Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Type 1 AGN and their Link to ULIRGS   Increasing observational evidence supports a picture for a close link among
AGN phenomenum, star-formation processes and galaxy formation. Since the
physical phenomena related to the onset of both AGN and star formation are very
likely characterized by a strong far infrared (FIR) emission it becomes
mandatory to investigate the FIR energy domain. However, because of their
faintness in the FIR energy range, very little is known about the FIR
properties of type 1 AGN, and type 2 AGN, which are supposed to be missed in
classical searches, still lack definition and samples. Our aim is to
investigate the FIR properties of optically selected type 1 AGN, compare them
to Ultraluminous Infrared Galaxies (ULIRGs) and derive some general
characteristics of the population. Expectations for future surveys are also
presented.

13
The categories of this paper are: quant-ph
33
The categories of this paper are: plasm-ph
15
The categories of this paper are: nucl-ex
35
The categories of this paper are: mtrl-th
34
The categories of this paper are: chem-ph
1
The categories of this paper are: cs
32
The categories of this paper are: atom-ph
31
The categories of this paper are: ao-sci
9
The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn
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The categories of this paper are: bayes-an
18
The categories of this paper are: econ
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
29
The categories of this paper are: funct-an
2
The categories of this paper are: math