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An Improved uvby-Metallicity Calibration for Metal-rich Stars
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| Spectroscopic tests of photoelectric stellar classification of abnormal stars
Spectroscopic classification is obtained for 169 northern A5-G0 starspredicted by Olsen (1979, 1980) to have abnormal spectra on the basis ofStromgren four-color photometry. The success in identifying reddenedearly type stars was nearly 100 percent, for Am and early type weaklined stars about 75 percent, for stars above main sequence about 50percent, for composite spectra about 25 percent, and for Ap and LambdaBoo stars 0 percent. Thus photoelectric photometry is a successful firststep in discovering stars of the more extreme spectroscopicabnormalities.
| Estimation of spectral classifications for bright northern stars with interesting Stromgren indices
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Osservazione e dati astrometrici
| Costellazione: | Ariete |
| Ascensione retta: | 02h34m03.64s |
| Declinazione: | +12°10'51.1" |
| Magnitudine apparente: | 7.497 |
| Distanza: | 43.085 parsec |
| Moto proprio RA: | 183.4 |
| Moto proprio Dec: | -34.6 |
| B-T magnitude: | 8.322 |
| V-T magnitude: | 7.566 |
Cataloghi e designazioni:
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