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1999A&A...352..605K - Astronomy and Astrophysics, volume 352, 605-608 (1999/12-2)
Stroemgren and Hβ photometry of O and B type stars in star-forming regions. II. Monoceros OB2, Canis Major OB1 and Collinder 121.
KALTCHEVA N.T., OLSEN E.H. and CLAUSEN J.V.
Abstract (from CDS):
Stroemgren and Hβ photometry of O and B type stars, generally brighter than 10 mag is presented for the fields of the galactic OB associations Monoceros OB2, Canis Major OB1 and Collinder 121. The observations are based on the PPM catalogue identifications and are designed to improve the completeness of the existing uvbyβ data for the bright early-type stars in these fields. We present new uvby photometry for 343 stars and Hβ photometry for 213 of them. These observations are part of our effort to study the structure of selected star-forming regions in the Milky Way, utilizing uvbyβ photometry.
Abstract Copyright: ∼
Journal keyword(s): stars: early-type - Galaxy: open clusters and associations: individual: Mon OB2, CMa OB1, Col 121
VizieR on-line data: <Available at CDS (J/A+A/352/605): stars.dat table3.dat table4.dat>
Simbad objects: 43
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