110 citations · 319 across the 10 of their papers we have counts for
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Quantified HI Morphology VII: star-formation and tidal influence on local dwarf HI morphology
B. W. Holwerda, N. Pirzkal, W. J. G. de Blok +1
Scale-invariant morphology parameters applied to atomic hydrogen maps (HI) of galaxies can be used to quantify the effects of tidal interaction or star-formation on the ISM. Here w…
Comparison of HI and optical redshifts of galaxies - The impact of redshift uncertainties on spectral line stacking
Natasha Maddox, Kelley M. Hess, S. -L. Blyth +1
Accurate optical redshifts will be critical for spectral co-adding techniques used to extract detections from below the noise level in ongoing and upcoming surveys for HI, which wi…
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…
Luminous Red Galaxies in Simulations: Cosmic Chronometers?
S. M. Crawford, A. L. Ratsimbazafy, C. M. Cress +3
There have been a number of attempts to measure the expansion rate of the universe at high redshift using Luminous Red Galaxies (LRGs) as "chronometers". The method generally assum…