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The clarification shows a large galaxy, tearing a smaller galaxy, regardless of withdrawing the stars away from them. | Credit: Robert Lea (created with Kanfa)
Two dwarf galaxies are waging war near our path of Milky Way and it appears that there is only one victorious.
Using tips from stars tracking Gaya spacecraftScientists examined huge stars movements in Small magnetic cloud (SMC) to find that it is torn as the attractive effect of his larger counterpart, Great Magical Cloud (LMC).
The results are spent on SMC, indicating that it may be completely destroyed in the end through this reaction. However, the loss of SMC is the profit of astronomers, where this event can teach us more about it The development of the galaxy.
“When we got this result for the first time, we were suspected that there would be an error in our analysis. However, when carefully examined, there is no debate in the results, and we were surprised.” He said in a statement. “The SMC stars were moving in two opposite directions on both sides of the galaxy, as if they were dismantled.
“Some of these stars approach LMC, while others are away from it, indicating the attractive effect of the larger galaxies. This unexpected movement supports the hypothesis that SMC is disrupted by LMC, which leads to its gradual destruction.”
Is the small Magilani cloud governed?
Thanks to Near SMC To our galaxy, Tashara and his colleagues managed to identify and follow about 700 huge stars in the dwarf galaxy.
These stars, which include more than eight times the mass of the sun, are burning through nuclear fuel supplies more quickly than the smaller stars. This means that they have a much shorter life. while Sun Hydrogen is expected to burn in “The main sequenceLife around her 10 billion yearsHuge stars can deplete nuclear fuel in just a few million. After their fuel supplies were exhausted, the stars erupted in Supernova explosions, leaving behind them Neutron stars or Black holes.
Smc huge stars ’speeds. Red stocks are stars moving towards LMC, which are located at the bottom of the left. Blue stocks are stars in SMC moved away from LMC | Credit: Satoya Nakano
In addition to the discovery of stars moving in two directions opposite on different aspects of SMC, the team also found that the stars in this Dwarf It lacks the rotational movement. This is surprising because the huge stars were born from clouds of gas collapse between the stars, which, as we saw in the Milky Way, revolve. In addition, the huge stars usually participate in this rotational movement when they are young, because they have not yet “separated” themselves Before giving birth.
This deficiency in SMC stars hints that Gas among stars In the dwarf galaxy, it may not rotate either. This can have effects on how SMC design and its interactions with LMC and milky way.
“If SMC is not already alternating, the previous estimates may need her bloc and the date of her interaction with Milky Way and LMC to a review,” said Satoya Nakano, the co -captain of the team, in the statement. “This can change our understanding of the date of the interaction between the three body between the majestic clouds and the method of the Milky Way.”
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New results can help scientists better understand dynamic reactions between galaxies in general. SMC and LMC share many characteristics with primitive galaxies in the early universe, such as the scarcity of elements heavier than hydrogen and helium, this research can also help understand how Galaxies interactions in the early universe The shape of the universe as we see it today.
“We cannot get a” view “of the birds of the galaxy in which we live.” As a result, SMC and LMC are the only galaxies in which we can monitor the details of the stellar movement.
“This research is important because it allows us to study the process of forming stars with regard to the movement of stars throughout the galaxy.”
The team’s research was published on Thursday (April 10) in Astronomical Journal Supplements Series.
