@inproceedings{32b4ecf7f74b440c853bccb4141b9741,
title = "Eta car: The good, the bad and the ugly of nebular and stellar confusion",
abstract = "Observations in the far-UV provide a unique opportunity to investigate the very massive star 7] Car and its hot binary companion, 7] Car B. 7] Car was observed with FUSE over a large portion of the 5.54 year spectroscopic period before and after the 2003.5 minimum. The observed spectrum is defined by strong stellar wind signatures, primarily from 7] Car A, complicated by the strong absorptions of the ejecta surrounding 7] Car plus interstellar absorption. The Homunculus and Little Homunculus are massive bipolar ejecta historically associable with LBV outbursts in the 1840s and the 1890s and are linked to absorptions at -513 and -146 km s- 1, respectively. The FUSE spectra are confused by the extended nebulosity and thermal drifting of the FUSE co-pointed instruments. Interpretation is further complicated by two B-stars sufficiently close to 7] Car to be included most of the time in the large FUSE aperture. Followup observations partially succeeded in obtaining spectra of at least one of these B-stars through the smaller apertures, allowing potential separation of the B-star contributions and 7] Car. A complete analysis of all available spectra is currently underway. Our ultimate goals are to directly detect the hot secondary star i f possible with FUSE and to identify the absorption contributions to the overall spectrum especially of the stellar members and the massive ejecta.",
keywords = "Individual stars: eta carinae, Spectroscopy",
author = "Nielsen, {K. E.} and {Vieira Kober}, G. and Gull, {T. R.} and R. Iping and Hillier, {D. J.} and G. Sonneborn and Jensen, {A. G.}",
year = "2009",
doi = "10.1063/1.3154039",
language = "English (US)",
isbn = "9780735406728",
series = "AIP Conference Proceedings",
pages = "162--164",
booktitle = "Future Directions in Ultraviolet Spectroscopy - A Conference Inspired by the Accomplishments of the Far Ultraviolet Spectroscopic Explorer Mission",
note = "Future Directions in Ultraviolet Spectroscopy Conference ; Conference date: 20-10-2008 Through 22-10-2008",
}