Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Chemodynamical modelling of the Milky Way   Chemodynamical models of our Galaxy that have analytic Extended Distribution
Functions (EDFs) are likely to play a key role in extracting science from
surveys in the era of Gaia.

22
The categories of this paper are: chao-dyn
27
The categories of this paper are: comp-gas
36
The categories of this paper are: cmp-lg
9
The categories of this paper are: nlin
5
The categories of this paper are: gr-qc
16
The categories of this paper are: stat
14
The categories of this paper are: math-ph
29
The categories of this paper are: funct-an
12
The categories of this paper are: nucl-th
28
The categories of this paper are: alg-geom
18
The categories of this paper are: econ
10
The categories of this paper are: q-bio
32
The categories of this paper are: atom-ph
30
The categories of this paper are: q-alg
34
The categories of this paper are: chem-ph
37
The categories of this paper are: supr-con