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Paper: Eta Carinae: The "Nearby" Ejecta
Volume: 332, The Fate of the Most Massive Stars
Page: 277
Authors: Gull, T.R.
Abstract: Within the Homunculus lie very complex nebular structures that are not easily resolved by ground-based instruments. The high spatial resolution of Hubble Space Telescope (HST) combined with appropriate spectral resolutions of the Space Telescope Imaging Spectrograph (STIS) are well matched to separating the spectrum of η Car from the surrounding complex ejection nebulosities. HST/STIS has also allowed us to resolve the nebulosities into structures associable with known historical events. Spectral analysis and modeling are leading to characterization of the ejecta physical conditions, estimates of relative elemental abundances. Multiple studies of the ejecta around η Car have determined that nitrogen is overabundant. Optical properties of the dust around η Car are known to be peculiar. Ongoing studies of these ejecta may lead to insight of the enrichment of primordial galaxies by the early, very massive stars.
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