Evolutionary status and age spread in the young LMC cluster NGC 1850A *
V. Caloi and
Received 10 July 1997 / Accepted 1 October 1997
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 10 Myr is estimated, suggesting a more or less continuous star formation process. The cluster contains at least four objects with mass 55 , still close to the main sequence. The age of the main cluster NGC 1850 is estimated to be about 50 Myr.
Key words: clusters: globular: NGC 1850A(LMC) Magellanic Clouds stars: evolution UV: stars galaxies: star clusters
Send offprint requests to: V. Caloi
© European Southern Observatory (ESO) 1998
Online publication: January 16, 1998