Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Possible Effect of the Period of Galaxy Formation on the Angular
  Correlation Function   During the epoch of galaxy formation, the formation of the first galaxies in
regions of high overdensity may lead to an initial amplitude of the spatial
correlation function of galaxies, $\xi_0,$ much higher than that expected in
linear perturbation theory. This initially high ``bias'' would consequently
decrease to the near-unityvalues expected from local observations. Such a
``Decreasing Correlation Period'' (DCP), detected in N-body simulations under
certain conditions by several authors, is parametrised in a simple way, ending
at a ``transition'' redshift $z_t.$ Consequences on $w_0,$ the amplitude of the
angular correlation function of faint galaxies (for a fixed apparent magnitude
range), have been estimated. The sensitivity of $w_0$ to $z_t,$ and how this is
affected by the redshift distribution of the galaxies in the sample, by low
redshift spatial correlation function behaviour, by cosmology, and by the rate
at which $\xi_0$ decreases during the DCP, are shown and discussed. This simple
model is intended as a first exploration of the effects of the DCP for a likely
range of parameter space. Comparison with the Hubble Deep Field (HDF) estimate
of $w_0$ (Villumsen et al. 1996) indicates that the DCP is compatible with
observation for values of $z_t$ in the theoretically expected range $z_t
\gtapprox 1.$ However, tighter observational constraints on the HDF redshift
distribution and on low redshift correlation function growth will be needed
either to detect the DCP unambiguously or to constrain $z_t$ to redshifts
greater than those of galaxies in existing surveys.

23
The categories of this paper are: solv-int
9
The categories of this paper are: nlin
2
The categories of this paper are: math
34
The categories of this paper are: chem-ph
20
The categories of this paper are: acc-phys
32
The categories of this paper are: atom-ph
31
The categories of this paper are: ao-sci
12
The categories of this paper are: nucl-th
3
The categories of this paper are: physics
17
The categories of this paper are: q-fin
37
The categories of this paper are: supr-con
36
The categories of this paper are: cmp-lg
0
The categories of this paper are: hep-ph
18
The categories of this paper are: econ
35
The categories of this paper are: mtrl-th
28
The categories of this paper are: alg-geom