Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Determination of Galaxy Spin Vectors in the Pisces-Perseus Supercluster
  with the Arecibo Telescope   We use HI observations made with the upgraded Arecibo 305M Telescope in
August 1998 to obtain accurate spin vector determinations for 54 nearly edge-on
galaxies in the Minnesota Automated Plate Scanner Pisces-Perseus Survey
(MAPS-PP). We introduce a simple observational technique of determining the
sense of rotation for galaxies, even when their HI disks are not fully
resolved. We examined the spin vector distribution of these 54 galaxies for
evidence of preferential galaxy alignments. We use the Kuiper statistic, a
variant of the Kolmogorov--Smirnov statistic, to determine the significance of
any anisotropies in the distribution of galaxy spin vectors. The possibility of
``spin vector domains'' is also investigated. We find no significant evidence
of preferential galaxy alignments in this sample. However, we show tha t the
small sample size places weak limits on the level of galaxy alignments.

19
The categories of this paper are: eess
2
The categories of this paper are: math
18
The categories of this paper are: econ
35
The categories of this paper are: mtrl-th
10
The categories of this paper are: q-bio
12
The categories of this paper are: nucl-th
31
The categories of this paper are: ao-sci
37
The categories of this paper are: supr-con
29
The categories of this paper are: funct-an
7
The categories of this paper are: hep-th
1
The categories of this paper are: cs
26
The categories of this paper are: bayes-an
34
The categories of this paper are: chem-ph
13
The categories of this paper are: quant-ph
21
The categories of this paper are: adap-org
8
The categories of this paper are: hep-ex