156 citations · 928 across the 27 of their papers we have counts for
7 papers · 1 filter
Phase Closure Image Reconstruction for Future VLTI Instrumentation
Mercedes E. Filho, Stephanie Renard, Paulo Garcia +21
Classically, optical and near-infrared interferometry have relied on closure phase techniques to produce images. Such techniques allow us to achieve modest dynamic ranges. In order…
Phase Referencing in Optical Interferometry
Mercedes E. Filho, Paulo Garcia, Gilles Duvert +20
One of the aims of next generation optical interferometric instrumentation is to be able to make use of information contained in the visibility phase to construct high dynamic rang…
Milli-arcsecond astrophysics with VSI, the VLTI spectro-imager in the ELT era
F. Malbet, D. Buscher, G. Weigelt +49
Nowadays, compact sources like surfaces of nearby stars, circumstellar environments of stars from early stages to the most evolved ones and surroundings of active galactic nuclei c…
A Radio Census of Nuclear Activity in Nearby Galaxies
M. E. Filho, P. D. Barthel, L. C. Ho
In order to determine the incidence of black hole accretion-driven nuclear activity in nearby galaxies, as manifested by their radio emission, we have carried out a high-resolution…
The Radio Properties of Composite LINER/HII Galaxies
Mercedes E. Filho, Peter D. Barthel, Luis C. Ho
Arcsec-resolution VLA observations -- newly obtained as well as published -- of 40 nearby galaxies are discussed, completing a study of the radio properties of a magnitude-limited…
Light-year Scale Radio Cores in Four LINER Galaxies
Mercedes E. Filho, Peter D. Barthel, Luis C. Ho
The LINER galaxies NGC 2911, NGC 3079, NGC 3998, and NGC 6500 were observed at 5 GHz with the European VLBI Network at a resolution of 5 milliarcsecond and found to possess flat-sp…