recommend
astronomers have created the best ever 3D map of the central region of our Milky Way: They found that the shape of the central thickening of our home galaxy is like a peanut
div.
The thickening inside our home galaxy is shaped like a peanut. This could be seen from the best ever three-dimensional map of the central region, such as the European Southern Observatory ESO announced in Garching near Munich. Researchers had mapped to the center of the Milky Way with infrared telescopes of the ESO.
Our Milky Way is a spiral disk with a central star thickening, English “bulge.” This huge, centralized cloud of about 10 billion stars has a diameter of thousands of light years. So far, however, it was not able to understand their structure and origin.
view of the center had been blocked
The approximately 27,000 light years distant center of our galaxy is difficult to observe because seen from Earth, large gas and dust clouds block the view.
Previous observations had already supplied evidence that the bulge could have a mysterious X-shaped structure. But now, astronomers get a much clearer view of the structure of the bulge light of new observations of several ESO telescopes.
Data from the Vista telescope of ESO in Chile researcher Christopher Wegg to have the distance from the Max Planck Institute for Extraterrestrial Physics (MPE) in Garching now around determined 22 million stars in the bulge and won a three-dimensional map of the central thickening thereof (see illustration left).
As a peanut encased in their shell
“We have found that the inner region of our galaxy shrouded from the side like a peanut in its shell looks like from above, however, such as an elongated bar,” says MPE Group leader Ortwin Gerhard in the esoteric message.
astronomers believe that the Milky Way was originally a flat disc, through the center of the passage of time a bar has formed from stars. This bar has thickened and is grown to the peanut shape.
The researchers hope that the measurement of three-dimensional density distribution of the bulge is now contribute to the development of both models for the galaxies in our Milky Way as well as for spiral galaxies generally narrow it down.
Photo: MPE 3D representation of the galactic bulge. The center of the galaxy is like a peanut wrapped
© Axel Springer AG 2013. All rights reserved
No comments:
Post a Comment