Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Pan-STARRS1: Galaxy Clustering in the Small Area Survey 2   The Pan-STARRS1 survey is currently obtaining imaging in 5 bands (grizy) for
the $3\pi$ steradian survey, one of the largest optical surveys ever conducted.
The finished survey will have spatially varying depth, due to the survey
strategy. This paper presents a method to correct galaxy number counts and
galaxy clustering for this potential systematic based on a simplified signal to
noise measurement. A star and galaxy separation method calibrated using
realistic synthetic images is also presented, along with an approach to mask
bright stars. By using our techniques on a ~69 sq. degree region of science
verification data this paper shows PS1 measurements of the two point angular
correlation function as a function of apparent magnitude agree with
measurements from deeper, smaller surveys. Clustering measurements appear
reliable down to a magnitude limit of rps<22.5. Additionally, stellar
contamination and false detection issues are discussed and quantified. This
work is the second of two papers which pave the way for the exploitation of the
full $3\pi$ survey for studies of large scale structure.

36
The categories of this paper are: cmp-lg
13
The categories of this paper are: quant-ph
29
The categories of this paper are: funct-an
2
The categories of this paper are: math
10
The categories of this paper are: q-bio
12
The categories of this paper are: nucl-th
7
The categories of this paper are: hep-th
33
The categories of this paper are: plasm-ph
8
The categories of this paper are: hep-ex
35
The categories of this paper are: mtrl-th
1
The categories of this paper are: cs
25
The categories of this paper are: patt-sol
31
The categories of this paper are: ao-sci
18
The categories of this paper are: econ
19
The categories of this paper are: eess
32
The categories of this paper are: atom-ph