Alternative orbital parameters for Eta Car's alleged companion star: ``panacea or placebo in a bottle?"

Details Alternative orbital parameters for Eta Car's alleged companion star: ``panacea or placebo in a bottle?" Alternative orbital parameters for Eta Car's alleged companion star: ``panacea or placebo in a bottle?"

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aas...203.5807i&link_type=abstract

American Astronomical Society Meeting 203, #58.07; Bulletin of the American Astronomical Society, Vol. 35, p.1303

Astronomy and Astrophysics

Astronomy

Scientific paper

A consensus among some scientists suggests that Eta Carinae has a massive binary companion that revolves around the primary with a 5.5-yr period, although quantitative analysis to support the hypothesis is still lacking. One cause of the uncertainty is due to a lack of well-accepted orbital parameters to refute or prove the validity of a hypothesis rigorously.
In order to remedy the situation, Ishibashi (2001) has introduced a new orbital solution that puts the periastron passage roughly at 90 degrees away from outer conjunction. In this work we will examine this orbital model both quantitatively (based on RXTE/PCA and HST/STIS datasets) and qualitatively (with HST imaging datasets).

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