On two WR stars in the Large Magellanic Cloud : the high velocity of BR 52 and a newly discovered WN star.

Measurements of BR 52 (= FDA 47, = HV 5947) over three years show it to have a constant high radial velocity (within the measuring errors), in spite of the expectation (from the initial observations and its known photometric variations) that it might be a spectroscopic binary of large radial-velocity amplitude. Hydrogen absorption-line components, which have been thought to be due to a hot companion, appear rather to be formed in a variable stellar wind from the WR star. The high velocity (about +470 km/s) of BR 52 with respect to the LMC (about +270 km/s) is noted. A new WN5 star, designated W0536-67, has been found near the X-ray source CAL 60, although it does not appear to be the optical identification for this source. Some details about its spectrum and velocity are given.