123 citations · 536 across the 15 of their papers we have counts for
10 papers · 1 filter
Mid-infrared photometry of the T Tauri triple system with kernel phase interferometry
J. Kammerer, M. Kasper, M. J. Ireland +11
T Tauri has long been the prototypical young pre-main-sequence star. However, it has now been decomposed into a triple system with a complex disk and outflow geometry. We aim to me…
VISION - Vienna survey in Orion. III. Young stellar objects in Orion A
Josefa E. Großschedl, João Alves, Paula S. Teixeira +14
We have extended and refined the existing young stellar object (YSO) catalogs for the Orion A molecular cloud, the closest massive star-forming region to Earth. This updated catalo…
The discrepancy between dynamical and theoretical mass in the triplet-system 2MASS J10364483+1521394
Per Calissendorff, Markus Janson, Rainer Köhler +6
We combine new Lucky Imaging astrometry from NTT/AstraLux Sur with already published astrometry from the AstraLux Large M-dwarf Multiplicity Survey to compute orbital elements and…
Multi-epoch, high spatial resolution observations of multiple T Tauri systems
Gergely Csépány, Mario van den Ancker, Péter Ábrahám +4
Context. In multiple pre-main-sequence systems the lifetime of circumstellar disks appears to be shorter than around single stars, and the actual dissipation process may depend on…
Orbital Monitoring of the AstraLux Large M-dwarf Multiplicity Sample
Markus Janson, Carolina Bergfors, Wolfgang Brandner +6
Orbital monitoring of M-type binaries is essential for constraining their fundamental properties. This is particularly useful in young systems, where the extended pre-main sequence…
GG Tau: the fifth element
E. Di Folco, A. Dutrey, J. -B. Le Bouquin +9
We aim at unveiling the observational imprint of physical mechanisms that govern planetary formation in young, multiple systems. In particular, we investigate the impact of tidal t…
The young binary HD 102077: Orbit, spectral type, kinematics, and moving group membership
Maria Wöllert, Wolfgang Brandner, Sabine Reffert +4
The K-type binary star HD 102077 was proposed as a candidate member of the TW Hydrae Association (TWA) which is a young (5-15 Myr) moving group in close proximity (~50 pc) to the s…
Orbits and masses in the young triple system TWA 5
R. Köhler, T. Ratzka, M. G. Petr-Gotzens +1
We aim to improve the orbital elements and determine the individual masses of the components in the triple system TWA 5. Five new relative astrometric positions in the H band were…
Dust and molecular shells in asymptotic giant branch stars - Mid-infrared interferometric observations of R Aql, R Aqr, R Hya, W Hya and V Hya
R. Zhao-Geisler, A. Quirrenbach, R. Koehler +1
Mid-IR (8 - 13 micron) interferometric data of four oxygen-rich AGB stars (R Aql, R Aqr, R Hya, and W Hya) and one carbon-rich AGB star (V Hya) were obtained with MIDI/VLTI between…
The search for planetary mass companions to field brown dwarfs with HST/NICMOS
M. B. Stumpf, W. Brandner, V. Joergens +4
We present the results of a high-resolution spectral differential imaging survey of 12 nearby, relatively young field L dwarfs (<1 Gyr) carried out with HST/NICMOS to search for pl…