. Medical and Hospital News .




.
STELLAR CHEMISTRY
A cosmic superbubble
by Staff Writers
Paris, France (SPX) Jul 21, 2011

ESO's Very Large Telescope has been used to obtain this view of the nebula LHA 120-N 44 surrounding the star cluster NGC 1929. Lying within the Large Magellanic Cloud, a satellite galaxy of our own Milky Way, this region of star formation features a colossal superbubble of material expanding outwards due to the influence of the cluster of young stars at its heart that sculpts the interstellar landscape and drives forward the nebula's evolution. Credit: ESO/Manu Mejias

The Large Magellanic Cloud is a small neighbouring galaxy to the Milky Way. It contains many regions where clouds of gas and dust are forming new stars. One such region, surrounding the star cluster NGC 1929, is shown in close-up in this new image from ESO's Very Large Telescope.

This nebula is officially known as LHA 120-N 44, or just N 44 for short. Hot young stars in NGC 1929 are emitting intense ultraviolet light and causing the gas to glow.

This effect highlights the aptly-named superbubble, a vast shell of material around 325 by 250 light-years across. For comparison, the nearest star to our Sun is just over four light-years distant.

The N 44 superbubble has been produced by the combination of two processes. Firstly, stellar winds - streams of charged particles from the very hot and massive stars in the central cluster - cleared out the central region. Then massive cluster stars exploded as supernovae creating shockwaves and pushing the gas out further to form the glowing bubble.

Although the superbubble is shaped by destructive forces, new stars are forming around the edges where the gas is being compressed. Like recycling on a cosmic scale, this next generation of stars will breathe fresh life into NGC 1929.

The image was created by ESO from observational data identified by Manu Mejias, from Argentina, who participated in ESO's Hidden Treasures 2010 astrophotography competition.

The competition was organised by ESO in October-November 2010, for everyone who enjoys making beautiful images of the night sky using astronomical data obtained using professional telescopes.




Related Links
ESO
Stellar Chemistry, The Universe And All Within It

.
Get Our Free Newsletters Via Email
...
Buy Advertising Editorial Enquiries






. Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle



STELLAR CHEMISTRY
Twisted Tale of our Galaxy's Ring
Pasadena CA (JPL) Jul 20, 2011
New observations from the Herschel Space Observatory show a bizarre, twisted ring of dense gas at the center of our Milky Way galaxy. Only a few portions of the ring, which stretches across more than 600 light-years, were known before. Herschel's view reveals the entire ring for the first time, and a strange kink that has astronomers scratching their heads. "We have looked at this region a ... read more


STELLAR CHEMISTRY
Japan eyes $291 bln for reconstruction: reports

Japan names more Fukushima evacuation areas

Tiny robots could find nuclear plant leaks

Japan's lower house approves 2nd recovery budget

STELLAR CHEMISTRY
Cambridge Pixel, Navtech to work together

Second Boeing GPS IIF Satellite Sends First Signals from Space

Boeing: 2nd Boeing GPS IIF Satellite Ready for Launch from Cape Canaveral

Apple makes first S. Korea payout over tracking

STELLAR CHEMISTRY
Speed limit on babies' vision

Brain's 'clock' less accurate with aging

Genetic research confirms that non-Africans are part Neanderthal

New material could offer hope to those with no voice

STELLAR CHEMISTRY
Editing the genome: rewriting the code of life

Loss of large predators disrupting multiple plant, animal and human ecosystems

Batman Bacteria

Kenya burns five tonnes of ivory

STELLAR CHEMISTRY
Swaziland AIDS activists march for drugs

'Swine flu' breath test could reduce future vaccination shortages

AIDS: Science has delivered on HIV prevention. Now what?

Reservoir dogs: Scientists aim at HIV's last holdout

STELLAR CHEMISTRY
China stands firm against Tibet separatism

China tells Tibet monks to 'break with separatists'

Clash in China's Xinjiang killed 20: exile group

China vows to crush stability threats in Tibet

STELLAR CHEMISTRY
Denmark to hand over 24 pirates to Kenya for trial

Chinese ship released by pirates: EU

South Korea jails Somali pirates

US Navy recruits gamers to help in piracy strategy

STELLAR CHEMISTRY
Microsoft profit soars on record revenue

China manufacturing at 28-month low: HSBC

Obama calls new crisis debt talks

More Chinese cities see home prices fall in June


Memory Foam Mattress Review
Newsletters :: SpaceDaily Express :: SpaceWar Express :: TerraDaily Express :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News
.

The content herein, unless otherwise known to be public domain, are Copyright 1995-2011 - Space Media Network. AFP and UPI Wire Stories are copyright Agence France-Presse and United Press International. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement