Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Relationship Between Masers and Massive Star Formation: What Can Be
  Learned from the Infrared?   The infrared represents an alternative wavelength regime in which to study
the environments of maser emission, while at the same time complementing the
information obtained through radio techniques. The near infrared (1-2 microns)
yields information on outflows, shocks, and reflected dust emission, while the
thermal infrared (3-30 microns) yields information on the thermal dust
distribution around stars. Thus, the infrared regime yields important clues in
determining whether masers exist in shocks, outflows, circumstellar accretion
disks, or in the dense medium close to protostars.

19
The categories of this paper are: eess
29
The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat
2
The categories of this paper are: math
37
The categories of this paper are: supr-con
26
The categories of this paper are: bayes-an
18
The categories of this paper are: econ
12
The categories of this paper are: nucl-th
33
The categories of this paper are: plasm-ph
14
The categories of this paper are: math-ph
36
The categories of this paper are: cmp-lg
4
The categories of this paper are: cond-mat
28
The categories of this paper are: alg-geom
10
The categories of this paper are: q-bio
22
The categories of this paper are: chao-dyn
31
The categories of this paper are: ao-sci