Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Massive Star Forming Regions: from diagnostic tools to derived
  properties   The current state-of-the-art of multi-wavelength diagnostic tools
(evolutionary synthesis, photoionisation models) for massive star forming
regions (HII regions, starbursts, etc.) and some of their input physics
(especially model atmospheres) is reviewed. Analysis of stellar populations
based on integrated spectra from both stellar features and nebular emission
lines from the UV to IR are summarised. We stress the importance of "template"
studies at various scales (from individual stars to well studied galaxies) and
various wavelengths, to understand the processes operating in massive star
forming regions and to reliably derive their properties.

34
The categories of this paper are: chem-ph
24
The categories of this paper are: dg-ga
37
The categories of this paper are: supr-con
14
The categories of this paper are: math-ph
17
The categories of this paper are: q-fin
5
The categories of this paper are: gr-qc
3
The categories of this paper are: physics
27
The categories of this paper are: comp-gas
18
The categories of this paper are: econ
2
The categories of this paper are: math
7
The categories of this paper are: hep-th
23
The categories of this paper are: solv-int
30
The categories of this paper are: q-alg
28
The categories of this paper are: alg-geom
11
The categories of this paper are: hep-lat
26
The categories of this paper are: bayes-an