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The Mysteries of UGC 8201
RA 13h 6m 26.82s Dec 67° 42' 41.29"
15 million light years
3.28 x 3.33 arcminutes
North is 11.4° right of vertical
ESA/Hubble & NASA
March 9, 2015
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ABOUT THIS IMAGE:
UGC 8201 is at an important phase in its evolution. It has recently finished a long period of star formation, which had significant impact on the whole galaxy. This episode lasted for several hundred million years and produced a high number of newborn bright stars. These stars can be seen in this image as the dominating light source within the galaxy. This process also changed the distribution and amount of dust and gas in between the stars in the galaxy.
Such large star formation events need extensive sources of energy to trigger them. However, compared to larger galaxies, dwarf galaxies lack such sources and they do not appear to have enough gas to produce as many new stars as they do. This raises an important unanswered question in galaxy evolution: How do relatively isolated, low-mass systems such as dwarf galaxies sustain star formation for extended periods of time?
to its relative proximity to Earth UGC 8201 is an excellent object for
research and provides an opportunity to improve our understanding of how
dwarf galaxies evolve and grow.