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The Primordial Binary Population - I: A near-infrared adaptive optics search for close visual companions to A star members of Scorpius OB2
M. B. N. Kouwenhoven, A. G. A. Brown, H. Zinnecker +2
We present the results of a near-infrared adaptive optics survey with the aim to detect close companions to Hipparcos members in the three subgroups of the nearby OB association Sc…
Multiwavelength study of X-ray emitting A- and B-stars testing the companion hypothesis
B. Stelzer, N. Huelamo, S. Hubrig +3
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 act…
The Formation of Free-Floating Brown Dwarves and Planetary-Mass Objects by Photo-Erosion of Prestellar Cores
A. P. Whitworth, H. Zinnecker
We explore the possibility that, in the vicinity of an OB star, a prestellar core which would otherwise have formed an intermediate or low-mass star may form a free-floating brown…