We report here the first results of a program aimed at obtaining high signal to noise (up to ~ 500) optical spectroscopy of a large sample of BL Lac objects...
We present the first spectroscopy study of massive stars in NGC55. The data, taken with VLT-FORS2 allow us to provide spectral classification for 200 objects...
Astrometry and photometry for our target fields were acquired from observations for the ESO Imaging Survey (EIS) that used the Wide Field Imager (WFI) at the 2...
VLT-FLAMES survey of massive stars (Hunter+, 2008)
As part of a European Southern Observatory (ESO) Large Programme on the Very Large Telescope (VLT, Paranal, Chile) observations were obtained for over 700 stars...
The Tarantula Survey employs three modes of the Fibre Large Array Multi-Element Spectrograph (FLAMES) instrument on the VLT: Medusa-Giraffe, ARGUS-Giraffe and...
VLT-style observing with the Wide Field Imager at the MPG/ESO 2.2-m telescope at La Silla
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...
VLT/FORS Spectroscopy in σ Orionis: Isolated Planetary Mass Candidate Members
We present low resolution optical spectra of isolated planetary candidate members of the young cluster σ Orionis. Using several key spectral features, as well...
VLT/X-shooter Spectroscopy Of The Candidate Black Hole X-ray Binary MAXI J1659-152
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...