The distance of the Pegasus Dwarf Irregular Galaxy is discussed in the light of new, deep photometry of the resolved stars taken in the bands V, R, and I of the...
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PublicationThe distance to the Pegasus Dwarf Irregular Galaxy: an open question
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PublicationThe extended narrow-line region in NGC 4151
This paper presents high-resolution, high dynamic range narrow-band images of the extended narrow-line region (ENLR), as well as broad-band continuum images, of...
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PublicationThe formation of counterrotating cores in elliptical galaxies
The mechanism proposed by Kormendy (1984) for the formation of counterrotating cores in elliptical galaxies is investigated using self-consistent numerical...
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PublicationThe Galactic globular cluster system - Theoretical constraints for alpha-enhanced compositions
This paper discusses synthetic horizontal branches constructed from a grid of horizontal-branch (HB) evolutionary tracks with the alpha-elements enhanced by a...
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PublicationThe impact of supernova fragments on the evolution of multisupernova remnants
Analytical approximations and 2D hydrodynamical simulations are used to examine the interaction of supernova fragments with the internal structure of large...
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PublicationThe inclination of network magnetic fields
We have observed the linear polarization of 21 bright grains of the photospheric network close to the disk center. The linear polarization of Fe I 6302.5 A was...
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PublicationThe interacting system NGC 7753-7752 (Arp 86). I - BVRI photometry
BVRI surface photometry is presented for the interacting galaxy pair Arp 86 (NGC 7753-7752). Deep high-resolution images were obtained in order to study the...
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PublicationThe kinematics and morphology of NGC 520
New long-slit optical spectroscopy and optical and NIR images of NGC 520 are presented. Velocity-dispersion and radial-velocity profiles are obtained from the...
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PublicationThe kinematics of the extended gas in the Seyfert galaxy NGC 3516
Long-slit spectroscopy of the extended gas in the Seyfert galaxy NGC 3516 reveals considerable substructure in the narrow emission lines with several...