Sentences with phrase «typical galaxy»

Unlike typical galaxy formation, however, the outer blue spiral disk appears to be older than the inner red disk.
The Ultra Deep Field will be the best portrait of typical galaxies growing within the young cosmos for at least a decade, says STScI astronomer Massimo Stiavelli.
«The galaxy we have observed, EGS8p7, which is unusually luminous, may be powered by a population of unusually hot stars, and it may have special properties that enabled it to create a large bubble of ionized hydrogen much earlier than is possible for more typical galaxies at these times,» Sirio Belli, a Caltech graduate student who worked on the project, said, in the statement.
It may be that the galaxy we have observed, EGSY8p7, which is unusually (intrinsically) luminous, has special properties that enabled it to create a large bubble of ionized hydrogen much earlier than is possible for more typical galaxies at these times,» said Sirio Belli, a Caltech graduate student who helped undertake the key observations.
What we've really been trying to do is to find the more typical galaxies from the era about a billion years after the Big Bang.
Typical galaxies range from dwarfs with as few as ten million stars up to giants with one trillion stars, all orbiting a common center of mass.
Our Galaxy has a mass - to - light ratio of between 30 and 100, and typical galaxy clusters have mass - to - light ratios between 200 and 500.
«This project specifically targeted moderate black holes that inhabit typical galaxies today.
Though typical galaxy collisions take place over what to us seems a long timescale, they are short compared to the lifetimes of galaxies.
The team found typical galaxies forming stars in the Universe two billion years after the Big Bang have only twenty percent of metals (elements heavier than Helium) compared with those in the present day Universe.
In typical galaxies, normal matter is swamped by dark matter, an unidentified invisible substance that makes up most of the matter in the universe.
Their luminosity is between the luminosities of typical galaxies and the powerful quasars.
The size of Himiko is 55,000 light years, about 10 times larger than typical galaxies at the same epoch.
A Giant Galactic Ghost Intrigued by faint blurs on old photographic plates of the Virgo galaxy cluster, a nearby region teeming with galaxies, Oregon's Bothun and colleagues wondered if the apparitions might be smallish galaxies with «low surface brightness» — astronomer - speak for emitting less light per unit area than typical galaxies.
While a typical galaxy contains billions of stars, a number of tiny galaxies have been found in recent years that do not fit the classic picture and instead resemble the groups of stars known as star clusters.
What they did find is a nearby galaxy that's producing stars at a rapid pace — the equivalent of about 350 suns per year, a hundred times faster than typical galaxies.
In a typical galaxy, like the Milky Way, only a fraction of the total gas supply is actively forming stars, with the bulk of the fuel lying dormant.
«The measurements correspond to the mass of a typical galaxy,» said lead author Benny Trakhtenbrot, a researcher at ETH Zurich's Institute for Astronomy.
A typical galaxy shines with the energy from billions of stars and is tens of thousands of light years (or more) across.
This is tens of thousands of times smaller than a typical galaxy!
«The measurements of CID - 947 correspond to the mass of a typical galaxy,» Trakhtenbrot said.
They also calculated that a typical galaxy has 10 to 100 times more cold gas than astronomers had suspected.
«In a typical galaxy, if you measure its mass by looking at the rotation curve, about 90 percent of that is dark matter.»
a b c d e f g h i j k l m n o p q r s t u v w x y z