Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Extended Emission of Ultracompact HII Regions: An Overview and New
  Observations   Here we present a brief overview of UC HII regions with EE (UC HII+EE)
including our most recent effort aimed at searching for UC HII regions
associated with extended emission.

12
The categories of this paper are: nucl-th
16
The categories of this paper are: stat
1
The categories of this paper are: cs
10
The categories of this paper are: q-bio
9
The categories of this paper are: nlin
4
The categories of this paper are: cond-mat
32
The categories of this paper are: atom-ph
30
The categories of this paper are: q-alg
37
The categories of this paper are: supr-con
36
The categories of this paper are: cmp-lg
19
The categories of this paper are: eess
33
The categories of this paper are: plasm-ph
13
The categories of this paper are: quant-ph
34
The categories of this paper are: chem-ph
27
The categories of this paper are: comp-gas
2
The categories of this paper are: math