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Eta Carinae across the 2003.5 minimum: Spectroscopic Evidence for Massive Binary Interactions
K. E. Nielsen, M. F. Corcoran, T. R. Gull +4
We have analyzed high spatial, moderate spectral resolution observations of Eta Carinae obtained with the STIS from 1998.0 to 2004.3. The spectra show prominent P-Cygni lines in H…
The UV Scattering Halo of the Central Source Associated with Eta Carinae
D. John Hillier, T. Gull, K. Nielsen +8
We have made an extensive study of the UV spectrum of Eta Carinae, and find that we do not directly observe the star and its wind in the UV. Because of dust along our line of sight…
Discovery of CH and OH in the -513 km s-1 Ejecta of Eta Carinae
E. Verner, F. Bruhweiler, K. E. Nielsen +3
The very massive star, Eta Carinae, is enshrouded in an unusual complex of stellar ejecta, which is highly depleted in C and O, and enriched in He and N. This circumstellar gas giv…
The Absorption Spectrum of High-Density Stellar Ejecta in the Line-of-Sight to Eta Carinae
T. R. Gull, G. Vieira, F. Bruhweiler +3
Using the high dispersion NUV mode of the Space Telescope Imaging Spectrograph (STIS) aboard the Hubble Space Telescope (HST) to observe Eta Carinae, we have resolved and identifie…