Feeds

Randy dwarf galaxies are making billions of baby stars

Hubble pervs over distant prolific systems

SANS - Survey on application security programs

The Hubble telescope has picked out distant dwarf galaxies that are churning out stars at an enormous rate compared to the Milky Way.

The 18 tiny galaxies – pictured below – are about a hundred times smaller than our galaxy, but they're birthing stars so furiously that they will see the number of stellar bodies double in just 10 million years. It has taken poor old Milky Way a thousand times longer to double its star population.

"The galaxies have been there all along, but up until recently astronomers have been able only to survey tiny patches of sky at the sensitivities necessary to detect them," said Arjen van der Wel of the Max Planck Institute for Astronomy in Heidelberg. "We weren't looking specifically for these galaxies, but they stood out because of their unusual colours."

Van der Wel is lead author of a paper on the results being published online on 14 November in The Astrophysical Journal.

Just look at the little blighters (click to enlarge)

The observations were part of the Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey (CANDELS), a three-year study that aims to analyse the most distant galaxies in the universe. CANDELS is the first census of dwarf galaxies at such an early epoch of their existence, according to a NASA statement.

Recent surveys of the closer-to-home dwarf galaxies, which have a few billion stars and orbit the much larger Milky Way, have shown that their star formation is a slow process that takes billions of years. However the similarly sized distant systems are popping out stars at a rapid rate, forcing boffins to rethink what they know about dwarf galaxy evolution.

The observations suggest that the newly discovered galaxies were common around nine billion years ago, but it's a mystery why they are creating stars so fast. ®

3 Big data security analytics techniques

More from The Register

next story
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
Opportunity selfie: Martian winds have given the spunky ol' rover a spring cleaning
Power levels up 70 per cent as the rover keeps on truckin'
Elon Musk's LEAKY THRUSTER gas stalls Space Station supply run
Helium seeps from Falcon 9 first stage, delays new legs for NASA robonaut
Dragon capsule arrives at space station for Easter Sunday delivery
SpaceX reports Falcon booster made controlled touchdown in ocean
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.
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.
The benefits of software based PBX
Why you should break free from your proprietary PBX and how to leverage your existing server hardware.
SANS - Survey on application security programs
In this whitepaper learn about the state of application security programs and practices of 488 surveyed respondents, and discover how mature and effective these programs are.
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.