We present the analysis of five black hole candidates identified from gravitational microlensing surveys. Hubble Space Telescope astrometric data and densely...
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PublicationAn Isolated Mass-gap Black Hole or Neutron Star Detected with Astrometric Microlensing
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PublicationAstrometric monitoring of the binary brown dwarf DENIS-P J1228.2-1547
We present astrometric monitoring data of the binary brown dwarf DENIS-P J1228.2-1547. The data have been obtained with the Hubble Space Telescope over a time...
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PublicationAstrometric orbits of spectral binary brown dwarfs - I. Massive T dwarf companions to 2M1059-21 and 2M0805+48
Near-infrared spectroscopic surveys have uncovered a population of short-period, blended-light spectral binaries composed of low-mass stars and brown dwarfs...
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PublicationAstrometric search for a planet around VB 10
We observed VB 10 in August and September 2009 using the FORS2 camera of the VLT with the aim of measuring its astrometric motion and of probing for the...
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PublicationAstrometry with Carte du Ciel plates, San Fernando zone . II. CdC-SF: a precise proper motion catalogue
Context. The historic plates of the Carte du Ciel, an international cooperative project launched in 1887, offer valuable first-epoch material for the...
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PublicationAstrometry with Carte du Ciel plates, San Fernando zone. I. Digitization and measurement using a flatbed scanner
Context: The historic plates of the Carte du Ciel, an international cooperative project launched in 1887, offers valuable first-epoch material for determining...
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PublicationCCD and Photographic Observations of the Comet C/1996 B2 (Hyakutake)
About 200 CCD images of the comet C/1996 B2 - HYAKUTAKE were obtained and reduced, using four approaches by PPM stars and one by a GSC star, on March 20, 24, 25...
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PublicationCCD photometry and astrometry for visual double and multiple stars of the HIPPARCOS catalogue. I. Presentation of the large scale project
A description is given of the activities of an international working group created with the aim of obtaining both photometric and astrometric observations of...
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PublicationCCD survey with the CMASF from the Southern Hemisphere
A subcatalogue with positions and magnitudes of stars brighter than V = 16 and declinations between -30° and 0° is presented. The observations have been carried...