SIMBAD references

Stroemgren and Hβ photometry of OB-stars generally brighter than 9.5mag in the Canis Major - Puppis - Vela region of Milky Way is reported. The observations are based on the Milky Way luminous-star (LS) identifications and are designed to create a complete, magnitude-limited sample of LS for this field. We present new uvby photometry for 127 LS and Hβ photometry for 25 of them. These observations are part of an ongoing effort to improve the completeness of the existing uvbyβ data-base for the bright OB-type stars in the Milky Way, with the aim to investigate the structure of selected star-forming regions.