The Tarantula Survey employs three modes of the Fibre Large Array Multi-Element Spectrograph (FLAMES) instrument on the VLT: Medusa-Giraffe, ARGUS-Giraffe and...

The Wide Field Imager instrument of the MPG/ESO 2.2-m Telescope has been operating with the VLT-style Observing Software (OS) since the beginning of the year...

We present low resolution optical spectra of isolated planetary candidate members of the young cluster σ Orionis. Using several key spectral features, as well...

MAXI J1659-152 which was discovered using Swift as a Gamma-ray-burst, was later on confirmed as a candidate Galactic black-hole X-ray binary. The source was...

Evolutionary tracks are of key importance for the understanding of star formation. Unfortunately, tracks published by various groups differ so that it is...

Not Available

Atomic emission spectroscopy is a passive spectroscopy technique widely used in the diagnosis of plasmas which does not alter the internal kinectic of the...

We have analysed very high-quality HARPS and UVES spectra of 95 solar analogs, 24 hosting planets and 71 without detected planets, to search for any possible...

Volume Phase Holographic Gratings (VPHG) are gaining more and more interest as optical dispersing elements in new astronomical spectrographs at low and medium...