We analyze images of BL Lacertae objects obtained with the Hubble Space Telescope WFPC2 and the F814W filter. The nine objects cover a redshift range of 0.19 to...
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PublicationHubble space telescope observations of BL Lacertae environments
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PublicationIntegral field spectroscopy with GEMINI: Extragalactic star cluster in NGC1275
Studies of globular cluster systems play a critical role in our understanding of galaxy formation. Imaging with the Hubble Space Telescope has revealed that...
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PublicationInternal kinematics and dynamical models of dwarf spheroidal galaxies around the Milky Way
We review our current understanding of the internal dynamical properties of the dwarf spheroidal galaxies surrounding the Milky Way. These are the most dark...
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PublicationLocal high-mass star-forming regions
The study of the stellar content and physics of the ionized gas in local high-mass star-forming regions is specially important for better understanding...
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PublicationMeasurements of the solar aureole at the Teide Observatory
Daily measurements of the solar aureole were made at the Vacuum Newton Telescope (/D=40 cm) at the Teide Observatory (Tenerife) for various airmasses. We use...
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PublicationModelling Lick spectroscopic indexes with the tunable filters of OSIRIS on GTC
We present the modelling of new indicators for old and intermediate age stellar populations based on the absorption features of Mg λ ˜ 5175 Å, Fe λ ˜ 4383 Å...
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PublicationMorphology and kinematics of the ionised gas in early-type galaxies
We present results of our ongoing study of the morphology and kinematics of the ionised gas in 48 representative nearby elliptical and lenticular galaxies using...
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PublicationObservational properties of accretion discs: Precessing and warped?
Over the last 40 years, X-ray astronomy missions have revealed long-term, superorbital periods in a variety of X-ray binaries. These modulations can provide...
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PublicationOn the origin and fate of ionised-gas in early-type galaxies: The SAURON perspective
By detecting ionised-gas emission in 75% of the cases, the SAURON integral-field spectroscopic survey has further demonstrated that early-type galaxies often...