Publication
Near-infrared/optical counterparts of hotspots in radio galaxies
We present new high spatial resolution Very Large Telescope (VLT) and Very Large Array (VLA) observations of a sample of nine low-power (P1.4GHz
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PublicationNear-quiescent photometry of the X-ray transient J0422+32We present I-band photometry of the soft X-ray transient (SXT) J0422+32 taken during a low-brightness state over two weeks in 1993 October. The object had a...
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PublicationNebular and stellar properties of a metal-poor HII galaxy at z= 3.36We have characterized the physical properties (electron temperature, density and metallicity) of the ionized gas and the ionizing population (age, metallicity...
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PublicationNeutron-capture element abundances in the planetary nebula NGC 5315 from deep optical and near-infrared spectrophotometry★†We analyse the chemical composition of the planetary nebula (PN) NGC 5315, through high-resolution (R ∼ 40000) optical spectroscopy with Ultraviolet-Visual...
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PublicationNew bright optical spectrophotometric standards: A-type stars from the STIS Next Generation Spectral LibraryExoplanets have sparked interest in extremely high signal-to-noise ratio spectroscopic observations of very bright stars, in a regime where flux calibrators, in...
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PublicationNew brown dwarfs in Upper Sco using UKIDSS Galactic Cluster Survey science verification dataWe present first results from a deep (J = 18.7), wide-field (6.5deg2) infrared (ZY JHK) survey in the Upper Sco association conducted within the science...
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PublicationNew clues on outburst mechanisms and improved spectroscopic elements of the black hole binary V4641 Sagittarii*We present spectroscopic observations of the black hole binary V4641 Sagittarii, obtained between 2004 July 4 and 2005 March 28, which cover the minor outburst...
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PublicationNew companions to nearby low-mass starsWe present high-angular-resolution optical I-band imaging of 451 late K to mid-M nearby stars. These observations have been performed with Astralux and FastCam...
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PublicationNew constraints on the minimum mass for thermonuclear lithium burning in brown dwarfsThe theory of substellar evolution predicts that there is a sharp mass boundary between lithium and non-lithium brown dwarfs, not far below the substellar-mass...