A kinematically decoupled component in NGC4778
Astrophysics
2007-05-23 v1
Abstract
We present a kinematical and photometrical study of a member, NGC4778, of the nearest (z=0.0137) compact group: Hickson 62. Our analysis reveals that Hickson 62a, also known as NGC4778, is an S0 galaxy with kinematical and morphological peculiarities, both in its central regions (r < 5'') and in the outer halo. In the central regions, the rotation curve shows the existence of a kinematically decoupled stellar component, offset with respect to the photometric center. In the outer halo we find an asymmetric rotation curve and a velocity dispersion profile showing a rise on the SW side, in direction of the galaxy NGC4776.
Keywords
Cite
@article{arxiv.astro-ph/0701646,
title = {A kinematically decoupled component in NGC4778},
author = {M. Spavone and E. Iodice and G. Longo and M. Paolillo},
journal= {arXiv preprint arXiv:astro-ph/0701646},
year = {2007}
}
Comments
Proceedings of the first workshop of astronomy and astrophysics for students