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For the first time, astronomers are being viewed as the 'death' of the galaxy

 For the first time, astronomers are being viewed as the 'death' of the galaxy.

Death of galaxy

The research team accidentally detects the galaxy that is dying nine billion light years away using the ALMA, or Atacama Large Millimeter / Submillimeter Array Telescope.

Astronomers have observed many 'dead' galaxies but the process of death has never been seen before - until now.

Using the telescope (ALMA), astronomers observed a galaxy nine billion light years away from Earth, forming nearly half of its star gas and losing fuel.

When the stars stop forming inside them or they start losing the material that makes up the stars, the galaxies 'die'.

The ID2299 galaxy is currently rejecting about 10,000 suns of material each year as cold gas ejections. It is estimated that the galaxy currently contains 46% of the total cold gas.

The galaxy is still rapidly forming new stars, but since it is also running out of fuel quickly, the remaining gas will be consumed and the galaxy is likely to be dead within a few million years.

"This is the first time we have seen a specific giant star-forming galaxy in the distant universe 'die'," said Anagrazia Puglisi, lead researcher at Durham University and the UK's new study. Saclay Nuclear Research Center (CEA-Saclay), France, in a statement.

The researchers behind the findings believe that the ID2299 galaxy is rejecting the monumental amount of cold gas due to the collision between the two gases, which eventually merged as ID2299.

Calliding galaxies can be identified by their gal 'tidal tails' - long currents of gases and stars in interstellar space behind galaxies.

These tails are difficult to see in distant galaxies but since the researchers caught the luminous feature, as it was launching into space, they were able to recognize that gas rejection was a part of the trail.

It was previously believed that black hole activity, as well as the winds caused by stars, drove the gases out of the galaxies.

"Our study suggests that the mergers can produce gas evictions and that the winds and tidal tails can look very similar," said CEA-Saclay co-author Emanuel Daddi in the statement.

Daddi believes that retrospective analysis of captured gas evictions can confirm that some of them are actually tidal tails.

"This can help us modify our understanding of how galaxies die", he said.

The discovery was a serious accident and occurred when the team was monitoring data from a galaxy survey conducted by ALMA to study the properties of cold gas in distant galaxies.





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