High-resolution UKIRT observations of circumnuclear star formation in M100
Abstract
We present high-resolution, near-infrared imaging of the circumnuclear region of the barred spiral galaxy M100 (=NGC 4321), accompanied by near-infrared spectroscopy. We identify a total of 43 distinct regions in the K-band image, and determine magnitudes and colours for 41 of them. By comparison with other near-infrared maps we also derive colour excesses and K-band extinctions for the knots. Combining the imaging and spectroscopic results, we conclude that the knots are the result of bursts of star formation within the last 15-25 Myr. We discuss the implications of these new results for our dynamical and evolutionary understanding of this galaxy.
Cite
@article{arxiv.astro-ph/9810350,
title = {High-resolution UKIRT observations of circumnuclear star formation in M100},
author = {Stuart D. Ryder and Johan H. Knapen},
journal= {arXiv preprint arXiv:astro-ph/9810350},
year = {2009}
}
Comments
10 pages, 4 figures, uses mn-1.4.sty. Accepted for publication in Monthly Notices of the Royal Astronomical Society