European Southern Observatory (ESO) has captured an image of the Sculptor dwarf galaxy , a galaxy far near the Milky Way but with a very different history our personality.
The image has been picked up by the Wide Field Imager camera installed on the MPG / ESO telescope 2, 2 meters, located in La Silla (Chile).
Although it is very faint and difficult to see, the dwarf galaxy Sculptor is a very valuable object for astronomers, especially for studying how they form the stars and galaxies in the universe.
galaxy is much smaller and older than ours and is also one of the fourteen satellite galaxies that orbit near Halo the Milky Way, a spherical region that extends far beyond the spiral arms of our galaxy.
As the name suggests, the Sculptor dwarf galaxy is in the southern constellation Sculptor, about 280,000 years Earth light, despite its proximity, was not discovered until 1937, as their stars are faint and dim and fade into the sky.
It is believed that the Milky Way, like all great galaxies, formed from the accumulation of smaller galaxies during the early days of the universe, and if some of these smaller galaxies still exist today, should contain many very old stars.
The dwarf galaxy Sculptor fits perfectly, because it is a primordial galaxy with many stars very old , visible in the image captured by the Hubble Observatory.
The stars in dwarf galaxies inside, as the Sculptor dwarf galaxy may exhibit complex star formation histories but like most of the stars in these dwarf galaxies have been isolated from each other and have not interacted for thousands millions of years, each collection of stars has charted its own evolutionary course.
Studying the similarities in the stories of these dwarf galaxies and explain their occasional outliers, help explain the development of all galaxies, from small dwarfs even the largest spirals.
For astronomers, there is certainly much to learn from the shy residents of the Milky Way. EFE
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