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Multiwavelength study of X-ray emitting A- and B-stars testing the companion hypothesis

B. Stelzer·N. Huelamo·S. Hubrig·G. Micela·H. Zinnecker·E. Guenther
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Abstract

We report on the first results of a multi-wavelength approach to test the hypothesis that the X-ray emission from intermediate-mass stars is generated by late-type magnetically active companions. Our high spatial resolution observations of A/B-type stars in the IR using adaptive optics uncover hypothetical companion stars at arcsecond separations from the primary. The same targets are then followed-up in X-rays with Chandra to pinpoint the X-ray source. Finally, those A/B-type stars that are still detected with Chandra are studied with IR spectroscopy, where we search for temperature sensitive features indicating the existence of even closer cool companions.

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B. Stelzer, N. Huelamo, S. Hubrig, G. Micela, H. Zinnecker, E. Guenther. 2004-09-09. Multiwavelength study of X-ray emitting A- and B-stars testing the companion hypothesis. https://arxiv.org/abs/astro-ph/0409225

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