Publications of the MPIfR
Optical & Infrared
Interferometry Group
R. Lachaume, Th. Preibisch, Th. Driebe
The B[e] star Hen 3-1191 resolved with MIDI
"ESO Astrophysics Symposia"
Proceedings of the ESO Workshop: "The power of
optical/IR interferometry: recent scientific results and 2nd generation
VLTI instrumentation"
April 4-8, 2005 in Garching, Germany
pg.199-203 (2008)
Abstract
We report on spectrally dispersed, spatially resolved VLTI/MIDI
observations of
the B[e] star Hen 3-1191. The N-band visibilities give an equivalent
disc
diameter increasing from 24 mas at 8 µm to 36 mas at 13 µm, with a
slight
silicate feature. We explain the spectral energy distribution and the
N-band
visibility continuum with an ad-hoc circumstellar disc model with a
hot,
puffed-up inner rim. However, it does not help us in determining Hen
3-1191's
still unknown nature. High resolution visible spectroscopy and/or an
accurated
determination of its distance are the likely keys to this
determination.
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