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The VLTI/MIDI survey of massive young stellar objects - Sounding the inner regions around intermediate- and high-mass young stars using mid-infrared interferometry
Paul A. Boley, Hendrik Linz, Roy van Boekel +10
We aim to characterize the distribution and composition of circumstellar material around young massive stars, and to investigate exactly which physical structures in these objects…
Probing the temporal and spatial variations of dust emission in the protoplanetary disk of DG Tau with VLTI/MIDI - Preliminary results
K. E. Gabanyi, L. Mosoni, A. Juhasz +5
The signatures of dust processing and grain growth - related to the formation of rocky planets - are easily seen in mid-infrared spectral features. One important diagnostic tool in…
Planet or Brown Dwarf? Inferring the Companion Mass in HD 100546 from the Wall Shape using Mid-Infrared Interferometry
Gijs D. Mulders, Sijme-Jan Paardekooper, Olja Panić +3
Giant planets form in protoplanetary disks while these disks are still gas-rich, and can reveal their presence through the annular gaps they carve out. HD 100546 is a gas-rich disk…
Characterizing Exoplanets in the Visible and Infrared: A Spectrometer Concept for the EChO Space Mission
A. M. Glauser, R. van Boekel, O. Krause +30
Transit-spectroscopy of exoplanets is one of the key observational techniques to characterize the extrasolar planet and its atmosphere. The observational challenges of these measur…
Young Stellar Objects in Lynds 1641: Disks, Accretion, and Star Formation History
Min Fang, Jinyoung Serena Kim, Roy van Boekel +3
We investigate the young stellar objects (YSOs) in the Lynds~1641 (L1641) cloud using multi-wavelength data including Spitzer, WISE, 2MASS, and XMM covering ~1390 YSOs across a ran…
Refined physical properties and g',r',i',z',J,H,K transmission spectrum of WASP-23b from the ground
N. Nikolov, G. Chen, J. J. Fortney +4
Multi-band observations of planetary transits using the telescope defocus technique may yield high-quality light curves suitable for refining the physical properties of exoplanets…
Dynamics during outburst: VLTI observations of the young eruptive star V1647 Ori during its 2003-2006 outburst
L. Mosoni, N. Sipos, P. Abraham +11
Context: It is hypothesized that low-mass young stellar objects undergo eruptive phases during their early evolution. The outburst of V1647 Ori between 2003 and 2006 offered a rare…