Feeds

Long time ago? Galaxy far, far away? You ain't seen nothing yet

Promiscuous early galaxy has a multitude of suns

3 Big data security analytics techniques

Pics Astronomers have glimpsed the most distant galaxy known to Man: it's an early cluster system more than 13 billion light-years away and was formed barely 700 million years after the Big Bang.

Z8_GND_5296 galaxy spitting out stars

Z8_GND_5296 galaxy spitting out stars

Galaxy Z8_GND_5296 was first spotted using the infrared hardware added to the Hubble telescope in 2009 in part of a month-long survey of distant star systems. Teams at the University of Texas and Texas A&M University put aside their historic rivalry to take part in research to cross-reference the space telescope's findings using the Keck Observatory's Keck I telescope in Hawaii.

Z8_GND_5296 has a redshift rating of 7.51, the highest yet confirmed. NASA has a tentative spotting of a galaxy formed 380 million years after the Big Bang with a redshift of 11.9, but that figure is unconfirmed thus far. The Texans has now confirmed the current figure by eliminating the possibility of signal distortion, making this the oldest galaxy spotted so far, they claim.

"Finding one galaxy in this way is a triumph; it proves we can do this, but we only have one," Casey Papovich, team member and associate professor at Texas A&M University told The Register.

Z8_GND_5296 was one of over 100,000 galaxies discovered in the Cosmic Assembly Near-IR Deep Extragalactic Legacy Survey (CANDELS), a month-long scan by the Hubble telescope – the longest time the hardware has been focused on a single job. The samples from CANDELS were whittled down to 43 likely candidates before secondary measurement began.

CANDELS galaxy survey

CANDELS lights up the sky

The galaxy differs from younger systems, like our own Milky Way, in that it produces a 150 times more stars, or so the team estimates. Other galaxies in the same zone of the universe are also highly prolific, suggesting it was a vigorous time of universal expansion, but Papovich said this raised some important questions for cosmologists.

He explained that the initial survey of older galaxies should have yielded signals back from at least 20, but so far only this one has been detected. Papovich and the team are working on the theory that the paucity of signals is down to a fundamental shift in the makeup of hydrogen in the universe, which shifted from a neutral to ionised state.

It's going to take at least 10 galactic finds before the team can get the evidence they want, Papovich said, and that's going to take time and some new hardware. Specifically, the team want to get time on the Giant Magellan Telescope, a massive 25m diameter telescope currently being built in Chile and due to come online in 2020. ®

Top three mobile application threats

More from The Register

next story
So, just how do you say 'the mutt's nuts' in French?
Vital linguistic question interrupts LOHAN spaceplane mission
95 floors in 43 SECONDS: Hitachi's new ultra-high-speed lift
Guangzhou skyscraper denizens to hold on to hats
Most Americans doubt Big Bang, not too sure about evolution, climate change – survey
Science no match for religion, politics, business interests
KILLER SPONGES menacing California coastline
Surfers are safe, crustaceans less so
Discovery time for 200m WONDER MATERIALS shaved from 4 MILLENNIA... to 4 years
Alloy, Alloy: Boffins in speed-classification breakthrough
LOHAN and the amazing technicolor spaceplane
Our Vulture 2 livery is wrapped, and it's les noix du mutt
Liftoff! SpaceX Falcon 9 lifts Dragon on third resupply mission to ISS
SpaceX snaps smartly into one-second launch window
STEALTHY NANOROBOTS dress up as viruses, prepare to sneak into YOUR BODY
Cloaking techniques nicked from viruses tackle roadblocks on way to medical frontier
prev story

Whitepapers

Securing web applications made simple and scalable
In this whitepaper learn how automated security testing can provide a simple and scalable way to protect your web applications.
3 Big data security analytics techniques
Applying these Big Data security analytics techniques can help you make your business safer by detecting attacks early, before significant damage is done.
The benefits of software based PBX
Why you should break free from your proprietary PBX and how to leverage your existing server hardware.
Mainstay ROI - Does application security pay?
In this whitepaper learn how you and your enterprise might benefit from better software security.
Combat fraud and increase customer satisfaction
Based on their experience using HP ArcSight Enterprise Security Manager for IT security operations, Finansbank moved to HP ArcSight ESM for fraud management.