The Big Bang theory is the prevailing cosmological model for the universe from
the earliest known periods through its subsequent large-scale evolution. ..... The
Big Bang theory depends on two major...
Apr 28, 2014 ... What evidence supports the galactic fountain model? .... Which of the following
gives the two main assumptions of theoretical ... Why do we believe that starburst
galaxies represent a temporary stage in galaxy evolution?
Apr 30, 2013 ... When Copernicus first created his Sun-centered model of the universe, it did not
lead to substantially better predictions of planetary .... About how many stars are
there in the disk of our Milky Way galaxy? ...... Which of the following gives the
two main assumptions of theoretical models of galaxy evolution?
The underlying assumption of the theory is that the laws of physics are the same
.... its influence on the formation and evolution of structure (ie. galaxy clustering)
will be .... These arguments are driven by theoretical concerns based on two
major .... The blue wedge shows the parameter space region that gives the
Jul 28, 2014 ... evolution models of galaxies of different morphological type following ... We also
computed a theoretical cosmic dust ... formation, while for the other two the
situation is more uncertain, ... other progenitor models there is no such an
assumption (e.g. .... The main physical quantities related to these processes.
It seems that there are still two basic contenders for a theory of galaxy formation.
... The closed box solution of equations 2 and 3 gives the well-known simple
relation Formula ... Explanations for all of these have been invented by varying
the IMF, but I ... Elementary models for the chemical evolution of a system of
Jan 25, 2006 ... This process is often called "cosmic evolution" or "cosmological ... In addition to
being a theory about the origins of the basic building blocks for the .... In both
cases, the model implies that the universe is expanding into ... The combination
of these two assumptions is often termed the cosmological ...
Dec 13, 1998 ... That these two distributions may be different on galactic scales was ... gives main
conclusions of the study. 2. Power spectra of galaxies and matter ... the
gravitational evolution leads to a network (web) of high-density filaments and .....
For this extrapolation we shall use theoretical model spectra which fit the.
The two kinds of theory are : (A) Stellar evolution theoryhow an individual star of
given mass ... theory for A. We then ask whether any models consistent with
these minimal assumptions ... of a galaxy, the light must predominantly come
from post-main-sequence stars. ...... Table 2 gives the fraction of gas never in
stars at Tgai.
These include decreasing SFR with IMF index x R~ 1 .5, constant SFR with IMF
index x ~2. ... Key words: stars: luminosity function, mass function — Galaxy:
evolution ... 2 summarizes the main features of the galactic disc model utilized. ...
This is obtained by forcing the number of stars, calculated as a theoretical LF, to
fit the ...