Echelle and spectropolarimetric observations of the Eta Carinae nebulosity

Details Echelle and spectropolarimetric observations of the Eta Carinae nebulosity Echelle and spectropolarimetric observations of the Eta Carinae nebulosity

Jul 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...181..333m&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 181, no. 2, July 1987, p. 333-342.

Astronomy and Astrophysics

Astrophysics

73

Astronomical Spectroscopy, Interstellar Matter, Nebulae, Polarimetry, Variable Stars, Astronomical Maps, Emission Spectra, Line Spectra, Plasma Jets, Stellar Spectra

Scientific paper

Spatially resolved H-alpha and forbidden N II line profiles from the Homunculus and outer shell of the Eta Carinae nebula are presently combined with new spectropolarimetric measurements over the line profiles as well as of the scattered continuum light from the Homunculus. The 600 km/sec-wide H-alpha component emitted by Eta Car becomes progressively shifted by +1200 km/sec in the NW quadrant of the Homunculus. The results for the Homunculus are consistent with an outflow velocity of 800 km/sec within a bipolar configuration whose projected axis is along 132 deg; a jetlike feature protrudes from the Homunculus into the outer, shock-ionized shell surrounding the Homunculus.

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