期刊
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
卷 154, 期 1, 页码 188-192出版社
UNIV CHICAGO PRESS
DOI: 10.1086/422101
关键词
galaxies : starburst; infrared : galaxies
We present observations of the starburst galaxy NGC 7714 with the Infrared Spectrograph 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 H II region-like spectrum with strong polycyclic aromatic hydrocarbon emission features. We find no evidence for an obscured active galactic nucleus, and with [Ne III]/[Ne II] approximate to 0.73, NGC 7714 lies near the upper end of normal-metallicity starburst galaxies. With very little silicate absorption and a temperature of the hottest dust component of 340 K, NGC 7714 is the perfect template for a young, unobscured starburst.
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