Is Messier 74 a barred spiral galaxy?
Astrophysics
2009-11-07 v2
Abstract
We have obtained ground-based I, J and K band images of the spiral galaxy, Messier 74 (NGC 628). This galaxy has been shown to possess a circumnuclear ring of star formation from both near-infrared spectroscopy of CO absorption and sub-millimetre imaging of CO emission. Circumnuclear rings of star formation are believed to exist only as a result of a bar potential. In this paper we show evidence for a weak oval distortion in the centre of M74. We use the results of Combes & Gerin (1985) to suggest that this weak oval potential is responsible for the circumnuclear ring of star formation observed in M74.
Cite
@article{arxiv.astro-ph/0207478,
title = {Is Messier 74 a barred spiral galaxy?},
author = {Marc S. Seigar},
journal= {arXiv preprint arXiv:astro-ph/0207478},
year = {2009}
}
Comments
4 pages, 3 figures, accepted for publication in A&A