20 citations · 20 across the 2 of their papers we have counts for
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A NICMOS Direct Imaging Search for Giant Planets around the Single White Dwarfs in the Hyades
S. Friedrich, H. Zinnecker, W. Brandner +2
We report preliminary results from our search for massive giant planets (6-12 Jupiter masses) around the known seven single white dwarfs in the Hyades cluster at sub-arcsec separat…
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…
A search for close companions in Sco OB2
Thijs Kouwenhoven, Anthony Brown, Hans Zinnecker +3
Using adaptive optics we study the binary population in the nearby OB association Scorpius OB2. We present the first results of our near-infrared adaptive optics survey among 199 (…
A free-floating planet population in the Galaxy?
Hans Zinnecker
Most young low-mass stars are born as binary systems, and circumstellar disks have recently been observed around the individual components of proto-binary systems (e.g. L1551-IRS5)…
NGC 3603 - a Local Template for Massive Young Clusters
B. Brandl, W. Brandner, F. Eisenhauer +3
We present a study of the star cluster associated with the massive Galactic HII region NGC3603 based on near-IR broad-- and narrowband observations taken with ISAAC/VLT under excel…
VLT-detection of two edge-on Circumstellar Disks in the rho Oph dark cloud
W. Brandner, S. Sheppard, H. Zinnecker +7
Observations of the rho Ophiuchi star forming region with VLT ANTU and ISAAC under 0.35" seeing conditions reveal two bipolar reflection nebulosities intersected by central dust la…