Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Physics and chemistry of hot molecular cores   Young massive star-forming regions are known to produce hot molecular gas
cores (HMCs) with a rich chemistry. While this chemistry is interesting in
itself, it also allows to investigate important physical parameters. I will
present recent results obtained with high-angular-resolution interferometers
disentangling the small-scale structure and complexity of various molecular gas
components. Early attempts to develop a chemical evolutionary sequence are
discussed. Furthermore, I will outline the difficulty to isolate the right
molecular lines capable to unambiguously trace potential massive accretion
disks.

13
The categories of this paper are: quant-ph
27
The categories of this paper are: comp-gas
1
The categories of this paper are: cs
2
The categories of this paper are: math
12
The categories of this paper are: nucl-th
37
The categories of this paper are: supr-con
25
The categories of this paper are: patt-sol
18
The categories of this paper are: econ
32
The categories of this paper are: atom-ph
20
The categories of this paper are: acc-phys
28
The categories of this paper are: alg-geom
19
The categories of this paper are: eess
0
The categories of this paper are: hep-ph
24
The categories of this paper are: dg-ga
4
The categories of this paper are: cond-mat
23
The categories of this paper are: solv-int