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2011MNRAS.416.2401H - Mon. Not. R. Astron. Soc., 416, 2401-2414 (2011/October-1)
Quantified H I morphology – I. Multi-wavelength analysis of the THINGS galaxies.
HOLWERDA B.W., PIRZKAL N., DE BLOK W.J.G., BOUCHARD A., BLYTH S.-L., VAN DER HEYDEN K.J. and ELSON E.C.
Abstract (from CDS):
In this paper, we explore six morphological parameters calculated over the extent of the stellar (optical) disc and the extent of the gas disc for a range of wavelengths spanning ultraviolet (UV), optical, near- and far-infrared and 21 cm (H I) of 28 galaxies from The H I Nearby Galaxy Survey (THINGS). Although the THINGS sample is small and contains only a single ongoing interaction, it spans both non-interacting and post-interacting galaxies with a wealth of multi-wavelength data. We find that the choice of area for the computation of the morphological parameters is less of an issue than the wavelength at which they are measured. The signal of interaction is as good in the H I as at any of the other wavelengths at which morphology has been used to trace the interaction rate to date, mostly star formation dominated ones (near- and far-ultraviolet). The Asymmetry and M20 parameters are the ones that show the most promise as tracers of interaction in 21 cm line observations.
Abstract Copyright: 2011 The Authors Monthly Notices of the Royal Astronomical Society2011 RAS
Journal keyword(s): galaxies: fundamental parameters - galaxies: interactions - galaxies: kinematics and dynamics - galaxies: spiral - galaxies: structure
VizieR on-line data: <Available at CDS (J/MNRAS/416/2401): tablea2.dat tablea1.dat tablea.dat>
Simbad objects: 36
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