Wolf-Rayet stars in the Antennae unveiled by MUSE
  We present the analysis of archival Very Large Telescope (VLT) Multi Unit
Spectroscopic Explorer (MUSE) observations of the interacting galaxies NGC
4038/39 (a.k.a. the Antennae) at a distance of 18.1 Mpc. Up to 38 young
star-forming complexes with evident contribution from Wolf-Rayet (WR) stars are
unveiled. We use publicly available templates of Galactic WR stars in
conjunction with available photometric extinction measurements to quantify and
classify the WR population in each star-forming region, on the basis of its
nearly Solar oxygen abundance. The total estimated number of WR stars in the
Antennae is 4053 $\pm$ 84, of which there are 2021 $\pm$ 60 WNL and 2032 $\pm$
59 WC-types. Our analysis suggests a global WC to WN-type ratio of 1.01 $\pm$
0.04, which is consistent with the predictions of the single star evolutionary
scenario in the most recent BPASS stellar population synthesis models.
