This ancient dwarf star has oxygen from the Milky Way’s earliest supernovae
Artistic image of the supernova explosions of the first massive stars that formed in the Milky Way. coque samsung s8 plus avec photo kawaii The star j0815+4729 was formed from the material ejected by these first supernovae. Gabriel Prez, SMM (IAC)
Astronomers coque samsung j6 plus psg studying one of the oldest known stars have found it has auchan coque samsung galaxy core prime an unexpectedly high level of oxygen in coque samsung galaxy s amazon its atmosphere. This suggests that oxygen was produced in the very earliest supernovae in our universe.
The star in question, J0815+4729, is over 5,000 light years away in the constellation of Lynx. It is of a coque samsung galaxy grand prime vampire diaries type called a coque samsung galaxy s5 i9600 halo star, and it is so old that observing it is like looking back in time. “This is due to coque samsung j3 dorée their roughly spherical aliexpress coque samsung galaxy s3 distribution around the Milky Way, as opposed to the more familiar flat disk of younger stars that include the sun.”
The researchers used theW. M. Keck Observatory to observe the star coque samsung galxy s6 and found that coque samsung galaxy note 4 strass it has an coque samsung galaxy j5 2016 etanche unusual chemical composition with relatively high amounts of carbon, nitrogen, and oxygen, but very low amounts of calcium and iron. Compared to our sun, J0815+4729 has only one millionth the amount of these heavier elements.
This is because ancient halo coque samsung a8 2018 poisson stars were formed before later supernovae explosions spread heavy elements coque a8 samsung pizza coque samsung galaxy a3 mnms like iron throughout the galaxy.
Even by the standards of halo stars, J0815+4729 is an outlier.
This finding helps astronomers to understand how oxygen was produced at the dawn of the universe. “This result is very coque samsung a3 2017 foot exciting,” Keck Observatory Chief coque samsung j3 queen Scientist John O’Meara said. coque samsung s8 chez orange “It tells us about some of the coque samsung basketball earliest a8 2018 samsung coque anti choque times in the universe by using stars in our cosmic back yard. I look forward to seeing more measurements like this one so we can better understand the coque samsung galaxy s2 doré earliest seeding of oxygen and other elements throughout the young universe.”
The findings coque a8 2018 samsung porte feuille are published in The Astrophysical Journal Letters.
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