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TYC 8406-262-1


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Population studies. I - The Bidelman-MacConnell 'weak-metal' stars
BRVI and DDO photometry are presented for 309 Bidelman-MacConnell'weak-metal' stars. Radial velocities are calculated for most of thestars having Fe/H abundances of no more than -0.8. The photometricobservations were carried out using the 0.6-meter and 1.0-metertelescopes of the Siding Spring Observatory. Photometric taxonomy wasused to classify the stars as dwarfs, giants, red-horizontal branchstars, and ultraviolet-bright stars, respectively. It is found that 35percent of the stars are giants; 50 percent are dwarfs; and 5 percentbelong to the red-horizontal branch group. The role of selection effectsin investigations of the formation of the Galaxy is discussed on thebasis of the photometric observations and the observational constraintsproposed by Eggen et al. (1962).

Metal-Deficient Giants in the Galactic Field - Catalogue and Some Physical Parameters
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观测天体数据

星座:印第安座
右阿森松:20h30m28.50s
赤纬:-45°31'16.5"
视星:10.166
右阿森松适当运动:-25.3
赤纬适当运动:-43.6
B-T magnitude:10.892
V-T magnitude:10.226

目录:
适当名称   (Edit)
TYCHO-2 2000TYC 8406-262-1
USNO-A2.0USNO-A2 0375-38845399
HIPHIP 101176

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