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HD 125616


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Radial velocities from microdensitometer scans of objective-prism spectra
Measures were made from scans of objective-prism spectra of more than1000 stars on four plates using a PDS microdensitometer. The plates areall of a single star field and were taken with the CTIO Schmidttelescope. They have been measured by hand in the course of theobjective-prism radial velocity survey of CIDA. Reductions of themeasures were made in order to determine whether this very rapid machinecan be used to obtain positions of spectral lines with no loss ofprecision when compared to the measures made by hand. Results of thereduction show that the PDS measures can be used to obtain radialvelocities as accurately as the hand measures. In addition, photometricparameters are computed which allow the determination of photographicblue magnitudes, color indices, and quantitative spectralclassifications. The ease and rapidity of obtaining the scans indicatethat many large-scale studies of galactic structure and kinematics arepractical as well as possible.

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观测天体数据

星座:半人馬座
右阿森松:14h21m18.80s
赤纬:-34°15'13.0"
视星:8.753
距离:1204.819 天文距离
右阿森松适当运动:-16.7
赤纬适当运动:2.8
B-T magnitude:10.596
V-T magnitude:8.906

目录:
适当名称   (Edit)
HD 1989HD 125616
TYCHO-2 2000TYC 7290-1511-1
USNO-A2.0USNO-A2 0525-17371670
HIPHIP 70160

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