431 citations · 833 across the 18 of their papers we have counts for
7 papers · 1 filter
The Opacity of Spiral Galaxy Disks IX; Dust and Gas Surface Densities
B. W. Holwerda, R. J. Allen, W. J. G. de Blok +4
Our aim is to explore the relation between gas, atomic and molecular, and dust in spiral galaxies. Gas surface densities are from atomic hydrogen and CO line emission maps. To esti…
Quantified HI Morphology III: Merger Visibility Times from HI in Galaxy Simulations
B. W. Holwerda, N. Pirzkal, T. J. Cox +5
Major mergers of disk galaxies are thought to be a substantial driver in galaxy evolution. To trace the fraction and the rate galaxies are in mergers over cosmic times, several obs…
Quantified HI Morphology IV: The Merger Fraction and Rate in WHISP
B. W. Holwerda, N. Pirzkal, W. J. G. de Blok +3
The morphology of the atomic hydrogen (HI) disk of a spiral galaxy is the first component to be disturbed by a gravitational interaction such as a merger between two galaxies. We u…
Quantified HI Morphology II : Lopsidedness and Interaction in WHISP Column Density Maps
B. W. Holwerda, N. Pirzkal, W. J. G. de Blok +4
Lopsidedness of the gaseous disk of spiral galaxies is a common phenomenon in disk morphology, profile and kinematics. Simultaneously, the asymmetry of a galaxy's stellar disk, in…
Quantified HI Morphology I: Multi-Wavelengths Analysis of the THINGS Galaxies
B. W. Holwerda, N. Pirzkal, W. J. G. de Blok +4
Galaxy evolution is driven to a large extent by interactions and mergers with other galaxies and the gas in galaxies is extremely sensitive to the interactions. One method to measu…
Stellar population and kinematics of NGC404
A. Bouchard, Ph. Prugniel, M. Koleva +1
NGC404 is a nearly face-on nearby low-luminosity lenticular galaxy. Probing its characteristics provides a wealth of information on the details of possible evolution processes of d…