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Spectral Classification of Stars in A Supplement to the Bright Star Catalogue
MK spectral types are given for about 584 stars in A Supplement to theBright Star Catalogue. These are compared with Hipparcos parallaxes tocheck the reliability of those classifications. The estimated errors are+/-1.2 subtypes, and 10% of the luminosity classes may be wrong.
| 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.
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Gözlemler ve gökölçümü verileri
| Takýmyýldýz: | Buyuk Kopek |
| Sað Açýklýk: | 06h47m36.32s |
| Yükselim: | -17°30'30.8" |
| Görünürdeki Parlaklýk: | 7.043 |
| Uzaklýk: | 277.008 parsek |
| özdevim Sað Açýklýk: | -5 |
| özdevim Yükselim: | 6.1 |
| B-T magnitude: | 7 |
| V-T magnitude: | 7.04 |
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