Evolutionary status and age spread in the young LMC cluster NGC 1850A

Details Evolutionary status and age spread in the young LMC cluster NGC 1850A Evolutionary status and age spread in the young LMC cluster NGC 1850A

Feb 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998a%26a...330..492c&link_type=abstract

Astronomy and Astrophysics, v.330, p.492-504 (1998)

Astronomy and Astrophysics

Astrophysics

8

Clusters: Globular: Ngc 1850A(Lmc), Magellanic Clouds, Stars: Evolution, Uv: Stars, Galaxies: Star Clusters

Scientific paper

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 M_sun, still close to the main sequence. The age of the main cluster NGC 1850 is estimated to be about 50 Myr. Based on observations collected by the International Ultraviolet Explorer (IUE) at the Villafranca Satellite Tracking Station of the European Space Agency.

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