Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Homogeneous studies of transiting extrasolar planets. II. Physical
  properties   I present an homogeneous determination of the physical properties of 14
transiting extrasolar planetary systems for which good data are available. The
input quantities for each system are the results of the light curve analyses
(Paper 1), and published measurements of the stellar velocity amplitude, Teff
and [Fe/H]. The physical properties are determined by interpolating within
tabulated predictions from stellar theory. Statistical uncertainties are found
using a perturbation algorithm, which gives a detailed error budget for every
output quantity. Systematic uncertainties are assessed for each quantity by
comparing the values found using different stellar models. As a theory-free
alternative, physical properties are also calculated using an empirical
mass-radius relation constructed using low-mass eclipsing binary stars. The
properties of the planets depend mostly on parameters measured from the light
and velocity curves, and have only a minor sensitivity to theoretical
predictions. In contrast, the orbital semimajor axes and stellar masses have a
strong dependence on theoretical predictions, and their systematic
uncertainties can be substantially larger than the statistical ones. Using the
empirical mass--radius relation instead, their values are smaller by up to 15%.
Thus our understanding of extrasolar planets is currently limited by our lack
of understanding of low-mass stars. Using all known transiting planets, I find
that correlations between their orbital periods, masses and surface gravities
are significant at the 2-3 sigma level. However, the separation of the known
planets into two classes according to their Safronov number is weaker than
previously found, and may not be statistically significant (abridged).

14
The categories of this paper are: math-ph
28
The categories of this paper are: alg-geom
23
The categories of this paper are: solv-int
4
The categories of this paper are: cond-mat
36
The categories of this paper are: cmp-lg
1
The categories of this paper are: cs
3
The categories of this paper are: physics
9
The categories of this paper are: nlin
19
The categories of this paper are: eess
15
The categories of this paper are: nucl-ex
5
The categories of this paper are: gr-qc
22
The categories of this paper are: chao-dyn
33
The categories of this paper are: plasm-ph
26
The categories of this paper are: bayes-an
20
The categories of this paper are: acc-phys
31
The categories of this paper are: ao-sci