Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Grandeur of Massive Star Formation Revealed with ISAAC   We present selected results from our ongoing investigation of high-mass
star-forming regions which are based on infrared observations with ESO's ISAAC
camera at the 8.2-m ANTU VLT telescope. Although these young stellar objects
comprise a high degree of complexity, our data enable us to disentangle these
crowded regions. By means of broad- and narrow-band imaging between 1 - 5
micron we performed a thorough characterisation of the embedded population.
Special emphasis was put on the importance of an accurate astrometry which has
a major impact on the interpretation of the data. In the case of G9.62+0.19, we
clarified the true nature of the infrared emission in the immediate vicinity of
an hot molecular core (HMC). We unveil the counterpart of this HMC in the
thermal infrared. For GGD27 IRS2, we found thermal emission at 3.8 and 4.7
micron caused by a deeply embedded object that is powering a large radio jet
and has counterparts in our mid-infrared and VLA 7-mm data. The presented
results mark a further step on the way to disclose the mechanisms of massive
star formation. They demonstrate the value of sensitive infrared imaging with
the current generation of IR cameras on 8-m-class telescopes.

17
The categories of this paper are: q-fin
15
The categories of this paper are: nucl-ex
1
The categories of this paper are: cs
5
The categories of this paper are: gr-qc
20
The categories of this paper are: acc-phys
10
The categories of this paper are: q-bio
22
The categories of this paper are: chao-dyn
0
The categories of this paper are: hep-ph
3
The categories of this paper are: physics
16
The categories of this paper are: stat
28
The categories of this paper are: alg-geom
25
The categories of this paper are: patt-sol
37
The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
7
The categories of this paper are: hep-th
4
The categories of this paper are: cond-mat