Spitzer-IRS Spectroscopy of the Prototypical Starburst Galaxy NGC7714

Details Spitzer-IRS Spectroscopy of the Prototypical Starburst Galaxy NGC7714 Spitzer-IRS Spectroscopy of the Prototypical Starburst Galaxy NGC7714

2004-06-07

arxiv.org/abs/astro-ph/0406171v2

Astronomy and Astrophysics

Astrophysics

To appear in the special ApJSS issue on early results from Spitzer

Scientific paper

10.1086/422101

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

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