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Strömgren and H photometry of O and B type stars in star-forming regions
N.T. Kaltcheva 1 and
E.H. Olsen 2
Received 6 August 1999 / Accepted 8 October 1999
Strömgren and H photometry of OB-stars generally brighter than 9.5 mag 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 H photometry for 25 of them. These observations are part of an ongoing effort to improve the completeness of the existing data-base for the bright OB-type stars in the Milky Way, with the aim to investigate the structure of selected star-forming regions.
Key words: stars: early-type
* Based on data from the Strömgren Automatic Telescope of the Copenhagen Astronomical Observatory, La Silla.
Send offprint requests to: N. Kaltcheva
Online publication: December 2, 1999