Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Extrasolar Giant Planet and Brown Dwarf Models   With the discovery of the companions of 51 Peg, 55 Cnc, $\tau$ Boo,
$\upsilon$ And, 70 Vir, 47 UMa, and Gl229, evolutionary and spectral models of
gas giants and/or brown dwarfs with masses from 0.3 through 60 times that of
Jupiter assume a new and central role in the emerging field of extrasolar
planetary studies. In this contribution, we describe the structural, spectral,
and evolutionary characteristics of such exotic objects, as determined by our
recent theoretical calculations. These calculations can be used to establish
direct search strategies via SIRTF, ISO, and HST (NICMOS), and via various
ground-based adaptive optics and interferometric platforms planned for the near
future.

21
The categories of this paper are: adap-org
33
The categories of this paper are: plasm-ph
3
The categories of this paper are: physics
7
The categories of this paper are: hep-th
29
The categories of this paper are: funct-an
26
The categories of this paper are: bayes-an
17
The categories of this paper are: q-fin
27
The categories of this paper are: comp-gas
19
The categories of this paper are: eess
34
The categories of this paper are: chem-ph
37
The categories of this paper are: supr-con
12
The categories of this paper are: nucl-th
8
The categories of this paper are: hep-ex
18
The categories of this paper are: econ
20
The categories of this paper are: acc-phys
10
The categories of this paper are: q-bio