Unveiling Eta Car: Chandra Observations during the 2003.5 Event

Details Unveiling Eta Car: Chandra Observations during the 2003.5 Event Unveiling Eta Car: Chandra Observations during the 2003.5 Event

Sep 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002cxo..prop.1136c&link_type=abstract

Chandra Proposal ID #04200312

Physics

Chandra Proposal Id #04200312

Scientific paper

Understanding the supermassive star Eta Car is important for a variety of topics: the formation and evolution of extremely massive stars and their influence on their environments. Eta Car has been a mystery since its giant eruption in the 1840s. A possible key to the puzzle is the identification of periodic changes in some near IR emission lines, and the discovery of repeatable X-ray eclipses. The next X-ray eclipse will occur during AO4, and we propose to use HETG to observe the variations in the spectral and spatial distribution of the emission during this event. In conjunction with scheduled HST/STIS, INTEGRAL, IR and optical spectroscopy, and radio observations, these HETG observation provide key information which may finally help us solve the riddle of this star.

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