The Most Primitive Star-Forming Galaxy Ever Found

In summary, a newly discovered galaxy 620 million light-years away in the constellation Lynx has the lowest oxygen abundance ever seen in a star-forming galaxy. This galaxy has recently started producing stars and 80% of them were formed in the past few million years. The galaxy's young, hot stars emit radiation similar to that which reionised the universe after the big bang, making it a valuable tool for studying the early universe. However, drawing conclusions from just one galaxy carries some risks.
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Lying 620 million light-years away, this galaxy has the lowest oxygen abundance ever seen in a star-forming galaxy.

Link: New Scientist
 
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Interesting! From the article:

"A small galaxy in the constellation Lynx that only recently started making stars has the lowest level of oxygen ever seen in a star-forming galaxy. That makes it the best place yet to probe the chemical elements cooked up by the big bang."
and
"the newly found galaxy spawned 80 per cent of its stars in just the past few million years. The hottest of these stars emit the same kind of blistering radiation that reionised the universe shortly after the big bang. The galaxy serves as a surrogate for the galaxies we can’t yet see that transformed the entire cosmos some 13 billion years ago."

I think that's an important observational discovery.
 
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Stavros Kiri said:
I think that's an important observational discovery.
Although, extrapolating from a sample size of one carries with it risks.
 
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1. What is the significance of finding the most primitive star-forming galaxy?

The discovery of the most primitive star-forming galaxy is significant because it provides insight into the early stages of galaxy formation and the processes that led to the creation of the first stars in the universe. This can help us better understand the evolution of galaxies and the universe as a whole.

2. How was this galaxy identified as the most primitive star-forming galaxy?

This galaxy was identified through observations using the Atacama Large Millimeter/submillimeter Array (ALMA) telescope. The galaxy was found to have a high abundance of heavy elements, which is a key indicator of its primitive nature.

3. How old is this primitive star-forming galaxy?

Based on its distance from Earth and the current rate of expansion of the universe, scientists estimate that this galaxy existed around 500 million years after the Big Bang, making it one of the oldest and most distant galaxies ever observed.

4. What role did ALMA play in the discovery of this galaxy?

ALMA played a crucial role in the discovery of this galaxy by allowing scientists to observe the galaxy's high levels of heavy elements, which would have been impossible to detect with previous telescopes. ALMA's high sensitivity and resolution also provided detailed images of the galaxy's structure and star formation activity.

5. What can we learn from studying the most primitive star-forming galaxy?

Studying this galaxy can provide valuable insights into the early stages of galaxy formation and the conditions that existed in the universe during that time. It can also help us understand the processes that led to the creation of the first stars and how they evolved over time. This information can contribute to our understanding of the origins of the universe and the formation of galaxies like our own.

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