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Supermassive Stars

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Could JWST’s Tiny Dots Hint at the Universe’s First Monster Stars
science21 days ago

Could JWST’s Tiny Dots Hint at the Universe’s First Monster Stars

A study linked to the James Webb Space Telescope’s “little red dots” proposes they could be the first generation of supermassive stars (Population III) rather than powered black holes. The team modeled metal-free supermassive stars approaching a million solar masses and found their brightness and spectral features match two observed dots, MoM-BH*-1 and The Cliff, suggesting these stars might eventually collapse into the universe’s first supermassive black holes. If correct, these stars would live only a very short time (around 10,000 years at such masses), limiting how often we might see them; lack of X-ray signals could fit the star scenario, though accreting black holes remain an alternative. Future radio observations could decisively test the idea by detecting emission that would escape if black holes power the dots.

via Live Science|
#black-holes#jwst#little-red-dots
"Captivating Kaleidoscope: The Enigmatic Blue Core of a Colorful Heart"
astronomy2 years ago

"Captivating Kaleidoscope: The Enigmatic Blue Core of a Colorful Heart"

The Heart Nebula, also known as the Running Dog Nebula, is a colorful feature in the Cassiopeia constellation located about 7,500 light-years from Earth. Spanning an area larger than the Moon, the nebula's shape is influenced by supermassive stars in its core, with the blue colors resulting from ionized oxygen and sulfur. The image, captured by Paul Macklin, combines four separate mosaics and showcases the beauty of the universe.

via Ars Technica|
#astronomy#astrophotography#cassiopeia-constellation
The Origins of Globular Clusters: Unveiling Celestial Monsters.
astronomy2 years ago

The Origins of Globular Clusters: Unveiling Celestial Monsters.

Researchers from the universities of Geneva, Paris, and Barcelona have found evidence that supermassive stars existed within globular clusters when they formed 13 billion years ago. These clusters are the universe’s most massive and ancient star groupings, housing up to a million individual stars. The researchers believe that they have detected the initial chemical evidence of these stars in globular proto-clusters, which came into existence approximately 440 million years following the Big Bang. The results were obtained thanks to observations by the James-Webb space telescope.

via SciTechDaily|
#astronomy#chemical-makeup#globular-clusters
First detection of monster stars 10,000 times larger than the Sun.
astronomy2 years ago

First detection of monster stars 10,000 times larger than the Sun.

Scientists using the James Webb Space Telescope have discovered evidence of "monster stars" that were 10,000 times bigger than the Sun and formed in the early universe. These stars were found in globular clusters, which are collections of between 100,000 and 1 million stars that were formed at the same time. The cores of these stars were much hotter than those seen in stars today, and scientists suggest it could be due to an excess of hydrogen burning at high temperatures. Most of these globular clusters are approaching the end of their life spans, but the discovery could provide important insights into the formation of supermassive stars.

via indy100|
#astronomy#astrophysics#early-universe
First-ever detection of 'monster stars' 10,000 times larger than the Sun
astronomy2 years ago

First-ever detection of 'monster stars' 10,000 times larger than the Sun

Scientists using the James Webb Space Telescope have discovered evidence of "monster stars" that were 10,000 times bigger than the Sun and formed in the early universe. These stars were found in globular clusters, which are collections of between 100,000 and 1 million stars that were formed at the same time. The cores of these stars were much hotter than those seen in stars today, and scientists suggest it could be due to an excess of hydrogen burning at high temperatures. Most of these globular clusters are approaching the end of their life spans, but the discovery could provide important insights into the formation of supermassive stars.

via indy100|
#astronomy#astrophysics#early-universe
First-ever detection of 'monster stars' 10,000 times larger than the Sun
astronomy2 years ago

First-ever detection of 'monster stars' 10,000 times larger than the Sun

Scientists using the James Webb Space Telescope have discovered evidence of "monster stars" that were 10,000 times bigger than the Sun and formed in the early universe. These stars were found in globular clusters, which are collections of between 100,000 and 1 million stars that were formed at the same time. The cores of these stars were much hotter than those seen in stars today, and scientists suggest it could be due to an excess of hydrogen burning at high temperatures. Most of these globular clusters are approaching the end of their life spans, but the discovery could provide important insights into the formation of supermassive stars.

