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Search: authors:"O. G. Nasonova"

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Intense look at Virgo Southern Extension

We collected data on radial velocities and distances of galaxies to elucidate structure and kinematics of the filament attached to the Virgo cluster from south. In the region ${\rm RA} = [12{.\!\!^{ {\mathrm {h}}}}5{--}13{.\!\!^{ {\mathrm {h}}}}5]$, Dec. = [−20°,0°] there are 171 galaxies with radial velocities VLG < 2000 km s−1, and 98 of them have distance estimates. This...

The observed infall of galaxies towards the Virgo cluster

I. D. Karachentsev O. G. Nasonova Special Astrophysical Observatory of the Russian Academy of Sciences Nizhnij Arkhyz KChR Russia A B S T R A C T We examine the velocity field of galaxies around the

Dark energy domination in the Virgocentric flow

Context. The standard ΛCDM cosmological model implies that all celestial bodies are embedded in a perfectly uniform dark energy background, represented by Einstein's cosmological constant, and experience its repulsive antigravity action.Aims. Can dark energy have strong dynamical effects on small cosmic scales as well as globally? Continuing our efforts to clarify this question...

Dark energy domination in the Virgocentric flow

Context. The standard ΛCDM cosmological model implies that all celestial bodies are embedded in a perfectly uniform dark energy background, represented by Einstein's cosmological constant, and experience its repulsive antigravity action.Aims. Can dark energy have strong dynamical effects on small cosmic scales as well as globally? Continuing our efforts to clarify this question...