Weird stellar remnant may be from one of the first stars in the universe -
Oct 22, 2021 1 min, 43 secs
"AS0039 has such an unusual chemical composition that it enables us to probe the nature of the first stars and, in particular, their stellar mass," study co-author Mike Irwin, an astronomer at the University of Cambridge in England, told Live Science. .

Population I stars, like the sun and most other stars in the observable universe, have high metal content, especially iron, and are rich in relatively heavy elements, like calcium and magnesium.

Population II stars, such as AS0039, are much rarer; these metal-poor stars contain only trace amounts of heavy elements.

Although Population III stars have never been detected, astronomers know that the very first stars born in the universe would have been Population III stars, Irwin said.

As a result, all the stars observed today are Population I or II stars, because they formed from the leftovers of the stars that came before them.

However, the first stars in the universe, Population III stars, formed from pure hydrogen, which was the first element created after the Big Bang, Irwin said.

"Population III stars are defined to be the first generation of stars to have formed in the universe and hence were formed from zero metallicity.".

These findings suggest that AS0039 may be a second-generation star that formed out of the remains of a Population III star.

Computer simulations suggested the Population III star that birthed AS0039 likely died in a powerful hypernova explosion.

"We believe that Population III stars were generally more massive than stars that we see today, so it would not be surprising if a Population III star ended up as a hypernova," Irwin said.

The researchers hope the discovery of AS0039 will help astronomers locate more second-generation metal-poor Population II stars, which would, in turn, shed light on the size and distribution of the Population III stars and the role they played in turning the early hydrogen-filled universe into the one we see today.

"AS0039 shows that it is possible to learn about the properties of Population III stars and signposts the way to finding more examples," Irwin said

1. Grimes May Be Throwing Some Shade At Elon Musk In Her New Song "Player Of Games" - BuzzFeed
Dec 07, 2021 # entertainment 3 secs
2. MLB owners lock out players in first work stoppage since 1995 - The Guardian
Dec 02, 2021 # politics 54 secs
3. Steven Spielberg hailed for bold 'West Side Story' decision | TheHill - The Hill
Dec 02, 2021 # politics 46 secs
4. 'There's no one way to be Latina': Rachel Zegler does stardom her way with 'West Side Story' - USA TODAY
Dec 07, 2021 # entertainment 1 min, 24 secs
5. National Board of Review Names ‘Licorice Pizza’ as Best Film of 2021 - Hollywood Reporter
Dec 02, 2021 # entertainment 55 secs
6. First Confirmed Case Of COVID-19 Omicron Variant Reported In Philadelphia - CBS Philly
Dec 04, 2021 # politics 51 secs
7. The BMW M4 GT4 is racing perfection made accessible - CNET
Dec 08, 2021 # technology 1 min, 21 secs
8. The brightest comet of the year, Leonard, is approaching Earth. Here's how to see it. - USA TODAY
Dec 02, 2021 # science 49 secs
9. Analysis: The vast majority of Republicans don't want a booster
Dec 02, 2021 # breaking 41 secs
10. Google Planning 'Pixel Watch' for a 2022 Launch Under Code Name 'Rohan' - Business Insider
Dec 02, 2021 # technology 2 secs
11. HEALTH NOTES: Robot 'fish' could be used to deliver chemotherapy drugs directly into tumours - Daily Mail
Dec 04, 2021 # health 1 min, 0 secs
12. Canadian police find a new use for AirTags that Apple will never promote - PhoneArena
Dec 04, 2021 # technology 15 secs
13. Are you in the pre-diabetes stage? Know the blood sugar range and symptoms - Times Now
Dec 07, 2021 # health 34 secs
14. Extraordinary fossils of herd of 11 dinosaurs unearthed in Italy | TheHill - The Hill
Dec 03, 2021 # science 53 secs
15. Ubisoft delists its NFT announcement as YouTube dislikes top 22,000 - Video Games Chronicle
Dec 08, 2021 # technology 36 secs
16. Experts fear a bad flu season on top of COVID - Axios
Dec 08, 2021 # health 35 secs


Get monthly updates and free resources.


© Copyright 2021 365NEWSX - All RIGHTS RESERVED