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The Hubble Space Telescope from NASA / ESA has provided an unprecedented snapshot of a small galaxy called ESO 338-4.
This Hubble image shows the blue compact dwarf galaxy ESO 338-4. Image credit: NASA / ESA / Hubble.
ESO 338-4, also known as LEDA 63240 and IRAS 19245-4140, is classified in the blue compact dwarf galaxy.
It resides in the Corona Australis constellation, about 100 million light-years away from Earth.
Blue compact dwarf galaxies get their name from the extremely blue regions that form stars and are often found in their nuclei.
One of these areas is visible in ESO 338-4, which is populated by bright young stars that consume a lot of hydrogen.
These massive stars are doomed to a short existence, despite their vast reserves of hydrogen.
The nuclear reactions in the nuclei of these stars will burn these reserves in just millions of years.
The young blue stars nestled in a cloud of dust and gas in the center of this image are the result of a recent galaxy fusion between a wandering galaxy and ESO 388-4.
This galactic interaction disrupted the clouds of gas and dust surrounding the galaxy and led to the rapid formation of a new population of stars.
The color image of ESO 338-4 was performed from separate exposures taken in the visible, ultraviolet and infrared regions of the spectrum with the Advanced Camera for Surveys (ACS) software, Camera Wide Field 3 (WFC3) and Hubble Space Telescope Imaging Spectrograph.
Five filters were used to sample different wavelengths.
The color results from the assignment of different hues to each monochromatic image associated with an individual filter.
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