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UVBY photometry of HIPPARCOS stars
Photoelectric data in the uvby system have been obtained for 367southern stars of the Hipparcos Input Catalogue. Most of the stars are Fand G main sequence and fall in the magnitude range V = 9 to 10.
| Estimation of spectral classifications for bright southern stars with interesting Stromgren indices
This paper investigates the degree of success with which uvby photometrycan be applied to predict spectral classifications for 947 A, F, and Gstars brighter than an apparent magnitude of 8.3 and with four-colorindices indicating some kind of interesting, unusual, or peculiarspectrum. One or several possible spectral classifications are estimatedfor each star from photometry alone, double stars are distinguished, andthe estimates are compared with published classifications. The resultsshow that the framework provided by uvby photometry can be extended toinclude most G and K stars, reddened stars, peculiar stars, and certaintypes of double star.
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| Сазвежђа: | Пећ |
| Ректацензија: | 02h12m01.33s |
| Deклинација: | -32°17'15.5" |
| Apparent магнитуда: | 8.144 |
| Даљина: | 226.757 parsecs |
| Proper motion RA: | 22.3 |
| Proper motion Dec: | 5.8 |
| B-T magnitude: | 9.35 |
| V-T magnitude: | 8.244 |
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