via indy100|
#astronomy#astrophysics#early-universe
"Discoveries of Massive Celestial Objects in Early Universe"
astronomy2 years ago

"Discoveries of Massive Celestial Objects in Early Universe"

A new study published in Astronomy & Astrophysics reveals that the weird composition of globular clusters may be the result of being baked by gigantic “monster stars” when the universe was young. These monster stars, 5,000 to 10,000 times the size of the Sun, quickly fused material into increasingly enriched matter, then spread that matter throughout the molecular cloud in a heterogeneous manner, which explains why some stars in a cluster will have significantly higher or lower concentrations of certain elements. The James Webb Space Telescope has confirmed high proportions of nitrogen in a globular cluster located 13.3 billion light-years away, which could only have been formed in the core of a supermassive star.

via Yahoo Entertainment|
#astronomy#cosmic-formation#globular-clusters
Webb Telescope Discovers Monster Stars and Ancient Galaxies at the Dawn of Time.
astronomy2 years ago

Webb Telescope Discovers Monster Stars and Ancient Galaxies at the Dawn of Time.

The James Webb Space Telescope has provided evidence of the presence of supermassive stars in the early Universe, with masses up to 10,000 Suns. The evidence comes from the study of globular clusters, which contain stars with similar chemical properties, suggesting they were born from the same cloud of gas. These clusters exhibit chemical abundance ratios that vary from star to star, which can be explained by hydrogen burning at extremely high temperatures in the cores of massive stars. The researchers hope to obtain more data on early galaxies from JWST to identify these early supermassive stars and resolve other mysteries, such as the formation of supermassive black holes.

via ScienceAlert|
#astronomy#chemical-abundances#early-universe
'Celestial Monster' Stars Discovered by James Webb Telescope at Dawn of Time
astronomy2 years ago

'Celestial Monster' Stars Discovered by James Webb Telescope at Dawn of Time

The James Webb Space Telescope has discovered evidence of millions of supermassive stars up to 10,000 times the mass of the sun hiding at the dawn of the universe. These "celestial monsters" could shed light on how our universe was first seeded with heavy elements. Researchers found chemical traces of the gigantic stars inside globular clusters, many of which are among the most ancient to have ever formed in our universe. The researchers will look across more globular clusters in more galaxies to see if their discovery holds elsewhere.

via Livescience.com|
#astronomy#early-universe#globular-clusters
Webb Telescope Discovers Massive 'Celestial Monster' Stars at Dawn of Time.
astronomy2 years ago

Webb Telescope Discovers Massive 'Celestial Monster' Stars at Dawn of Time.

The James Webb Space Telescope has discovered evidence of millions of supermassive stars up to 10,000 times the mass of the sun, dubbed "celestial monsters," hiding at the dawn of the universe. These stars could shed light on how our universe was first seeded with heavy elements. Chemical traces of the gigantic stars were found inside globular clusters, which are among the most ancient to have ever formed in our universe. The researchers will look across more globular clusters in more galaxies to see if their discovery holds elsewhere.

via Yahoo News|
#astronomy#early-universe#globular-clusters
science2 years ago

'Celestial Monster' Stars Discovered by James Webb Telescope at Dawn of Time

The James Webb Space Telescope has discovered evidence of millions of supermassive stars up to 10,000 times the mass of the sun, dubbed "celestial monsters," hiding at the dawn of the universe. Born just 440 million years after the Big Bang, the stars could shed light on how our universe was first seeded with heavy elements. Researchers found chemical traces of the gigantic stars inside globular clusters, many of which are among the most ancient to have ever formed in our universe.

via Yahoo Life|
#astronomy#astrophysics#early-universe
Webb telescope detects massive stars in the universe.
science2 years ago

Webb telescope detects massive stars in the universe.

The James Webb Space Telescope has helped astronomers detect the first chemical signs of supermassive stars, which are celestial monsters blazing with the brightness of millions of Suns in the early universe. The team of European researchers behind the study previously theorised the existence of supermassive stars in 2018 in an attempt to explain one of the great mysteries of astronomy. They found the chemical signs in the galaxy GN-z11, which is more than 13 billion light years away.

via DAWN.com|
#astronomy#chemical-elements#globular-clusters