Volume 393, Number 2, October II 2002
|Page(s)||499 - 502|
|Section||Cosmology (including clusters of galaxies)|
|Published online||23 September 2002|
Is Messier 74 a barred spiral galaxy?
Near-infrared imaging of M 74
Joint Astronomy Centre, 660 N. A'ohoku Place, Hilo, HI 96720, USA
Corresponding author: email@example.com
Accepted: 18 July 2002
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 M 74. 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 M 74.
Key words: galaxies: individual: M 74 / galaxies: fundamental parameters / galaxies: spiral / galaxies: structure
© ESO, 2002
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.