The Hubble team has released a close-up image of UGC 8091, a dwarf irregular galaxy that resembles a glittering festive snow globe.
This Hubble image shows UGC 8091, a dwarf irregular galaxy about 7 million light-years away in the constellation Virgo. The color images were created from separate exposures taken with Hubble’s Advanced Survey Camera (ACS) and Wide Field Camera 3 (WFC3). Image credits: NASA / ESA / Hubble / Yumi Choi, NSF’s NOIRLab / Caroline Gilbert, STScI / Julien Dalcanton, Center for Computational Astrophysics and University of Washington Flatiron Institute.
UGC 8091 It is located in the constellation Virgo, about 7 million light years away from Earth.
Also known as GR 8, DDO 155, LEDA 44491, or TC 257, this galaxy discovered It was discovered by astronomers at Lick Observatory in the 1940s and 1950s.
“Unlike other galaxies whose stars appear more regular, UGC 8091 is classified as an irregular galaxy,” said the Hubble astronomer.
“It’s not hard to see why. The stars that make up this cluster look more like a tangle of bright string lights than a galaxy.”
“While some irregular galaxies are thought to have become entangled due to intense internal activity, others are known to have formed through interactions with neighboring galaxies.”
“The result is a class of galaxies with a wide range of sizes and shapes, including these galaxies with diffuse and scattered stars.”
UGC 8091, also classified as a dwarf irregular galaxy, contains about 1 billion stars.
“That’s a huge amount of light, but not for a galaxy. Our Milky Way galaxy is thought to contain more than 100 billion stars, and other galaxies have trillions. “There could be as many stars as possible,” the astronomers said.
“Dwarf galaxies often orbit around larger galaxies, and their lower masses make them vulnerable to interference and consumption from larger neighbors, and in the process they destroy twisted dwarfs like UGC 8091. A galaxy is generated.”
“This type of galaxy is thought to have characteristics similar to the very old and distant galaxies seen in deep-field images.”
“Investigating the composition of dwarf galaxies and their stars, particularly their low metal content, could help uncover evolutionary links between these ancient galaxies and more modern galaxies like ours. We hope it will be helpful.”
To do this, researchers have carefully examined UGC 8091’s colorful stars.
“By using filters that restrict the light entering Hubble’s instruments to very specific wavelength ranges, we can pick out different features of galaxies,” the researchers said.
“These filtered images can be recombined to create a full-color image. An astonishing 12 filters are combined to produce this image, capturing light from the mid-UV to the red end of the visible spectrum. Contributing.”
“The blooming red spots represent light emitted by excited hydrogen molecules in hot, energetic stars formed in recent starbursts.”
“The other sparks in this image are a mixture of older stars.”
Source: www.sci.news
