Context: .Observational follow-up programmes for the characterization of ultra-luminous X-ray sources (ULXs) require the construction of clean samples of such...
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PublicaciónToward a clean sample of ultra-luminous X-ray sources
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PublicaciónToward measuring supermassive black hole masses with interferometric observations of the dust continuum
This work focuses on active galactic nuclei (AGNs) and on the relation between the sizes of the hot dust continuum and the broad-line region (BLR). We find that...
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PublicaciónTowards an automatic classification of distortions as merging indicators in AGN host galaxies
Does a merging event always precede AGN activity? In this starting PhD project, we will try to address this question by quantifying the distortions and...
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PublicaciónTracing a high redshift cosmic web with quasar systems
Context. To understand the formation, evolution, and present-day properties of the cosmic web we need to study it at low and high redshifts. Aims: We trace the...
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CharlaTriggering Quasars
In the 50 years since their discovery, it has become increasingly recognised that quasars are not merely signposts to the distant Universe, but also play a key...
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PublicaciónTwo emission line objects with z > 0.2 in the optical filament apparently connecting the Seyfert galaxy NGC 7603 to its companion
We present new spectroscopic observations of an old case of anomalous redshift - NGC 7603 and its companion. The redshifts of the two galaxies which are...
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PublicaciónTwo new confirmed massive relic galaxies: red nuggets in the present-day Universe
We confirm two new local massive relic galaxies, i.e. untouched survivors of the early Universe massive population: Mrk 1216 and PGC 032873. Both show early and...
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PublicaciónTwo-dimensional Spectroscopy Reveals an Arc of Extended Emission in the Gravitational Lens System Q2237+0305
We present two-dimensional spectroscopy of the gravitational lens system Q2237+0305 (Einstein Cross) obtained with the INTEGRAL fiber system in subarcsecond...
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PublicaciónUBVRI observations of quasars
UBVRI observations of 37 QSOs are reported. The sample is considered as a good representation of the bright (V not greater than 17) quasars in the compilation...