Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Chemistry of Low Mass Substellar Objects   "Brown dwarfs" is the collective name for objects more massive than giant
planets such as Jupiter but less massive than M dwarf stars. This review gives
a brief description of the classification and chemistry of low mass dwarfs. The
current spectral classification of stars includes L and T dwarfs that encompass
the coolest known stars and substellar objects. The relatively low atmospheric
temperatures and high total pressures in substellar dwarfs lead to molecular
gas and condensate chemistry. The chemistry of elements such as C, N, O, Ti, V,
Fe, Cr, and the alkali elements play a dominant role in shaping the optical and
infrared spectra of the "failed" stars. Chemical diagnostics for the
subclassifications are described.

27
The categories of this paper are: comp-gas
36
The categories of this paper are: cmp-lg
2
The categories of this paper are: math
9
The categories of this paper are: nlin
15
The categories of this paper are: nucl-ex
22
The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
3
The categories of this paper are: physics
23
The categories of this paper are: solv-int
20
The categories of this paper are: acc-phys
25
The categories of this paper are: patt-sol
30
The categories of this paper are: q-alg
33
The categories of this paper are: plasm-ph
34
The categories of this paper are: chem-ph
21
The categories of this paper are: adap-org
26
The categories of this paper are: bayes-an