Milky Way swallowed galaxy 10 billion years ago and cannibalised stars
23 Juillet, 2019, 13:36 | Auteur: Therese Cote
For instance, Andromeda has "cannibalized" a nearby galaxy and this happened about 2 billion years ago.
After studying their movement and composition, the team determined that both sets of stars were equally old, but the bluer ones had been set into a "chaotic motion" - evidence of the Milky Way swallowing a smaller galaxy in the distant recesses of time. However the exact chain of the events which produced the Milky Way was not known until now.
High-precision measurements of the position, brightness and distance of around a million stars within 6,500 light years of the sun, obtained by the Gaia space telescope operated by the European Space Agency, helped pinpoint stars present before the merger and those that formed afterward.
The publication explains that the galaxy is fixed in space.
Previous research, published in Nature in 2018, found evidence that a huge population of stars within the halo region of the Milky Way were moving in a different direction to the rest of the galaxy's billions of stars. However, when the collision occurred, until that time, no could not say.
Gallart's team built on that research, determining accurate ages for hundreds of thousands of stars in the halo and the disk. This wouldn't be the first time our galaxy is involved in a galactic merger.
Engadget notes that "The researchers believe Gaia-Enceladus collided with the young Milky Way about 10 billion years ago, and over the course of millions of years, the Milky Way consumed the dwarf galaxy".
Dolphins Waive Kendrick Norton After Crash, Will Pay Him
Despite the loss of his job with the Dolphins, the National Football League has agreed to pay the player's medical costs. He suddenly pulled his F-250 truck in front of a Maserati and clipped it, sending his vehicle into a concrete barrier.
Kim inspects new submarine, wants NKorean military bolstered
Again there's no nuclear testing, there's no missile testing, there's no nothing. "I think we will, yeah, at a certain point". Trump's top diplomat has also expressed hope that the regime will take a different approach when they finally sit down again.
After all, their own stars in the milky way are in the same area from the very beginning of its formation to 13.5 billion years ago. The energy of the collision caused stars in the Milky Way to be flung out into the galactic halo.
Smaller galaxies merge to create bigger ones, and form and evolve hierarchically.
'Here we show that the stars in both halo sequences share identical age distributions, and are older than most of the thick-disk stars.
They found that numerous stars in the inner halo are up to 10 billion years old, providing more evidence of the timing of the merger-and helping identify the Milky Way's original stars that were there at its onset, 13.5 billion years ago.
The next step for the astronomers is to extend the timeframes even further which should provide an even more accurate determination of how the Milky Way's disk came to be.
"The novelty of our work is that we have been able to assign precise ages to the stars that belong to the galaxies that merged and, by knowing these ages, when the merger took place", Carme Gallart, lead author of the study published in Nature Astronomy, told AFP.
According to Telegraph Sport, Spurs are ready to pay £25m for the 19-year-old after making a breakthrough in talks. Sessegnon was widely praised for his role in Fulham's promotion-winning campaign in 2017/2018.
After laughing it off, Nikolaj expanded on his feelings, even directly addressing that online petition asking for a remake . Game of Thrones Season 8 still has fans mad, and one of those fans seems to be the coolest guy in Hollywood - Seth Rogen .
He has shown no reticence in criticising Johnson, his former boss at the Foreign Office, once describing him as a "circus act". Johnson has vowed to take Britain out of the European Union on October 31, with or without a divorce deal.
She does, however, have two other men's names tattooed on her back and wrist, though her connection to each is unclear. The couple, who Wednesday in 2017, recently celebrated their daughter, Kulture's first birthday .
The group, which once opened for the Rolling Stones, was best known for songs like " Cissy Strut " and " Sophisticated Cissy ". "It was peaceful", Kent Sorrell, Neville's longtime manager, told the New Orleans Times-Picayune .
Lo and behold, police allege the officer found several boxes in the van which contained "bags of a crystalline substance". The driver was refused bail and he faces three charges in total, which include not giving particulars to police.
Rosselló addressed the nation from his residence in San Juan following a meeting with members of his cabinet on Sunday afternoon. Monday was the 10th consecutive day of protests , and more are being called for later in the week.
If that landing is successful, India will become only the fourth nation to ever land an intact vehicle on the moon. The spacecraft has successfully entered the earth's orbit, the Indian Space Research Organisation (ISRO ) said.
Born in China and raised in Florida, the American immigrant, 20, was disgraced and stripped of her Miss Michigan title . The other tweet considered offensive by pageant officials was related to a comment regarding black-on-black crime.
'The Lion King' Sets Box Office Record For Disney
Offering stunning visuals and mind-blowing animated effects, " The Lion King " succeeds as a pure work of technical progress. James Earl Jones reprises his role from the 1994 animated classic as Mufasa, while Chiwetel Ejiofor voices Scar.
Halliburton profit beats as company cuts cost; shares surge
Halliburton shares have decreased 18% since the beginning of the year, while the Standard & Poor's 500 index has risen 19%. It has also taken steps to cut costs by reorganizing its North American business, including the above-announced job cuts.
China's sci-tech innovation board starts trading
Modelled after Nasdaq, and complete with a US-style IPO system, STAR may be China's boldest attempt at capital market reforms yet. Alibaba is reportedly considering a second listing in Hong Kong , following its record $25 billion flotation in NY in 2014.
Fekir rejoint le Bétis Séville (officiel) — OL
Cependant, Fekir a compris que San Siro n'était pas l'endroit idéal pour se revaloriser et continuer à se développer. Il ne part pas seul à Séville puisque son petit frère Yassin fait le voyage avec lui.
Government now approves Janssen's Prostate Cancer drug
Prostate Stent forecast information is provided for every product type , application and research regions from 2018-2023. A detailed information on the geographical presence of Prostate Stent Industry is explained in this study.
Hudson, Red Sox, Sogard, Pompey — Blue Jays Notes
The New York Mets are considering trading right-handers Zack Wheeler and Noah Syndergaard before the July 31 deadline. Acquiring a closer would be a curious move considering the Sox' plan to use Nathan Eovaldi as the full-time closer.