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Large and kinematically unbiased samples of G and K type stars. I - The dwarfs
Four-color, H-beta, and (R,I) photometry for the little-evolvedmain-sequence stars from the Bright Star Catalogue, South Galactic Pole,Griffin (1971), and Moore-Paddock-Wayman (Moore and Paddock 1950, andWayman 1960) samples are analyzed. The luminosity and heavy-elementabundances for these stars are calculated in terms of the Hyadessupercluster, the Wolf 630 group, the Sirius supercluster, and theKapteyn star group. The data reveal the presence of a metal-abundancedependent discontinuity near M(v) = +7 mag in the photometric parametersof dwarfs. The distributions of the abundances and the space motions ofthe sample stars are discussed.
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Osservazione e dati astrometrici
| Costellazione: | Scultore |
| Ascensione retta: | 00h54m50.53s |
| Declinazione: | -32°37'10.1" |
| Magnitudine apparente: | 9.16 |
| Moto proprio RA: | -13.6 |
| Moto proprio Dec: | -61 |
| B-T magnitude: | 9.879 |
| V-T magnitude: | 9.22 |
Cataloghi e designazioni:
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