NOAO Home Page News Archive
The last 5 news items that have appeared on the NOAO Home Page.
July 11, 2017
Image Credit: Zhen-Ya Zheng (SHAO) & Junxian Wang (USTC)
Distant Galaxies ‘Lift the Veil’ on the End of the Cosmic Dark Ages
A study of the distant Universe finds that small star-forming galaxies were abundant when the Universe was only only 800 million years old, a few percent of its present age. The results suggest that the earliest galaxies, which illuminated and ionized the Universe, formed at even earlier times. The study was carried out by an international team, including NOAO astronomer Alistair Walker, using the Dark Energy Camera on the CTIO Blanco telescope.
June 19, 2017
Image Credit: M. A. Newhouse & NOAO/AURA/NSF; inset: S. Sheppard, Carnegie Institution for Science
A New Jovian Mini-Moon
Discovered with DECam on the CTIO Blanco telescope, the diminutive moon S/2017 J1, only a mile across, takes 2 years to complete an orbit around Jupiter. Its retrograde orbit — in the direction opposite to Jupiter’s spin — tells us that the moon originated elsewhere and was captured by Jupiter. The inset shows the discovery images taken by astronomers Scott Sheppard and Chad Trujillo. The discovery brings to 69 the total number of Jovian moons known.
June 05, 2017
Image Credit: Stefan Binnewies and Josef Pöpsel of Capella Observatory (background image); Stephanie Juneau of NOAO and CEA-Saclay (inset)
Blowing the Cover of a Hidden Black Hole
The nearby galaxy NGC 7582 is an extreme example of an “obscured AGN”, a galaxy with an accreting supermassive black hole that is deeply enshrouded in gas and dust. New observations show that the black hole launches a powerful wind, which is confined by a rotating ring of gas and dust 2000 light years in diameter. The ring also contributes to the extreme obscuration of the black hole. The results, reported by a team led by NOAO astronomer Stephanie Juneau, lend new insights into the interaction between black holes and their host galaxies.
May 17, 2017
Punching Above Its Weight, a Brown Dwarf Launches a Parsec-Scale Jet
Astronomers using the SOAR telescope at CTIO have discovered a spectacular extended jet from a young brown dwarf. While young stars are known to launch jets that extend over a light year or more, this is the first such jet from a brown dwarf. The discovery, made by a team that includes NOAO astronomers Cesar Briceno and Steve Heathcote, lends new insight into how substellar objects form.
April 19, 2017
Image Credit: Alexandra Angelich (NRAO/AUI/NSF)
Meet “DeeDee”, a Distant Dwarf in the Outer Solar System
Located 92 AU from the Sun, DeeDee is the second most distant trans-Neptunian object known — only the dwarf planet Eris is further away. Discovered in the Dark Energy Survey, which is being carried out at CTIO, DeeDee is petite, with a diameter ¼ that of Pluto. DeeDee was discovered by an international team, including NOAO astronomers Alistair Walker and Tim Abbott.