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HD 2105


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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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Observation and Astrometry data

Constellation:ちょうこくしつ座
Right ascension:00h25m08.00s
Declination:-31°50'56.9"
Apparent magnitude:8.801
Distance:101.729 parsecs
Proper motion RA:-33.9
Proper motion Dec:-33.9
B-T magnitude:9.51
V-T magnitude:8.86

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 2105
TYCHO-2 2000TYC 6991-941-1
USNO-A2.0USNO-A2 0525-00164321
HIPHIP 1986

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