Binary Stars in the Orion Nebula Cluster (2006)
Koehler, Rainer, Petr-Gotzens, Monika G., McCaughrean, Mark J., Bouvier, Jerome, Duchene, Gaspard, Quirrenbach, Andreas, ...
We report on a high-spatial-resolution survey for binary stars in the periphery of the Orion Nebula Cluster, at 5 - 15 arcmin (0.65 - 2 pc) from the cluster center. We observed 228 stars with...
A Multiplicity Survey of the Rho Ophiuchi Molecular Clouds (2005)
Ratzka, Thorsten, Koehler, Rainer, Leinert, Christoph
We present a volume-limited multiplicity survey with magnitude cutoff (K =< 10.5 mag) of 158 young stellar objects located within or in the vicinity of the Rho Ophiuchi Dark Cloud. With exception of...
Multiplicity of X-Ray Selected T Tauri Stars in Chamaeleon (2001)
We report on a multiplicity survey of a sample of X-ray selected young stars in the Chamaeleon association. We used speckle-interferometry and direct imaging to find companions in the separation...
Star formation environments and the distribution of binary separations (1998)
Brandner, Wolfgang, Koehler, Rainer
We have carried out K-band speckle observations of a sample of 114 X-ray selected weak-line T Tauri stars in the nearby Scorpius-Centaurus OB association. We find that for binary T Tauri stars...