Space galaxies found in ancient 'treasure trove' find by astronomers
11 Août, 2019, 01:07 | Auteur: Therese Cote
"The greater density of stars means there would be many more stars close by appearing larger and brighter", lead researcher Tao Wang, an astronomer at the University of Tokyo, the French Alternative Energies and Atomic Energy Commission, and the National Astronomical Observatory of Japan, said in a statement.
Astronomers uncover 39 ancient galaxies using multiple space and ground-based observatories, according to CNN.
It is the first multiple discovery of this type of galaxy, which defies current models of the universe, the researchers said. The amount of stretching allows astronomers to calculate how far away something is, which also tells you how long ago the light you're seeing was emitted from the thing in question.
The reason these galaxies were hidden from sight is that, while they were actively making stars, they also contained plenty of dust, which tends to block and obscure much of a galaxy's light. Previous studies have tracked down the existence of some massive galaxies which are not visible in ultraviolet light, but majority have been classified as extreme starburst galaxies, and it is inferred that they are unlikely to represent most of the massive galaxies.
"It was tough to convince our peers these galaxies were as old as we suspected them to be".
But how can something as big as a galaxy be invisible to begin with? But ALMA has sharp eyes and revealed details at submillimeter wavelengths, the best wavelength to peer through dust present in the early universe. The bigger the galaxy, the bigger the supermassive black hole at its center.
Royals-Red Sox tied in 10th, suspended due to rain
Boston Red Sox starting pitcher Andrew Cashner (48) pitches during the first inning against the Kansas City Royals at Fenway Park. Cashner has given up at least six runs in three of his five starts after he was acquired from the Orioles in mid-July.
Samsung dévoile le Note 10 | ICI
Si la croissance de Samsung concerne surtout des modèles d'entrée et de milieu de gamme, le Note 10 fait partie des produits les plus chers proposés par le fabricant informatique.
Liverpool débute fort contre Norwich — Premier League
Après une lourde défaite (1-4) face à Atalanta, a terminé sa pré-saison avec une courte victoire (1-0) face à Toulouse. Face à Norwich, le joueur de 27 ans pourrait rentrer dans l'histoire de la Premier League .
The study published in the Nature journal sets out that the galaxies are also intimately connected with supermassive black holes and the distribution of dark matter. "Even so, it took further data from the imaginatively named Very Large Telescope in Chile to really prove we were seeing ancient massive galaxies where none had been seen before".
"Residing in the most massive dark matter haloes at their redshifts, they are probably the progenitors of the largest present-day galaxies in massive groups and clusters", the team write.
'Theoretical researchers will need to update their theories now, ' said Prof Kohno.
Looking up at the night sky, our galaxy the Milky Way appears a bit like spilled milk.
'But conversely, the large amount of dust means farther-away stars would be far less visible, so the background to these bright close stars might be a vast dark void'.
"These gargantuan galaxies are invisible in optical wavelengths so it's extremely hard to do spectroscopy, a way to investigate stellar populations and chemical composition of galaxies".
The invention of such massive, star-forming galaxies when the universe was lower than 2 billion years outdated matches nicely with previous observations of huge, quiescent galaxies later in cosmic historical past.
In his comments this week, Trump expressed sympathy for the Blagojevich daughters and admiration for Patti. President Donald Trump's statement that he was considering commuting the sentence of the ex-governor.
The technology further compares this data to faces in the company's database of user face templates to check for matches. The appeals panel decided that Facebook's technology "invades an individual's private affairs and concrete interests".
More than a million people were evacuated from their homes ahead of the storm, the official Xinhua news agency reported. Almost 200 trains through the city of Jinan in Shandong province were also suspended until Monday, Xinhua reported.
Pakistan says it is considering a proposal to approach the International Court of Justice over India's action. Pakistan said cluster munitions were fired in violation of global treaties and humanitarian law.
The " shooting incident " occurred on Saturday afternoon at the al-Noor Islamic Centre, local police confirmed. He was overpowered by members of the mosque before police arrived, the mosque director said.
Health officials earlier warned the dengue epidemic will peak in October with an estimated 10,000 cases a week. Avelino explained that October is the month when eggs of the Aedes aegypti mosquito are hatched.
Erasmus knows all too well, though, that the Boks face an incredibly hard assignment in Salta. There are, however, a couple of positions where some uncertainty remains.
Oh, Canada! Teenager Bianca Andreescu makes Rogers Cup final
Now it could be her turn, as she awaits the victor of Williams' match Saturday night against 21-year old qualifier Maria Bouzkova. She had three chances to finish the match before the second set went to a tiebreaker, but Kenin fought back every time.
Hong Kong paralysée par une grève générale
Cette déclaration marque une nouvelle étape dans les tensions entre la Chine et sa région semi-autonome. Au moins 105 vols étaient indiqués comme supprimés sur la liste des départs de l'aéroport de Hong Kong.
Un coup de neuf pour "Les 12 coups de midi"
Fan de l'émission, Edwige s'est si bien entendue avec Paul que celui-ci l'a invitée à venir dans Les 12 coups de midi . Les jours se suivent et se ressemblent pour Paul sur le plateau des 12 coups de midi .
Years Later, A Vietnam MIA/KIA Returns Home
ABC News affiliate WFAA-TV in Dallas , Texas, said a funeral service with full military honors was scheduled for Saturday. The colonel was later declared missing in action after he was shot down over Laos in 1967.
Immigration raids to have long-term effects on poultry towns
Federal authorities apparently had a good reason for conducting one of the biggest immigration raids in a decade this past week. According to The Washington Post , ICE has around 54,000 people detained in facilities only designed for 42,000.
La mythique photo des Beatles sur Abbey Road a 50 ans
Ils voyaient aussi des messages cachés dans le fait qu'il marche pieds nus et d'un autre pas que les autres membres du groupe. Ce dernier est également filmé par une caméra; les images sont diffusées en temps réel sur le site Internet des studios.