The Infrared Nucleus of the Wolf-Rayet Galaxy Henize 2-10
Abstract
We have obtained near-infrared images and mid-infrared spectra of the starburst core of the dwarf Wolf-Rayet galaxy He 2-10. We find that the infrared continuum and emission lines are concentrated in a flattened ellipse 3-4'' or 150 pc across which may show where a recent accretion event has triggered intense star formation. The ionizing radiation from this cluster has an effective temperature of 40,000 K, corresponding to 30M stars, and the starburst is 0.5-1.5 × 107 years old.
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