Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977ap%26ss..51..173l&link_type=abstract
Astrophysics and Space Science, vol. 51, no. 1, Sept. 1977, p. 173-176. In German.
Astronomy and Astrophysics
Astrophysics
6
Astronomical Maps, Astronomical Photography, Open Clusters, Mass Distribution, Schmidt Telescopes, Stellar Mass
Scientific paper
The reported investigation of the very young open star cluster is based on photographs which had been obtained with the 1-m Schmidt telescope of the European Southern Observatory in Chile during the time from November 30 to December 27, 1975. Enlarged maps were made and evaluated by means of the strip method. The results obtained for a photograph with an exposure time of 3 min and one with an exposure time of 1 min are listed in a table. Up to the limiting absolute magnitude of 5.8 the cluster contains 100 stars. It can be described by the Gaussian density relation. The mass of the cluster is equivalent to 246 solar masses. The central mass density is 43.1 solar masses per cu pc, the radius is about 2.6 pc, and the mean velocity of the stars is 0.64 km/sec.
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