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1
Cosmology: The Science of the Universe
We must understand that stars, once formed, cease to participate in the general
collapse of the protogalaxy. Each newborn star initially moves inward, but after its
formation it follows an elliptical orbit and its average distance from the center ...
2
Morphological and Physical Classification of Galaxies: ...
It may have to do with details of the angular momentum distribution in the
protogalaxy. An abundance gradient, that will naturally develop in the
protogalaxy, will survive the collapse and result in the abundance structure
observed in the bulges ...
Osservatorio astronomico di Capodimonte. International Workshop, G. Longo, Massimo Capaccioli, 1992
3
The Formation and Dynamics of Galaxies: Papers from a ...
They are produced by the collapse of an isolated sphere of stars. A truly realistic
model should include not only the protogalaxy itself, but should consider the
protogalaxy in a complete cos- mological setting. In addition to the protogalaxy
itself, ...
4
Universe: The Solar System
Star formation continues because the disk contains an ample amount of
hydrogen from which to make new stars. The result is a spiral or lenticular galaxy
(Figure 24-34a). But if stars initially form in the protogalaxy at a rapid rate,
virtually all of ...
Roger Freedman, Robert Geller, William J. Kaufmann, 2010
5
Order and Chaos in Dynamical Astronomy
The tidal torque on a given protogalaxy varies in time. Initially the pro- togalaxy
and its environment expand, following the general expansion of the Universe, but
with smaller rates. Namely, the matter of the protogalaxy has the smallest rate of ...
6
The Origins of Vīraśaiva Sects: A Typological Analysis of ...
Each vast gas-cloud, thus formed, was a protogalaxy. Within each protogalaxy,
further heterogeneity developed due to random movement of atoms. As a result,
billions of smaller gas clouds were formed within a protogalaxy. Each
protogalaxy ...
7
The View From the Center of the Universe: Discovering Our ...
Although the dark matter halos of these protogalaxies cannot collapse further
because dark matter can't radiate energy, the hydrogen-helium gas can and does
, and soon it will make the first star in each protogalaxy. As the gas atoms collide,
...
Joel R. Primack, Nancy Ellen Abrams, 2007
8
Astrophysics on the Threshold of the 21st Century
with metals when the inner part of the expanding hot protogalaxy, after being
decelerated, reverses its motion into radical contraction and rapidly cools down
as the density surpasses some eritical value. This scenario was first suggested
by ...
We again make a simplifying assumption that the protogalaxy is constant during
this third stage. Finally, there is a fourth stage during which the protogalaxy
collapses to the disc and the field is amplified and shortened. During this last
stage we ...
Richard Wielebinski, Rainer Beck, 2005
10
Galactic and Intergalactic Magnetic Fields
This mechanism also arises from the rotation of a protogalaxy and finally
dominates because the background radiation field becomes ever more dilute.
The point is then that seed fields are incredibly small. Only exponential growth is
going to ...
International Astronomical Union. Symposium, R. Beck, P.P. Kronberg, 1990
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Sprawdź, o czym dyskutuje się w prasie krajowej i zagranicznej oraz jak jest stosowane słowo
protogalaxy w wiadomościach.
'Gilligan and Skipper' dwarf galaxies discovered
It may be one of the first true protogalaxies ever discovered.” ... To test whether Gilligan is a protogalaxy, Mihos says they hope to use the Very Large Array ... «Futurity: Research News, Sty 13»
Nearby Protogalaxy Discovered
Scientists at Case Western Reserve University have discovered a possible dwarf protogalaxy, and another dwarf galaxy, in the constellation Ursa Major. «Sci-News.com, Sty 13»
Astronomers Discover New Dwarf Galaxy, Possible New Protogalaxy
Through detailed study of the constellation Ursa Major, astronomers have reportedly found two new clouds of hydrogen gas, one which is a faint dwarf galaxy, ... «RedOrbit, Sty 13»
Quasar Reveals Chemistry of Ancient Universe
If the cloud is part of the protogalaxy that contains the quasar, it would consist of the ingredients for the first generation of stars. But the lack of heavy elements ... «Discovery News, Gru 12»
Earliest spiral galaxy ever observed puzzles astronomers
The stars inside a protogalaxy develop at very different rates. This uneven pace compresses the interstellar gas and creates differences in the gravitational field ... «Gizmag, Lip 12»
