Uncovering the Origins of Galaxies' Halos
November 20, 2017
Using HSC on the Subaru Telescope, researchers from Tohoku University and NAOJ have identified 11 dwarf galaxies and two star-containing halos in the outer region of a large spiral galaxy 25 million light-years away from Earth. The findings provide new insight into how these 'tidal stellar streams' form around galaxies...
Minor Merger Kicks Supermassive Black Hole into High Gear
October 30, 2017
A team of researchers used the Subaru Telescope to study the galaxy M77, which is famous for its super-active nucleus that releases enormous energy. The unprecedented deep image of the galaxy reveals evidence of a hidden minor merger billions of years ago. The discovery gives crucial evidence for the minor merger origin of active galactic nuclei...