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arXiv · 0802.1729

The X-Ray Origin of Herbig AeBe Systems: New Insights

Murad Hamidouche·Shiya Wang·Leslie W. Looney
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Abstract

We present a statistical study of the X-Ray emission toward 22 Herbig AeBe stars using the Chandra archive. We probe the origin of the X-Rays toward Herbig stars: are they intrinsic? This question is addressed by correlations between the physical stellar properties and the X-Ray emission. There is a weak correlation between the continuum radio emission at lambda = 3.6cm and Lx, which suggests that the X-Ray emission depends upon the source. On the other hand, no correlation was found with the stellar rotational period, but that only excludes solar-like magnetic activity as the origin of the X-Rays. Most importantly, the X-Ray luminosity of Herbig AeBe stars have a different distribution than T Tauri stars, suggesting X-Ray emission from an unseen late type star companion can be ruled out with an 80% confidence level. This implies that the Herbig AeBe stars must have magnetic activity. In addition, we report the observation of five sources for the first time, three detections.

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Murad Hamidouche, Shiya Wang, Leslie W. Looney. 2008-02-12. The X-Ray Origin of Herbig AeBe Systems: New Insights. https://doi.org/10.1088/0004-6256%2F135%2F4%2F1474

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