  We present simultaneous spectropolarimetric observations of four visible and
three infrared spectral lines from the VTT (Tenerife), together with
speckle-reconstructed filtergrams in the G band and the CaII H line core from
the DOT (La Palma). After alignment of the data sets, we used the G-band
intensity to locate bright points (BPs) in the moat of a regular sunspot. With
the cospatial and cotemporal information provided by the polarimetric data, we
characterize the magnetic, kinematic, and thermal properties of the BPs. We
find that (a) 94 % of the BPs are associated with magnetic fields; (b) their
field strengths range between 500 and 1400 G, with a rather flat distribution;
(c) the contrast of BPs in the G band depends on the angle between the vector
magnetic field and the line of sight; (d) the BPs harbor downflows of
magnetized plasma and exhibit Stokes V profiles with large area and amplitude
asymmetries; (e) the magnetic interior of BPs is hotter than the immediate
field-free surroundings by about 1000 K at equal optical depth; and (f) the
mean effective diameter of BPs in our data set is 150 km, with very few BPs
larger than 300 km. Most of these properties can be explained by the classical
magnetic flux tube model. However, the wide range of BP parameters found in
this study indicates that not all G-band BPs are identical to stable long-lived
flux tubes or sheets of kG strength.
