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A hot transient outflow from eta Carinae

Ehud Behar·Raanan Nordon·Eyal Ben-Bassat·Noam Soker
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Abstract

eta Carinae is a stellar binary system with a period of 5.54 years. It harbors one of the brightest and most massive stars in our galaxy. This paper presents spectroscopic evidence for a fast (up to 2,000 km/s) X-ray outflow of ionized gas launched from eta Carinae just before what is believed to be the binary periastron (point of smallest binary separation). The appearance of this high-velocity component, just as the irregular flares in the X-ray light curve, can not be explained by the simple continuous binary wind interaction, adding to the intrigue of the eta Carinae system.

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Ehud Behar, Raanan Nordon, Eyal Ben-Bassat, Noam Soker. 2007-02-27. A hot transient outflow from eta Carinae. https://arxiv.org/abs/astro-ph/0606251

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