Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: IR Detection of Low-Mass Secondaries in Spectroscopic Binaries   This paper outlines an infrared spectroscopic technique to measure the radial
velocities of faint secondaries in known single-lined binaries. The paper
presents our H-band observations with the CSHELL and Phoenix spectrographs and
describes detections of three low-mass secondaries in main-sequence binaries:
G147-36, G164-67, and HD144284 with mass ratios of 0.562+-0.011, 0.423+-0.042,
and 0.380+-0.013, respectively. The latter is one of the smallest mass ratios
derived to date.

36
The categories of this paper are: cmp-lg
15
The categories of this paper are: nucl-ex
13
The categories of this paper are: quant-ph
25
The categories of this paper are: patt-sol
9
The categories of this paper are: nlin
8
The categories of this paper are: hep-ex
29
The categories of this paper are: funct-an
0
The categories of this paper are: hep-ph
37
The categories of this paper are: supr-con
33
The categories of this paper are: plasm-ph
28
The categories of this paper are: alg-geom
2
The categories of this paper are: math
31
The categories of this paper are: ao-sci
23
The categories of this paper are: solv-int
1
The categories of this paper are: cs
21
The categories of this paper are: adap-org