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Submit a new article| A homogeneous catalog of new UBV and H-beta photometry of B- and A-type stars in and around the Scorpius-Centaurus OB association B- and A-type stars in and near the Sco-Cen OB association areinvestigated with UBV and H-beta photometry to acquire data relevant tothe luminosity function of Sco-Cen. The measurements generally consistof two 10-s integrations of U, B, V, (W, N) filters, and theobservations are corrected iteratively for atmospheric extinction andinstrumental response. The data presented give the mean V magnitude,mean B-V, mean U-B, and the estimated uncertainties for these values.The catalog provides a homogeneous catalog of data for a large fieldwith stellar objects delineating membership to the association Sco-Cenand that affect the luminosity function of the aggregate.
 
 
 |  | Walraven photometry of nearby southern OB associations Homogeneous Walraven (VBLUW) photometry is presented for 5260 stars inthe regions of five nearby southern OB associations: Scorpio Centaurus(Sco OB2), Orion OB1, Canis Major OB1, Monoceros OB1, and Scutum OB2.Derived V and (B - V) in the Johnson system are included.
 
 
 |  | On the Distance of the Scorpio / Centaurus Dark Cloud Not Available
 
 
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 Observation and Astrometry data
| Constellation: | Οφιούχος |  | Right ascension: | 16h41m26.56s |  | Declination: | -24°24'08.5" |  | Apparent magnitude: | 8.292 |  | Distance: | 75.301 parsecs |  | Proper motion RA: | -41.8 |  | Proper motion Dec: | -20.7 |  | B-T magnitude: | 8.854 |  | V-T magnitude: | 8.339 |  Catalogs and designations:
 
 
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