Polar ring galaxies, such as NGC 4650A, are a class of galaxies that have two kinematically
distinct components that are inclined by almost 90 to each other. These striking galaxies …

The aim of the present study is to test whether the cold accretion of gas through a" cosmic
filament" is a possible formation scenario for the polar disk galaxy NGC 4650A. If polar disks …

We present new Near-Infrared (NIR) observations, in the J, H and Kn bands, for a sample of
Polar Ring Galaxies (PRGs), selected from the Polar Ring Catalogue (Whitmore et al.[CITE]) …

We present new optical imaging and spectroscopy of the peculiar, edge-on Sbc galaxy UGC
10043. Using the WIYN telescope, we have obtained B, R, and Hα+[N] images, together with …

Interactions between galaxies are very common. There are special types of interactions that
produce systems called polar ring galaxies (PRGs), composed of a lenticular, elliptical or …

We present the near-infrared and optical properties of the peculiar galaxy ESO 235-G58,
which resembles a late-type ringed barred spiral seen close to face-on. However, the …

We have obtained photometry in B and R for seven confirmed or probable polar-ring
galaxies from the Polar-Ring Catalog of Whitmore et al.(1990). The rings show a range of …

In this thesis, we employ two numerical tools-semi-analytical models and N-body plus
hydrodynamical simulations of large scale structure and individual galaxies-to explore the …

We used high resolution spectra in the optical and near-infrared wavelength range to study
the abundance ratios and metallicities of the HII regions associated with the polar disk in …

Galáxias com anel polar são sistemas compostos por uma galáxia hospedeira de tipo
espiral, lenticular ou elíptica, rodeada por um anel de gás e estrelas que orbitam em um …