Sentences with phrase «how earlier galaxies»
The find — made by the Atacama Large Millimeter / submillimeter Array (ALMA)-- could help astronomers understand how early galaxies grew into the ones we observe today.
http://www.sciencemag.org/
A local galaxy is leaking enough ultraviolet light to ionize surrounding hydrogen, which could explain how the earliest galaxies transformed the universe.
Not exact matches
Decades earlier, cosmologists looking at Einstein's equations determined three possible destinies lying in wait for the universe, depending on how much stuff — galaxies, stars, humans — it contained.
«Every confirmation adds another piece to the puzzle of how the first generations of galaxies formed in the early universe,» said Pieter van Dokkum, the Sol Goldman Family Professor of Astronomy and chair of Yale's Department of Astronomy, who is second author of the study.
These new results, however, contradict current models of how galaxies evolved in the early Universe, which do not predict any monster galaxies at these early times.
Because they grew up in relative isolation, the lonely galaxies within voids are a perfect test case for astronomers curious about how galaxies change over time, and what the earliest, primordial galaxies were like.
«This new insight may force us to rethink the whole cosmological context of how galaxies burn out early on and evolve into local elliptical - shaped galaxies,» said study leader Sune Toft of the Dark Cosmology Center at the Niels Bohr Institute, University of Copenhagen, Denmark.
This close - up view should help astronomers understand how collisions, which were once far more common than they are now, influenced star formation and the evolution of galaxies in the early universe.
Finding such a galaxy early in the history of the universe challenges the current understanding of how massive galaxies form and evolve, say researchers.
But how did the earliest galaxies grow when there weren't nearly as many stars to swallow?
A new study led by University of California, Riverside astronomers casts light on how young, hot stars ionize oxygen in the early universe and the effects on the evolution of galaxies through time.
New observations show that tiny galaxies in the early universe could have triggered the epoch of reionization — a period when harsh radiation tore apart hydrogen atoms — which astronomers consider key to understanding how stars and galaxies arose from the universe's early dark void.
«How can a quasar so luminous, and a black hole so massive, form so early in the history of the universe, at an era soon after the earliest stars and galaxies have just emerged?»
«Knowing more about the black holes powering quasars will allow us to know more about how galaxies develop,» said Marta Volonteri, the research director at the Observatory of Paris and the principal investigator of the BLACK project, which investigates how supermassive black holes influenced their host galaxies, especially as quasars, in the early universe.
Several ground - based microwave telescopes, such as the South Pole Telescope, are tracking how the structure of very distant galaxy clusters grew in the early Universe under the influence of gravity.
The quasar dates from a time close to the end of an important cosmic event that astronomers referred to as the «epoch of reionization»: the cosmic dawn when light from the earliest generations of galaxies and quasars is thought to have ended the «cosmic dark ages» and transformed the universe into how we see it today.
Today's supercomputers already crudely model the early universe, simulating how infant galaxies grew and changed.
«We'll learn more about the early history of galaxies and how the cosmos got its shape, so to speak,» he said.
According to the standard cosmological model, which predicts how the universe has grown and changed since its earliest days, the universe is filled with enormous strands of dark matter, and the galaxies are embedded in this so - called cosmic web.
But if detected, they can offer valuable insights to how the first galaxies formed some 13 billion years ago, and therefore to the evolution of the early universe.
The dwarf galaxy also is of interest because it provides clues to how the early simple universe became re-ionized by early star formation, moving it from the so - called cosmic Dark Ages of neutral gases to the development of the complexly structured universe now in existence, where the gas between galaxies is ionized.
A still - growing core of a galaxy in the early universe may help astronomers understand how massive elliptical galaxies get their start.
Now the researchers hope that future observations of a large number of distant galaxies using the ALMA telescopes could help unravel how frequently such evolved galaxies occur in this very early epoch of the history of the universe.
The discovery solves a riddle in understanding how giant elliptical galaxies developed quickly in the early universe and why they stopped producing stars soon after.
«The discovery of massive, evolved galaxies at much greater distances than expected — and hence at earlier times in the history of the Universe — is a challenge to our understanding of how galaxies form.»
In this talk, UC Berkeley's Dr. Mariska Kriek will present recent studies of galaxies in the Early Universe, and discuss our current view of how different types of galaxies may have formed and evolved over cosmic time.
This sample is now providing the best measurement yet of when and how fast galaxy clusters stop forming stars in the early Universe.
Its ability to detect planets on the other side of the galaxy has revamped our understanding of how solar systems form, which types of stars tend to pair with which types of planets, and shed light on the early dynamics of solar system formation.
«By determining just how distant these radio galaxies are, we will learn how early the black holes formed in the history of the Universe,» he added.
But contained within these dead stars, called white dwarfs, is the early history of our galaxy, providing clues on how it came to be.
Such studies are important in understanding how the Universe evolved from an early dark period to one when galaxies began to shine.
«Every confirmation adds another piece to the puzzle of how the first generations of galaxies formed in the early universe,» said Pieter van Dokkum of the Yale University, second author of the study.
«Since First Light 20 years ago, Art Wolfe made fundamental discoveries about cosmology and the early universe using Keck Observatory's telescopes and instruments, which led to important understandings about how elements, stars and galaxies form,» said Keck Observatory Director, Taft Armandroff.
«Future work involving this galaxy — as well as others like it that we hope to find — will allow us to study the universe's earliest objects and how the Dark Ages ended.»
As well as keeping an eye out for solar flares, it will also be looking well past the Sun to gain a better grasp of the earliest, most distant galaxies we have ever observed to give astronomers a better idea of what happened in the very early days of our Universe, and perhaps shed light on how the relationship between gravity and dark matter evolved.
By studying different models of just how mass is positioned in the galaxy cluster, astronomers could predict one more light path for Refsdal, one that would delay the light reaching the telescope until late 2015 or early 2016.
How did our home planet, the Milky Way, and the multitude of other galaxies that surround us, evolve from that early state of the Universe to today?
How did the first supermassive black holes grow alongside their host galaxies in the early universe?
Dr. Abel takes us on an illustrated journey through the early stages of the universe, using the latest computer animations of how the first (massive) stars formed and died, and how stars built up the first galaxies.
The amount of oxygen in a galaxy is determined primarily by three factors: how much oxygen comes from large stars that end their lives violently in supernova explosions — a ubiquitous phenomenon in the early Universe, when the rate of stellar births was dramatically higher than the rate in the Universe today; how much of that oxygen gets ejected from the galaxy by so - called «super winds,» which propel oxygen and other interstellar gases out of galaxies at hundreds of thousands of miles per hour; and how much pristine gas enters the galaxy from the intergalactic medium, which doesn't contain much oxygen.
Astronomers aren't sure when and how the bulge formed; some suggest that the Milky Way's early history was changed when the galaxy collided with another one.
A newfound pair of galaxies from the early universe is so massive that it nearly breaks the current understanding of how the cosmos evolved.
Well, apart from his death being utterly stupid (how did he not realise that the force was being used right next to him when he managed to connect the same two force users from across the galaxy moments earlier!!!)