A New 3-D Model for the Homunculus of eta Carinae

Details A New 3-D Model for the Homunculus of eta Carinae A New 3-D Model for the Homunculus of eta Carinae

May 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aas...188.7803d&link_type=abstract

American Astronomical Society, 188th AAS Meeting, #78.03; Bulletin of the American Astronomical Society, Vol. 28, p.954

Astronomy and Astrophysics

Astronomy

Scientific paper

Using a sequence of Hubble Space Telescope images (1990-1995),we have measured the astrometric (plane-of-the-sky) expansion of the dust cloud (the homunculus) surrounding the super-luminous, eruptive star eta Carinae. The measured expansion rate is 0.66%/year, implying an average ejection date of 1842. This date is in excellent agreement with the 1843 peak in the star's ``Great Eruption of 1838-1860.'' Doppler velocities for the expanding gas cloud were obtained from the ground-based spectra of Hillier and Allen [1992, 1993] for each point in the gas cloud. We combine the Doppler velocities with the astrometric velocities to create a new model (the hourglass) for the shape of the expanding gas cloud. Three tests are employed to compare our new model to two recently published models (the double-sphere and bipolar-caps). Only the hourglass model is consistent with all the available data.

Affiliated with

Also associated with

No associations

Rating

A New 3-D Model for the Homunculus of eta Carinae does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with A New 3-D Model for the Homunculus of eta Carinae, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A New 3-D Model for the Homunculus of eta Carinae will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1355693