Authors
H.-M. Schmid
A. Bazzon
J. Milli
R. Roelfsema
N. Engler
D. Mouillet
E. Lagadec
E. Sissa
J.-F. Sauvage
C. Ginski
A. Baruffolo
J.-L. Beuzit
A. Boccaletti
A. J. Bohn
R. Claudi
A. Costille
S. Desidera
K. Dohlen
C. Dominik
M. Feldt
T. Fusco
D. Gisler
J. H. V. Girard
R. Gratton
T. Henning
N. Hubin
F. Joos
M. Kasper
M. Langlois
A. Pavlov
J. Pragt
P. Puget
S.P. Quanz
B. Salasnich
R. Siebenmorgen
M. Stute
M. Suarez
J. Szulágyi
C. Thalmann
M. Turatto
S. Udry
A. Vigan
F. Wildi
Date (dd-mm-yyyy)
2017-06-01
Title
SPHERE/ZIMPOL observations of the symbiotic system R Aquarii. I. Imaging of the stellar binary and the innermost jet clouds
Journal
Astronomy & Astrophysics
Volume
602
Publication Year
2017-06-01
Document type
Article
Faculty
Faculty of Science (FNWI)
Institute
Anton Pannekoek Institute for Astronomy (API)
Abstract
Context. R Aqr is a symbiotic binary system consisting of a mira variable, a hot companion with a spectacular jet outflow, and an extended emission line nebula. Because of its proximity to the Sun, this object has been studied in much detail with many types of high resolution imaging and interferometric techniques. We have used R Aqr as test target for the visual camera subsystem ZIMPOL, which is part of the new extreme adaptive optics (AO) instrument SPHERE at the Very Large Telescope (VLT). Aims: We describe SPHERE/ZIMPOL test observations of the R Aqr system taken in Hα and other filters in order to demonstrate the exceptional performance of this high resolution instrument. We compare our observations with data from the Hubble Space Telescope (HST) and illustrate the complementarity of the two instruments. We use our data for a detailed characterization of the inner jet region of R Aqr. Methods: We analyze the high resolution ≈ 25 mas images from SPHERE/ZIMPOL and determine from the Hα emission the position, size, geometric structure, and line fluxes of the jet source and the clouds in the innermost region
URL
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Permalink
https://hdl.handle.net/11245.1/fa1c50fe-f642-4287-be09-22b5baa55d51