Introduction
Imaging
Speckles
SHARP I
Spectroscopy
Publications
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Spectra taken with ISAAC on VLT UT1 |
For determining the nature of the individual stars and their radial
velocities, a variety of instruments have been used by our group:
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SHARP I in speckle-spectroscopy mode
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The integral field spectrograph 3D
on the MPG 2.2m telescope in La Silla
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ISAAC on the VLT UT1
(Antu) in Paranal
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CGS4 on the UKIRT
on Mauna Kea
Since reaching the diffraction limit of a telescope requires the usage
of speckle interferometry, the spectroscopic data aquired so far is either
of high spectral or high spatial resolution. Using the integral field spectrograph
3D, radial velocities of the brightest stars could be determined. The VLT
allowed high resolution spectroscopy of the innermost fast moving sources
which gives hints on their physical nature. |
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