The first map of the galaxy in the world was completed … Heavy Stars, Galaxy Evolution of Mystery



Part of our galaxy revealed by NASA on January 10, 2012. This is a mosaic of NASA's Wide Area Infrared Radiation Surveyor. The Cassiopeia and Kepesus configurations are also observable. [EPA=연합뉴스]

Part of our galaxy revealed by NASA on January 10, 2012. This is a mosaic of NASA's Wide Area Infrared Radiation Surveyor. The Cassiopeia and Kepesus configurations are also observable. [EPA=연합뉴스]

The northern sky is a funny legend. More than 30 degrees north is the story of the five-dimensional constellation that moves during the year, "Kepesus".

Kepesus is the king of ancient Ethiopia (Aethiopia) in Greek mythology. During my vanity of Cassiopeia I have suffered a lot of suffering. Cassiopeia, whose daughter boasted her daughter, said, "The beauty of my daughter Andromeda is better than the sum of 50 daughters of the water nymph," and the rage of the sea god Poseidon was bought. When Poseidon sent a monster to direct Ethiopia to extermination, Kepesus had to sacrifice his daughter. Fortunately, Andromeda, which has almost become a monster meal, saved Medusa and saved the hero of Perseus and became his wife.

NASA's Star Nebula, Hubble Space Telescope's 26th Anniversary Birth, Umbilicus is in the constellation Cassiopeia, 8000 light years from Earth, and the huge gas and dust cloud illuminates the light of the stars inside the nebula. [사진 미항공우주국(NASA)]

NASA's Star Nebula, Hubble Space Telescope's 26th Anniversary Birth, Umbilicus is in the constellation Cassiopeia, 8000 light years from Earth, and the huge gas and dust cloud illuminates the light of the stars inside the nebula. [사진 미항공우주국(NASA)]

But Poseidon's wrath does not stop here, and eventually Cassiopeia hangs upside down to become a constellation and continues around the North Pole. Even today, in the northern sky, Cassiopeia, his husband Kepesus, the daughter of Andromeda, the proverbial Perseus and the monster whales are conspicuous.

Space Star Cradle of Kepes … A heavy star might be the secret of evolution of galaxies

But it was not just a legend that kept the brush instead. The Royal Astronomical and Space Institute (KAIST) announced on March 13 that it had recently discovered the cradle of a star formation hidden in the Kepes area as a multi-purpose infrared imaging system (MIRIS) developed in 2013. It was the first observation that there are 66 young stars in the Keepeus stars) less than 10 million years old, corresponding to the young age of the universe.

The supernova explosion of graphics provided by the European Southern Observatory in 2014. A massive star whose weight is more than 15 times the sun has a relatively large impact on the entire galaxy due to supernova explosions. For this reason, it can be a clue to studying the evolution of galaxies. [사진 유럽남방천문대]

The supernova explosion of graphics provided by the European Southern Observatory in 2014. A massive star whose weight is more than 15 times the sun has a relatively large impact on the entire galaxy due to supernova explosions. For this reason, it can be a clue to studying the evolution of galaxies. [사진 유럽남방천문대]

Finding the place where the star is born is a mystery in itself, but what does science mean? "This discovery helps explain the process of evolution of the galaxy," explains Kim Il-jung, senior researcher at Astronomical Astronomy Observatory of Astronomy. Especially the stars we find are meaningful because they are a "massive star" that is massive, more than 15 times the weight of the sun.

Heavy stars are born and dying with this mass and have a big impact on the galaxy as a whole. The most striking is the supernova explosion. Heavy stars decorate the end of the energies that the sun releases for 10 billion years. It's a supernova. The star's core closes and becomes a very small neutron star or black hole. Heavy stars return oxygen, silicon and iron into the universe that has accumulated throughout this lifetime. Kim Il-jung, a researcher, said: "A dense star has a great influence on the galaxy itself through this process, so observation of these stars is a good trace to see how our galaxy has changed chemically and morphologically."

Our MIRIS eyes from the sky 600 km above the ground … The first mapping of galaxies in the world

The Korean Institute of Astronomy and Space (MIRIS) developed Korea's first multi-purpose Infrared Ray Observation System (MIRIS) telescope in Korea. It is said to be advantageous to watch the universe from a low orbit about 600 km above ground and observe a wider range than Hubble's telescope. [사진 한국천문연구원]

The Korean Institute of Astronomy and Space (MIRIS) developed Korea's first multi-purpose Infrared Ray Observation System (MIRIS) telescope in Korea. It is said to be advantageous to watch the universe from a low orbit about 600 km above ground and observe a wider range than Hubble's telescope. [사진 한국천문연구원]

The MIRIS telescope, launched in November, November 3, has played a big part in revealing the mystery of Kepes. Telescopic telescope Isaac Newton, who was watching the galaxy on the ground, looked into the invisible area. Using this technique, he was able to create an accurate map of our galaxy using the "Paschena alpha", the world's first hydrogen-emitted spectrum, from the observation of the heavy star in Kepesus.

A Galaxy Precision map using Paschena Alpha, the first of its kind in the world, will be complemented by Korean researchers. The squares in the top right corner indicate the area of ​​the kefe and the red light indicates that a strong paschen alpha is released. [사진 한국천문연구원]

A Galaxy Precision map using Paschena Alpha, the first of its kind in the world, will be complemented by Korean researchers. The squares in the top right corner indicate the area of ​​the kefe and the red light indicates that a strong paschen alpha is released. [사진 한국천문연구원]

Dr. Jung Woong-seop, who participated in research, said: "Newton binoculars use H-alpha, which is a relatively short wavelength between hydrogen spectra, but because of" interstellar extinction, "in which wavelengths are absorbed or scattered by various substances in the universe There was a limit, "he explained. However, MIRIS gained a more accurate picture by observing the longer wavelength "Paschen Alpha" in the universe rather than on the ground. The younger stars are formed in large, dense clouds called "ionospheric zones" that use the hydrogen spectrum from these observations.

MIRIS is known to be able to observe the entire galaxy because it can observe a wider area than NASA's Hubble Space Telescope observing the universe at similar altitudes. Scientists plan to find other areas of ionizing hydrogen in the future, expanding to the entire area. The results of the study were published in the Astrophysical Journal Supplement Series, the International Office of Astronomy.

Reporter Huh Jung Won [email protected]


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