SIMBAD references

2008AJ....135.1474H - Astron. J., 135, 1474-1481 (2008/April-0)

The X-ray origin of Herbig AeBe systems: new insights.


Abstract (from CDS):

We present a statistical study of the X-ray emission toward 22 Herbig AeBe stars (HAEBE) 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 λ = 3.6 cm 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 HAEBE has a different distribution from that of T Tauri stars, suggesting that X-ray emission from an unseen late-type star companion can be ruled out with an 80% confidence level. This implies that the HAEBE must have magnetic activity. In addition, we report the observation of five sources for the first time, in three detections.

Abstract Copyright:

Journal keyword(s): methods: statistical - radiation mechanisms: thermal - stars: pre-main sequence - X-rays: stars

Status at CDS:  

Simbad objects: 25

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