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Most detailed infrared image of Milky Way's stellar nursery captured

Washington, Thu, 09 Feb 2012 ANI

Washington, Feb 9 (ANI): Using the power of Very Large Telescope and an infrared-sensitive camera, researchers have snapped the most detailed infrared image of the Carina Nebula stellar nursery acquired so far.


Deep in the heart of the southern Milky Way lies a stellar nursery called the Carina Nebula. It is about 7500 light-years from Earth in the constellation of Carina (The Keel).


The Carina nebula is spectacular in normal visible-light pictures, but many of its secrets are hidden behind thick clouds of dust.


To penetrate this veil a European team of astronomers, led by Thomas Preibisch (University Observatory, Munich, Germany), has used the power of ESO's Very Large Telescope together with an infrared-sensitive camera called HAWK-I (2) to take the most comprehensive infrared image of the Carina Nebula stellar nursery ever.


Many previously hidden features, scattered across a spectacular celestial landscape of gas, dust and young stars, have emerged. This is one of the most dramatic images ever created by the VLT.


The Carina Nebula, a cloud of glowing gas and dust, is one of the closest incubators of very massive stars to the Earth and includes several of the brightest and heaviest stars known.


One of them, the mysterious and highly unstable star Eta Carinae, was the second brightest star in the entire night sky for several years in the 1840s and is likely to explode as a supernova in the - by astronomical standards -near future.


The Carina Nebula is a perfect laboratory for astronomers studying the violent births and early lives of stars.


Hundreds of individual images have been combined to create this picture, which is the most detailed infrared mosaic of the nebula ever taken and one of the most dramatic images ever created by the VLT.


It shows not just the brilliant massive stars, but hundreds of thousands of much fainter stars (3) that were previously invisible.


The dazzling star Eta Carinae itself appears at the lower left of the new picture. It is surrounded by clouds of gas that are glowing under the onslaught of fierce ultraviolet radiation.


Across the image there are also many compact blobs of dark material that remain opaque even in the infrared. These are the dusty cocoons in which new stars are forming.


Over the last few million years this region of the sky has formed large numbers of stars both individually and in clusters.


The bright star cluster close to the centre of the picture is called Trumpler 14. Although this object is seen well in visible light, many more, fainter, stars can be seen in this infrared view.


And towards the left side of the image a small concentration of stars that appear yellow can be seen. This grouping was seen for the first time in this new data from the VLT: these stars cannot be seen in visible light at all. This is just one of many new objects revealed for the first time in this spectacular panorama. (ANI)


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