an Extremely Young Stellar Clump in the Distant Universe May 14, 2015

A group of researchers from the "Service d'Astrophysique-Laboratoire AIM" of CEA-IRFU led by Anita Zanella discovered the birth cry of a massive star-forming clump in the disk of a very distant galaxy.

More
Subaru Telescope Observers Superflare Stars with Large Starspots
Subaru Telescope Observers Superflare Stars with Large Starspots May 11, 2015

A team of astronomers has used the High Dispersion Spectrograph on the Subaru Telescope to conduct spectroscopic observations of Sun-like "superflare" stars first observed and cataloged by the Kepler Space Telescope. The investigations focused on the detailed properties of these stars and confirmed that Sun-like stars with large starspots can experience superflares.

More
Astronomers Find New Details about Star Formation in Ancient Galaxy Protoclusters
Astronomers Find New Details about Star Formation in Ancient Galaxy Protoclusters April 20, 2015

A team of astronomers tracked velocity structures and gaseous metallicities in galaxies in two protoclusters located in the direction of the constellation Serpens and concluded that they are in the process of cluster formation that has led to present-day galaxy clusters.

More
Subaru Telescope Observes Rapid Changes in a Comet's Plasma Tail
Subaru Telescope Observes Rapid Changes in a Comet's Plasma Tail March 4, 2015

Images from a December 2013 observation of the comet C/2013 R1 (Lovejoy) reveal clear details about rapidly changing activity over a period of 20 minutes in that comet's plasma tail. To get this image, astronomers used Subaru Telescope's wide-field prime-focus Suprime-Cam, which resulted in gaining precious knowledge regarding the extreme activity in the tail as the comet neared the Sun.

More
Classical Nova Explosions are Major Lithium Factories in the Universe
Classical Nova Explosions are Major Lithium Factories in the Universe February 18, 2015

Using the 8.2-meter Subaru Telescope High Dispersion Spectrograph (HDS), a team of astronomers observed Nova Delphini 2013 and discovered that the outburst is producing a large amount of lithium.

More



Guidelines for use

document navigation

local navigation

Press Release