Spitzer-IRS Spectroscopy of the Prototypical Starburst Galaxy NGC7714
Astrophysics
2009-11-10 v2
Abstract
We present observations of the starburst galaxy NGC 7714 with the Infrared Spectrograph IRS on board the Spitzer Space Telescope. The spectra yield a wealth of ionic and molecular features that allow a detailed characterization of its properties. NGC 7714 has an HII region-like spectrum with strong PAH emission features. We find no evidence for an obscured active galactic nucleus, and with [NeIII]/[NeII]~0.73, NGC7714 lies near the upper end of normal-metallicity starburst galaxies. With very little slicate absorption and a temperature of the hottest dust component of 340K, NGC 7714 is the perfect template for a young, unobscured starburst
Cite
@article{arxiv.astro-ph/0406171,
title = {Spitzer-IRS Spectroscopy of the Prototypical Starburst Galaxy NGC7714},
author = {B. R. Brandl and D. Devost and S. J. U. Higdon and V. Charmandaris and D. Weedman and H. W. W. Spoon and T. L. Herter and L. Hao and J. Bernard-Salas and J. R. Houck and L. Armus and B. T. Soifer and C. J. Grillmair and P. N. Appleton},
journal= {arXiv preprint arXiv:astro-ph/0406171},
year = {2009}
}
Comments
To appear in the special ApJSS issue on early results from Spitzer