The dynamics of NGC 1866 Academic Article uri icon

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abstract

  • High-precision radial velocity measurements have been obtained for 62 stars in the young LMC cluster NGC 1866 using the Las Campanas 2.5m with échelle spectrograph. The mass-weighted mean-square velocity dispersion is σ2 = 6.5 ± 1.3 km2 s−2. The mass of the cluster M(r < 20) = 8.1 ± 1.6 × 104M, implying a M/L of 0.20 ± 0.04 in solar units.

publication date

  • 1991