# A COORDINATED X-RAY AND OPTICAL CAMPAIGN OF THE NEAREST MASSIVE ECLIPSING BINARY, δ ORIONIS Aa. I. OVERVIEW OF THE X-RAY SPECTRUM

@article{Corcoran2015ACX,
title={A COORDINATED X-RAY AND OPTICAL CAMPAIGN OF THE NEAREST MASSIVE ECLIPSING BINARY, $\delta$ ORIONIS Aa. I. OVERVIEW OF THE X-RAY SPECTRUM},
author={Michael F. Corcoran and Joy S. Nichols and Herbert Pablo and Tomer Shenar and Andrew M. T. Pollock and Wayne Lee Waldron and Anthony F. J. Moffat and Noel D. Richardson and Christopher M. P. Russell and Kenji Hamaguchi and David P. Huenemoerder and Lidia M Oskinova and W. R. Hamann and Ya{\"e}l Naz{\'e} and Richard Ignace and Nancy Remage Evans and Jamie R. Lomax and Jennifer L. Hoffman and Kenneth Gayley and Stanley P. Owocki and Maurice A. Leutenegger and Theodore R. Gull and Karen Tabetha Hole and J. Lauer and Rosina C. Iping},
journal={The Astrophysical Journal},
year={2015},
volume={809}
}
• Published 17 July 2015
• Physics
• The Astrophysical Journal
We present an overview of four deep phase-constrained Chandra HETGS X-ray observations of δ Ori A. Delta Ori A is actually a triple system that includes the nearest massive eclipsing spectroscopic binary, δ Ori Aa, the only such object that can be observed with little phase-smearing with the Chandra gratings. Since the fainter star, δ Ori Aa2, has a much lower X-ray luminosity than the brighter primary (δ Ori Aa1), δ Ori Aa provides a unique system with which to test the spatial distribution of…
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### A Coordinated X-Ray and Optical Campaign of the Nearest Massive Eclipsing Binary, δ Orionis Aa. IV. A Multiwavelength, Non-LTE Spectroscopic Analysis

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Eclipsing systems of massive stars allow one to explore the properties of their components in great detail. We perform a multi-wavelength, non-LTE analysis of the three components of the massive

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