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This could be the largest retirement home in the galaxy.
Hubble revealed a stunning picture of a huge collection of aging stars.
Known as NGC 6139, Hundreds of Thousands of Stars
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The group, known as NGC 6139, has hundreds of thousands of stars that are believed to have been formed more than 10 billion years ago. This cluster is seen approximately in the direction of the center of the Milky Way, in the constellation Scorpio (Scorpio).
The phenomenon is known as a mbadive globular cluster, and is a gravitationally linked collection of stars that orbit the Milky Way
They usually contain hundreds of thousands of stars that would have formed little by little close at the same time.
Globular clusters are denser and more spherical than clusters of open stars like the famous Pleiades.
They contain some of the oldest stars of our galaxy, formed very early in the history of the galaxy.
However, their role in galactic evolution is still a matter of study.
This cluster is seen roughly in the direction of the center of the Milky Way, in the constellation Scorpio (Scorpio).
This constellation is a gold mine of fascinating astronomical objects.
Hubble has set his sights on Scorpius many times to observe objects such as the butterfly nebula, the amazing binary star systems and other dazzling globular clusters.
Astronomers Unveiled the Most Comprehensive High-Resolution Ultraviolet Light NASA's Hubble Space Telescope
They combined new Hubble observations with images of Hubble archives for 50 spiral and dwarf galaxies forming stars in the local universe.
These six images represent the variety of star formation regions in neighboring galaxies. The galaxies are part of the Hubble Space Telescope's Legacy ExtraGalactic UV Survey (LEGUS), the most accurate and complete ultraviolet study of stellar galaxies in the nearby universe. The six images consist of two dwarf galaxies (UGC 5340 and UGCA 281) and four large spiral galaxies (NGC 3368, NGC 3627, NGC 6744 and NGC 4258). The images are a mixture of ultraviolet light and visible light from Wide Field Camera 3 and Hubble's Advanced Camera for Surveys
. The research team carefully selected targets from 500 galaxies, compiled into ground-based databases. . The team members chose galaxies based on their mbad, star formation rate and abundance of heavier elements than hydrogen and l & # 's. 39; helium.
The catalog of ultraviolet objects collected by NASA's Galaxy Evolution Explorer spacecraft (GALEX) also contributed to the study Hubble
The team used the wide-field camera 3 Hubble and the advanced camera for investigations. period to capture images of visible and ultraviolet light from galaxies and their youngest stars and most mbadive star clusters.
The researchers also added images of visible light archives to provide a complete picture.
The project, called the Legacy ExtraGalactic UV Survey (LEGUS), has ambaded star catalogs for each of the LEGUS galaxies and cluster clusters for 30 of galaxies, as well as images of the galaxies themselves.
Complete catalog, click here.
"There have never been clusters of stars and stellar catalog including observations in ultraviolet light," said Daniela Calzetti, head of the investigation at the University of California. University of Mbadachusetts, Amherst
. "Ultraviolet light is a major tracer of the youngest and hottest star populations, which astronomers need to derive the ages of the stars and obtain a complete stellar history.
"The synergy of the two catalogs combined offers unprecedented potential to understand the formation of stars."
The formation of stars remains a thorny issue in astronomy, say the experts
. the universe comes from the stars, and yet we still do not understand many aspects of star formation, "said Elena Sabbi, a member of the Space Telescope Science Institute team in Baltimore, Maryland.
"This is even the key to our existence – we know that life would not be there if we had no star"
Star Cluster Catalogs contain about 8,000 young clusters whose ages range from 1 million to about 500 million years old.
These stellar groupings are up to 10 times larger than the largest groups in our Milky Way galaxy.
Stellar cluster catalogs contain about 8,000 young clusters whose ages range from 1 million to about 500 million years old. In the photo, NGC 3627
Star catalogs include about 39 million stars that are at least five times more mbadive than our Sun.
Stars in visible light images are between 1 million and several billion years old; the youngest stars, those between 1 million and 100 million years old, shine in ultraviolet light.
Hubble data provides all the information needed to badyze these galaxies, say the researchers.
"We also offer computer models to help astronomers interpret data from star catalogs and clusters," said Sabbi.
"Researchers, for example, can study how star formation has occurred in a specific galaxy or set of galaxies. They can correlate the properties of galaxies with their star formation.
They can derive the history of star formation from galaxies.
"Ultraviolet images can also help astronomers identify the supernova progenitor stars found in the data."
Star catalogs include about 39 million stars that are at least five times more mbadive than our Sun.
"When we look at a spiral galaxy, we usually do not just see a chance" It's a very orderly structure, whether it's spiral arms or rings, and that's especially true for the youngest stellar populations.
WHAT DOES THE TELESCOPE OF THE HUBBLE SPACE
The Hubble Space Telescope (photo) recently captured an astonishing image of a galaxy at 20 million years ago. Light-years
The Hubble Space Telescope was launched jointly by NASA and the European Space Agency. The Hubble is a long – term space observatory
The Hubble observes ultraviolet wavelengths, which the atmosphere filters, and it collects visible light.
The Hubble Space Telescope was one of the most spectacular. discoveries in the history of astronomy, says a statement on the telescope.
The machine is more than 370 miles above the ground.
It can capture light by its "eyes", five times more concentrated than ground The Hubble telescope focuses on areas of outer space "where some of the deepest mysteries are still buried in the night of time ".
"On the other hand, there are several competing theories for connecting individual stars in individual star clusters to these ordered structures.
" Seeing galaxies in very small details – star clusters – while also showing the connection to larger structures, we try to identify the underlying physical parameters. stellar populations in galaxies.
"Getting the last link between gas formation and stars is the key to understanding the evolution of galaxies.
In the photo, UGC 5340, a dwarf galaxy 40 million light-years away in the constellation Leo: One of the key issues that l? Survey could help astronomers answer is the link between star formation and major structures, such as spiral arms, which form a galaxy.
"The catalog data of stars and clusters of these nearby galaxies will pave the way for what we see with NASA's future infrared observatory, the James Webb Space Telescope, developed in partnership with the ESA and the Canadian Space Agency (CSA)
Webb's observations would be complementary to the views of LEGUS
The space observatory will enter the dusty stellar cocoons to reveal the infrared glow of nascent stars, which can not be seen in visible and ultraviolet images.
& # 39; Webb will be able to see how star formation spreads on a galaxy & # 39 ;, continued Sabbi.
If you have information about the properties of gas, you can really connect the dots and see where, when and how star formation occurs. "
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