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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.
| Four-colour UVBY and H-beta photometry of all stars earlier than G0 and brighter than MPG of about 10.7 M in Selected Area 203 towards the Chamaeleon-Musca dark clouds Results are presented of Stromgren uvby(beta) photometry for 213 starsearlier than G0 and brigher than mpg of about 10.7 m inSelected Area 203. The observed area lies close to the geometric centerof the Chamaeleon-Musca dark clouds complex. The results yield V, (b-y),m1, c1, and beta on the standard systems, withoverall rms errors for one observation of one star of 0.010, 0.004,0.007, 0.009, and 0.011, respectively.
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Gözlemler ve gökölçümü verileri
Takýmyýldýz: | Sinek |
Sað Açýklýk: | 11h53m21.86s |
Yükselim: | -74°32'22.7" |
Görünürdeki Parlaklýk: | 8.939 |
Uzaklýk: | 153.139 parsek |
özdevim Sað Açýklýk: | -69.2 |
özdevim Yükselim: | -31.3 |
B-T magnitude: | 9.449 |
V-T magnitude: | 8.982 |
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