A High-Resolution Study of Eta Carinae's Outer Ejecta

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dc.creatorWeis, Kerstin
dc.creatorCorcoran, Michael F.
dc.creatorDavidson, Kris
dc.creatorHumphreys, Roberta M.
dc.date2002-07-25
dc.date.accessioned2026-07-07T02:04:26Z
dc.date.available2026-07-07T02:04:26Z
dc.descriptionEta Carinae is a very luminous and unstable evolved star. Outflowing material ejected during the star's giant eruption in 1843 surrounds it as a nebula which consists of an inner bipolar region(the Homunculus) and the Outer Ejecta. The outer ejecta is very filamentary and shaped irregularly. Kinematic analysis, however, shows a regular bi-directional expansion despite of the complex morphology. Radial velocities in the outer ejecta reach up to 2000 kms/s and give rise to X-ray emission first detected by ROSAT. We will present a detailed study of the outer ejecta based on HST images, high-resolution echelle spectra for kinematic studies, images from CHANDRA/ACIS and HST-STIS spectra.
dc.description2 pages, 1 figure, to appear in : K.A. van der Hucht, A. Herrero & C. Esteban (eds.), A Massive Star Odyssey, from Main Sequence to Supernova, Proc. IAU Symp. No. 212 (San Francisco: ASP); paper with image in high-resolution at http://www.mpifr-bonn.mpg.de/staff/kweis/publications.html
dc.identifierhttps://arxiv.org/abs/astro-ph/0207541
dc.identifierhttp://arxiv.org/abs/astro-ph/0207541
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/4757
dc.subjectAstrophysics
dc.titleA High-Resolution Study of Eta Carinae's Outer Ejecta
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