Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Terrestrial planet formation in a circumbinary disc around a coplanar
  binary   With n-body simulations, we model terrestrial circumbinary planet (CBP)
formation with an initial surface density profile motivated by hydrodynamic
circumbinary gas disc simulations. The binary plays an important role in
shaping the initial distribution of bodies. After the gas disc has dissipated,
the torque from the binary speeds up the planet formation process by promoting
body-body interactions but also drives the ejection of planet building material
from the system at an early time. Fewer but more massive planets form around a
close binary compared to a single star system. A sufficiently wide or eccentric
binary can prohibit terrestrial planet formation. Eccentric binaries and
exterior giant planets exacerbate these effects as they both reduce the radial
range of the stable orbits. However, with a large enough stable region, the
planets that do form are more massive, more eccentric and more inclined. The
giant planets remain on stable orbits in all our simulations suggesting that
giant planets are long-lived in planetary systems once they are formed.

11
The categories of this paper are: hep-lat
17
The categories of this paper are: q-fin
19
The categories of this paper are: eess
32
The categories of this paper are: atom-ph
37
The categories of this paper are: supr-con
18
The categories of this paper are: econ
28
The categories of this paper are: alg-geom
36
The categories of this paper are: cmp-lg
14
The categories of this paper are: math-ph
12
The categories of this paper are: nucl-th
0
The categories of this paper are: hep-ph
8
The categories of this paper are: hep-ex
13
The categories of this paper are: quant-ph
26
The categories of this paper are: bayes-an
10
The categories of this paper are: q-bio
15
The categories of this paper are: nucl-ex