Hipparcos data for two open clusters containing cepheids

Autor: L. Lindegren, G. Lyngå
Rok vydání: 1998
Předmět:
Zdroj: New Astronomy. 3:121-123
ISSN: 1384-1076
DOI: 10.1016/s1384-1076(97)00048-1
Popis: 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.
Databáze: OpenAIRE