Astronomers have identified the oldest known Spiral galaxy In the universe formed about 12.4 billion years ago after rediscovering the vague and forgotten photographs taken by the Atacama Large Millimeter-Wave Submillimeter Wave Array (ALMA).
The new galaxy, named BRI 1335-0417, is 15,000 light-years in diameter and is one-third the size of a spiral home galaxy. Milky Way..The galaxy was formed about 1.4 billion years later big Bang, Is the earliest example of a spiral galaxy. It defeats the oldest spiral before, Detected in 2019By about 1.1 billion years. The oldest known galaxy in existence remains GN-z11, which was formed about 400 million years after the Big Bang. This was previously reported by LiveScience’s sister site. Space.com..
Researchers discovered an ancient galaxy after finding the photo in the ALMA archive. The image may look blurry to the untrained eye, but it actually contains an amazing amount of detail in such distant galaxies.
Takafumi Tsukii, the lead author of the Graduate University for Advanced Studies graduate student, said, “Since I have never seen clear evidence of rotating disks, spiral galaxies, and concentrated mass structures in distant galaxies, I was excited. ” in Japan, Said in a statement.. “The quality of the ALMA data was so good that I could see as much detail as I thought it was a nearby galaxy.”
Image blur is actually the result of being captured using radio radiation from. carbon According to researchers, ions (carbon atoms with some electrons removed) are in the galaxy instead of visible light and are difficult to detect accurately from such distant galaxies. As a result, there may be more galaxies that we cannot see.
“BRI1335-0417 is a very distant object, so this observation may not show the true edge of the galaxy,” Tsukui said in a statement. “BRI1335-0417 was a giant for the galaxies that existed in the early universe.”
It’s also incredibly dense.Researchers believe that despite its much smaller size, it retained the same amount of mass as the Milky Way, and its swirl arm was probably a hotspot. Star Formation. According to researchers, galaxies could be very dense because they were formed from violent collisions between two small galaxies.
The ultimate fate of the BRI 1335-0417 may also provide some exciting clues as to what will ultimately happen to spiral galaxies.Astronomers believed that swirls were a precursor to it Elliptical galaxyHowever, according to researchers, how this change happens is still a mystery.
Spiral galaxies make up about 72% of the galaxies observable in space. According to a 2010 Hubble Space Telescope survey.. According to researchers, a better understanding of them, and how they are formed and evolved, will help us learn more about our own galaxies.
“our Solar system It is located in one of the spiral arms of the Milky Way galaxy, “said Satoru Iguchi Observatory of the Graduate University for Advanced Studies in a statement. “By tracing the roots of the spiral structure, the environment in which the solar system was born. I hope that this research will further deepen our understanding of the history of galaxy formation.”
This study was published online in the journal on May 20th. Science..
Originally published in Live Science.
The oldest spiral galaxy in the universe captured in fuzzy photographs
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