The LETG spectrum of delta Ori

Details The LETG spectrum of delta Ori The LETG spectrum of delta Ori

Sep 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009hrxs.confe..35r&link_type=abstract

"High Resolution X-ray Spectroscopy: Towards IXO, Proceedings of the international workshop held at the Mullard Space Science La

Physics

Scientific paper

The O-giant delta Ori was observed in the wavelength range 5 - 175 A by the X-ray detector HRC-S in combination with the grating LETG on-board CHANDRA. We perform a multi-temperature fit and model the differential emission measure (DEM) of the spectrum, resulting in a temperature distribution, emission measures, and elemental abundances. Individual line fluxes and width have been measured. Based on the intercombination and forbidden lines in He-like ions the formation of these ions relative to the stellar surface can be established.

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