Search Publications

New H I observations of KK 69. Is KK 69 a dwarf galaxy in transition?

Koribalski, B. S.; Benaglia, P.; Saponara, J. +1 more

We present new H I data of the dwarf galaxy KK 69, obtained with the Giant Metrewave Radio Telescope (GMRT) with a signal-to-noise ratio almost double previous observations. We carried out a Gaussian spectral decomposition and stacking methods to identify the cold neutral medium (CNM) and the warm neutral medium (WNM) of the H I gas. We found that…

Virial models and anisotropy of velocity dispersion in E-galaxies

Kondratyev, B. P.; Kireeva, E. N.

A tensor virial approach is used to construct detailed models of 22 flattened ellipticals. The models are combined with the new observational data: extended surface brightness distributions, the profiles of isophotes flattening and their twisting, the rotation curves and the velocity dispersion profiles. A key feature of these models is a rigorous…

Local dark energy in the Sculptor Filament of galaxies

Pruzhinskaya, M. V.; Karachentsev, I. D.; Chernin, A. D.

Two dozens of different mass galaxies observed at distances less than 10 Mpc from the Local Group are organized in the elongated structure known as the Sculptor Filament. We use recent Hubble Space Telescope data on local galaxies to study the dynamical structure and evolutionary trends of the filament. An N-body computer model, which reproduces i…