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NGC 5896



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Population studies. II - Kinematics as a function of abundance and galactocentric position for (Fe/H) of -0.6 or less
A catalog is presented of some 1200 Galactic objects which have radialvelocities and (Fe/H) abundances of -0.6 or less. These data areanalyzed to yield information on the kinematic properties of the olderpopulations of the Galaxy and on the interdependence between kinematicsand abundance. It is found that the kinematics of the availablekinematically selected stars differ from those of the nonkinematicallyselected objects. No evidence is found for any significant difference inthe kinematic properties of the various halo subgroups, nor for anydependence of kinematics on abundance. While the rotation of the halo issmall at about 37 km/s for (Fe/H) of -1.2 or less, it rises quickly forhigher abundances to a value of about 160 km/s at (Fe/H) = 0.6. Objectsin the abundance range -0.9 to -0.6 appear to belong predominantly to apopulation possessing the kinematic characteristics of a thick disk. Theimplications of these findings for the suggestion that globular clustersbelong to the same population as the noncluster objects, for the originof the thick disk, and for the mass of the Galaxy are discussed.

HI observations of some galaxies and their faint companions
Twenty-one-cm line observations of single galaxies with multiple faintcompanions have been carried out with the Nancay Decimetric Radiotelescope. Twelve galaxies have been detected, including six companiongalaxies. Three new detections in HI are reported. Flux density upperlimits are given for the undetected galaxies.

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Observation and Astrometry data

Right ascension:15h13m50.60s
Aparent dimensions:0.288′ × 0.269′

Catalogs and designations:
Proper Names   (Edit)
NGC 2000.0NGC 5896

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