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Uvby-beta observations of 528 type B stars with V between the 8th and 9th magnitude
The paper presents uvby-beta measurements of 528 type B stars selectedfrom the SAO Catalog on the basis of two criteria: the spectral types inthe range B3-B5 and mV between the 8th and the 9th magnitude. Reddeningindependent (c1) values are estimated from the spectral classificationand compared to the observed values. No systematic trend with observed(b-y), H-beta, or spectral type appears to be present, but the range of(c1) residuals is surprisingly large. A rather large part of the starshas small beta values, smaller than for the BIa supergiants. Only twoare classified as O stars and most of them have the suffix e, ne, ornne. Most beta values for the O type stars are slightly above the upperlimit of 2.585 m.
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Gözlemler ve gökölçümü verileri
| Takýmyýldýz: | Pupa |
| Sað Açýklýk: | 07h36m43.90s |
| Yükselim: | -24°06'29.3" |
| Görünürdeki Parlaklýk: | 8.064 |
| Uzaklýk: | 1666.667 parsek |
| özdevim Sað Açýklýk: | -6.3 |
| özdevim Yükselim: | 5.2 |
| B-T magnitude: | 7.933 |
| V-T magnitude: | 8.054 |
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