Cl* NGC 1850 VAF 1336 , the SIMBAD biblio

IUE spectra have been obtained for 15 members of the very young LMC cluster NGC 1850A. The extinction law toward the cluster is similar to the one generally accepted for the 30 Dor region. We derive the effective temperatures and bolometric luminosities to estimate the age and mass for each star. An age spread of 2 to 10Myr is estimated, suggesting a more or less continuous star formation process. The cluster contains at least four objects with mass ≥55M_☉, still close to the main sequence. The age of the main cluster NGC 1850 is estimated to be about 50Myr.