Spitzer-IRS Spectroscopy of the Prototypical Starburst Galaxy NGC7714

B.R. Brandl , D. Devost , S.J.U. Higdon , V. Charmandaris , D. Weedman , H.W.W. Spoon , T.L. Herter , L. Hao

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J. Bernard-Salas J.R. Houck L. Armus B.T. Soifer C.J. Grillmair P.N. Appleton

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classification 🌌 astro-ph

keywords starburstfeaturesgalaxyngc7714absorptionactiveallowboard

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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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Spitzer-IRS Spectroscopy of the Prototypical Starburst Galaxy NGC7714

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