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| Paper: |
δ Sco 2011 Periastron Passage: Near-IR
Interferometry and Radio mm Observations |
| Volume: |
464, Circumstellar Dynamics at High Resolution |
| Page: |
197 |
| Authors: |
Štefl, S.; LeBouquin, J.-B.; Rivinius, Th.; Baade, D.; Carciofi, A. C.; Haubois, X.; Corder, S.; Curé, M.; Kanaan, S. |
| Abstract: |
In order to study disk perturbation during the periastron we used the
PIONIER (low resolution H-band) and AMBER (high resolution,
Brγ region) interferometers, ESO/APEX LABOCA and SABOCA
bolometers and the CARMA array. Reference observations of the
unperturbed disk were obtained in 2010 and early 2011, more observations at
the time of the periastron and the following 1–2 months. While the compact
H-band disk was only little affected during the periastron, Brγ disk
shows strong variations in the visibility profiles during the first months
after the periastron. Radio observations lead to detection of the disk at
0.35, 0.87, 1 and 3 mm. The periastron was followed by a drop in the radio
flux by 10–15%. |
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