Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Abundances in the high-redshift Intergalactic Medium   The enrichment of the intergalactic medium (IGM) with heavy elements provides
us with a record of past star formation and with an opportunity to study the
interactions between galaxies and their environments. We summarize current data
analysis methods and observational constraints on abundances in the diffuse,
high-redshift (z > 2) IGM. This review is targeted at interested outsiders and
attempts to answer the following questions: Why should you care? What do we
want to measure? How do we do it? What do we know? What are the common
misconceptions?

36
The categories of this paper are: cmp-lg
1
The categories of this paper are: cs
16
The categories of this paper are: stat
31
The categories of this paper are: ao-sci
11
The categories of this paper are: hep-lat
34
The categories of this paper are: chem-ph
7
The categories of this paper are: hep-th
4
The categories of this paper are: cond-mat
32
The categories of this paper are: atom-ph
24
The categories of this paper are: dg-ga
21
The categories of this paper are: adap-org
33
The categories of this paper are: plasm-ph
19
The categories of this paper are: eess
14
The categories of this paper are: math-ph
15
The categories of this paper are: nucl-ex
9
The categories of this paper are: nlin