Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995astl...21..663s&link_type=abstract
Astronomy Letters, Volume 21, Issue 5, September 1995, pp.663-669; Pis'ma v Astronomicheskii Zhurnal, Vol. 21, p. 743
Astronomy and Astrophysics
Astronomy
1
Scientific paper
The structure of the halo of the star cluster NGC 2070 in the Large Magellanic Cloud is investigated on the basis of published magnitudes and positions of its stars. The cluster halo has been found to be composed of a large number of stellar subclusters (about 30) having from 10 to 150 stars. In most cases, the subclusters appear as filaments or arcs; they form ring-shaped structures, 10 - 20 pc in diameter, that coincide with ionized-gas filaments in the central part of the Tarantula nebula. The color-magnitude diagrams for the subclusters reveal a possible difference in age. The subclusters differ in stellar composition: the farther the subgroup from the cluster center, the lower the upper limit on the brightness of its stars. This can be explained either by the difference in the age of the subclusters or by a difference in the physical conditions in the original gas cloud.
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