Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Long-Period Objects in the Extrasolar Planetary Systems 47 UMa and 14
  Her   The possible existence of additional long-period planetary-mass objects in
the extrasolar planetary systems 47 UMa and 14 Her is investigated. We combine
all available radial-velocity data on these stars, spanning up to 18 years. For
the 47 UMa system, we show that while a second planet improves the fit to all
available data, there is still substantial ambiguity as to the orbital
parameters of the proposed planetary companion 47 UMa c. We also present new
observations which clearly support a long-period companion in the 14 Her
system. With a period of 6906+/-70 days, 14 Her c may be in a 4:1 resonance
with the inner planet. We also present revised orbital solutions for 7
previously known planets incorporating recent additional data obtained with the
2.7m Harlan J. Smith Telescope at McDonald Observatory.

16
The categories of this paper are: stat
23
The categories of this paper are: solv-int
3
The categories of this paper are: physics
20
The categories of this paper are: acc-phys
13
The categories of this paper are: quant-ph
15
The categories of this paper are: nucl-ex
34
The categories of this paper are: chem-ph
26
The categories of this paper are: bayes-an
17
The categories of this paper are: q-fin
5
The categories of this paper are: gr-qc
37
The categories of this paper are: supr-con
0
The categories of this paper are: hep-ph
28
The categories of this paper are: alg-geom
33
The categories of this paper are: plasm-ph
7
The categories of this paper are: hep-th
24
The categories of this paper are: dg-ga