𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Two populations of open clusters

✍ Scribed by A. Strobel


Book ID
102756285
Publisher
John Wiley and Sons
Year
1989
Tongue
English
Weight
640 KB
Volume
310
Category
Article
ISSN
0004-6337

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Using proper motion data from the Hipparcos satellite it is shown that the cepheids S Nor and U Sgr are members of the open clusters NGC 6087 and M 25, respectively. The precision of the Hipparcos data is needed to conclusively carry out a membership test. Parallax data, also obtained from Hipparcos