Sculptor Dwarf Galaxy
Article Here: http://www.quantumday.com/2015/09/ima...
The Sculptor Dwarf Galaxy — also known as the Sculptor Dwarf Elliptical or the Sculptor Dwarf Spheroidal — is a dwarf spheroidal galaxy, and is one of the fourteen known satellite galaxies orbiting the Milky Way. This is not to be confused with the similarly named and much brighter Sculptor Galaxy which is located in the same constellation of Sculptor.
A dwarf galaxy is a small galaxy composed of up to several billion stars. A regular galaxy like the Milky Way has 200 to 400 billion stars. Since these dwarf galaxies are small, they have been observed to be pulled toward and merge with nearby spiral galaxies.
This video zoom takes a closer look at the Sculptor Dwarf Galaxy, pictured in new image from the Wide Field Imager camera, installed on the 2.2-metre MPG/ESO telescope at ESO’s La Silla Observatory. This elusive galaxy is a close neighbour of our galaxy, the Milky Way. Despite their proximity, both galaxies have very distinct histories and characters. This galaxy is much smaller, fainter and older than the Milky Way. It appears here as a rich cloud of faint stars at the centre of the image at the start, and completely fills the frame later on. Here and there much more distant galaxies can be spotted between the stars of the Sculptor Dwarf.
Credit:
DSS, ESO.
Music: Johan Monell (http://www.johanmonell.com)
Usage of ESO Images and Videos: http://www.eso.org/public/outreach/co...
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