Hipparcos data for two open clusters containing cepheids
DOI: 10.1016/S1384-1076(97)00048-1
Bibcode: 1998NewA....3..121L
Lindegren, L.; Lyngå, G.
Sweden, Australia
Abstract
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, do not contradict the proper motion results.
1998
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New Astronomy
Hipparcos
8