Sentences with phrase «galactic evolution»
"Galactic evolution" refers to the changes that occur in galaxies over time. This refers to how galaxies form, grow, and evolve through processes like the birth and death of stars, the merging of galaxies, and the overall transformation of their structure. Full definition
Current models of galactic evolution suggest that only one such source could be found that close to Sagittarius A *.
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The Kavli Foundation recently spoke with three astrophysicists about how this discovery can unlock clues about galactic evolution as well as the abundances of certain elements on Earth we use for everything from jewelry - making to nuclear power generation.
Long ago, when our expanding Universe was much smaller, interactions and mergers were more common; in fact, they are thought to drive galactic evolution to this day.
Although it appears that globular clusters contain some of the first stars to be produced in the galaxy, their origins and their role in galactic evolution are still unclear.
A new computer re-enactment of billions of years of galactic evolution suggests that the Milky Way owes much of its current shape to interactions with a nearby dwarf galaxy.
If this galactic fuel is really there in voids, and we can find it, the so - called accretion theory for galactic evolution could explain why void galaxies do not look like bumpkins compared to their cosmopolitan cousins.
However, Navarro argues, models of galactic evolution show that the size of a dark matter halo correlates with that of the galaxy that forms within it.
According to their calculations — which haven't yet been tested in standard computer simulations — stellar and galactic evolution took a step sideways for a while.
A native of Toronto, Canada, Freedman is an observational cosmologist studying galactic evolution and the evolution of stellar populations.
Jon Bird, a post-doctoral fellow in physics at Vanderbilt University who works on modeling the Milky Way, explained that «these data will be useful to make progress on understanding galactic evolution, as more and more detailed simulations of the formation of our galaxy are being made, requiring more complex data for comparison.»
Evidently, something big is awry concerning long - held assumptions about galactic evolution.
These shadowy figures — some of which are as large as the Milky Way but with just one - thousandth the number of stars — could be dead ends in galactic evolution.
The goal of the catalogue was to image examples of the weird and wonderful structures found among nearby galaxies, to provide snapshots of different stages of galactic evolution.
Rather than just empty, passive spaces, voids may hold clues to understanding dark matter, dark energy and galactic evolution.
Not only are these stars powerful evidence for an important theory of galactic evolution, they are also likely to be over 10 billion years old — the dim, but dogged survivors of perhaps the oldest and most massive star cluster within the Milky Way.
«Using oxygen as a tracer of galactic evolution.»
The nearly invisible satellites may be among the best places to nail down the identity of the enigmatic dark - matter particles thought to drive galactic evolution.
The merger of the two galaxies represents a vital element of galactic evolution.
Researchers said the technique could help astronomers address broad questions about galactic evolution, which is intimately tied to the growth and activity of the supermassive black holes that lurk at the heart of most, if not all, galaxies.
We now know that galaxies began dying fairly early in the history of the universe, and that central supermassive black holes and galactic collisions play key roles in galactic evolution.
Binary stars as probes of stellar and galactic evolution.
Spectral and photometric analysis of young stars in the Milky Way and other galaxies, however, show that there are a certain number of young stars that are surprisingly bereft of heavy elements, making them resemble stars that should have formed in the early stages of galactic evolution.
Astronomers were thrilled that a newly forming galaxy like I Zwicky 18 could be studied nearby to learn about galactic evolution, which is normally only observable at great distances.
A unique galaxy loaded with hard - to - produce, heavy elements sheds light on stellar histories and galactic evolution.
With rare conceptual daring, Smolin suggests a paradigm shift in cosmological theory that accepts time as the reality, allowing scientists to develop new theories of galactic evolution and understand global warming.