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UBV polarimetry of 361 A- and F-type stars in selected areas We present simultaneous UBV linear polarization measurements for 361 A-and F-type stars with accurate colour excess and distance determination.These stars are distributed in 35 Kapteyn's Selected Areas, covering thethird and fourth quadrants of the galactic plane (|b| <= 30degr ).The obtained polarization and the known colour excess are compared. Ananalysis of the polarization distribution as a function of the stellardistance is also performed. Based on observations collected at theEuropean Southern Observatory (ESO), La Silla, Chile.
| Interstellar reddening in the Southern Hemisphere. I - The UVBY beta observations The uvby-beta photometric data obtained from a Southern Hemisphereobservational project is presented. A uvby-beta photometric network ofnearly 3900 A and early F stars has been established with the intentthat the stars serve as 'space probes' for measurements of interstellarreddening.
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Сазвежђа: | Велики пас |
Ректацензија: | 07h01m10.67s |
Deклинација: | -30°39'53.2" |
Apparent магнитуда: | 7.396 |
Даљина: | 157.729 parsecs |
Proper motion RA: | -10.2 |
Proper motion Dec: | 34 |
B-T magnitude: | 7.717 |
V-T magnitude: | 7.423 |
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