HD 226502

Mesures de vitesses radiales. VII. Accompagnement AU sol DU programme d'observation DU satellite Hipparcos. Radial velocities. VII. Ground based measurements for Hipparcos. We publish 734 radial velocities of stars distributed in 28 fields of4x4deg. We continue the PPO series (Fehrenbach et al. 1987; Duflot etal. 1990 and 1992), using the Fehrenbach objective prism method.
Photometry in the Cygnus X-1 field Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1974A&A....30..467M&db_key=AST
On the Distance to Cygnus X-1 Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1973ApJ...185L.113M&db_key=AST

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