A Fourier analysis of the intensity distribution in the planes of nine spiral galaxies is performed. In terms of the arm classification scheme of cite[Elmegreen...
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PublicaciónThe nature of arms in spiral galaxies. IV. Symmetries and asymmetries
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PublicaciónThe Nature of Close Companions of the BL Lacertae Objects 1ES 0502+675 and 1ES 1440+122
We report on deep radio images and optical spectroscopy of two BL Lac objects that have very close compact companions. The two targets, 1ES 0502+675 and 1ES...
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PublicaciónThe Nature of Dwarf Elliptical Galaxies: An Observing Project for OSIRIS
Although dwarf elliptical galaxies are the dominant galaxy population in nearby clusters, their origin and nature remain a mystery. The main aim of this project...
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PublicaciónThe nature of faint radio galaxies at high redshifts
We present spectra and near-infrared images of a sample of faint radio sources initially selected as promising high-redshift radio galaxy (HzRG) candidates. We...
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PublicaciónThe Nature of Fossil Galaxy Groups: Are They Really Fossils?
We use SDSS-DR4 photometric and spectroscopic data out to redshift z ~ 0.1 combined with ROSAT All Sky Survey X-ray data to produce a sample of 25 fossil groups...
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PublicaciónThe nature of giant clumps in high-z discs: a deep-learning comparison of simulations and observations
We use deep learning to explore the nature of observed giant clumps in high-redshift disc galaxies, based on their identification and classification in...
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PublicaciónThe Nature of Growing Bulges Within z < 1.3 Galaxy Disks in the GOODS-N Field
We analyze central surface brightness μ0, nuclear and global colors of intermediate redshift disk galaxies. On an apparent-diameter-limited sample of 398...
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PublicaciónThe nature of late-type spiral galaxies: structural parameters, optical and near-infrared colour profiles and dust extinction
We analyse V- and H-band surface photometry of a sample of 18 Sb-Sd galaxies. Combining high-resolution Hubble Space Telescope (HST) images with ground-based...
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PublicaciónThe nature of LINER galaxies:. Ubiquitous hot old stars and rare accreting black holes
Context. Galaxies, which often contain ionised gas, sometimes also exhibit a so-called low-ionisation nuclear emission line region (LINER). For 30 years, this...