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Új cikk hozzáadása| New OB-Association in Pup - CMA Not Available
 
 
 |  | 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.
 
 
 |  | Physical parameters of pulsating variables with periods between one and three days. I - Photometry and metallicities Based on a new set of observations in the Walraven VBLUW system,obtained at the European Southern Observatory, La Silla, Chile,Fe/H(VBLU) values of 57 pulsating variables, mostly with periods betweenone and three days,. are determined. The distribution of the metalabundances is shown to be essentially bimodal. All the variables withFe/H ratios of less than -0.4 were classified by Diethelm (1983) as RRdstars. They are identified as the galactic field counterpart of theCepheids in the same period range found in globular clusters.
 
 
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 Pozíciós és asztrometriai adatok
| Csillagkép: | Nagy Kutya |  | Rektaszcenzió: | 07h09m35.13s |  | Deklináció: | -19°06'55.9" |  | Vizuális fényesség: | 7.989 |  | Távolság: | 2439.024 parszek |  | RA sajátmozgás: | -5.1 |  | Dec sajátmozgás: | 4 |  | B-T magnitude: | 7.891 |  | V-T magnitude: | 7.981 |  Katalógusok és elnevezések:
 
 
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