SIMBAD references

2016MNRAS.460.2143W - Mon. Not. R. Astron. Soc., 460, 2143-2151 (2016/August-1)

New lessons from the HI size-mass relation of galaxies.

WANG J., KORIBALSKI B.S., SERRA P., VAN DER HULST T., ROYCHOWDHURY S., KAMPHUIS P. and CHENGALUR J.N.

Abstract (from CDS):

We revisit the H i size-mass (D_H I-M_H i) relation of galaxies with a sample of more than 500 nearby galaxies covering over five orders of magnitude in H i mass and more than 10 B-band magnitudes. The relation is remarkably tight with a scatter σ ∼ 0.06 dex, or 14 per cent. The scatter does not change as a function of galaxy luminosity, H i richness or morphological type. The relation is linked to the fact that dwarf and spiral galaxies have a homogeneous radial profile of H i surface density in the outer regions when the radius is normalized by D_H i. The early-type disc galaxies typically have shallower H i radial profiles, indicating a different gas accretion history. We argue that the process of atomic-to-molecular gas conversion or star formation cannot explain the tightness of the D_H i-M_H i relation. This simple relation puts strong constraints on simulation models for galaxy formation.

Abstract Copyright: © 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): Galaxy: formation - galaxies: ISM

VizieR on-line data: <Available at CDS (J/MNRAS/460/2143): table2.dat>

Simbad objects: 392

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2019.09.17-13:29:40

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