SIMBAD references

2018ApJ...860...37S - Astrophys. J., 860, 37-37 (2018/June-2)

Revisiting the stellar mass-angular momentum-morphology relation: extension to higher bulge fraction and the effect of bulge type.


Abstract (from CDS):

We present the relation between stellar specific angular momentum j*, stellar mass M*, and bulge-to-total light ratio β for The H I Nearby Galaxy Survey, the Calar Alto Legacy Integral Field Area Survey, and Romanowsky & Fall data sets, exploring the existence of a fundamental plane between these parameters, as first suggested by Obreschkow & Glazebrook. Our best-fit M*-j* relation yields a slope of α = 1.03 ± 0.11 with a trivariate fit including β. When ignoring the effect of β, the exponent α = 0.56 ± 0.06 is consistent with α = 2/3 that is predicted for dark matter halos. There is a linear β-j*/M* relation for β <= 0.4, exhibiting a general trend of increasing β with decreasing j*/M*. Galaxies with β >= 0.4 have higher j* than predicted by the relation. Pseudobulge galaxies have preferentially lower β for a given j*/M* than galaxies that contain classical bulges. Pseudobulge galaxies follow a well-defined track in β-j*/M* space, consistent with Obreschkow & Glazebrook, while galaxies with classical bulges do not. These results are consistent with the hypothesis that while growth in either bulge type is linked to a decrease in j*/M*, the mechanisms that build pseudobulges seem to be less efficient at increasing bulge mass per decrease in specific angular momentum than those that build classical bulges.

Abstract Copyright: © 2018. The American Astronomical Society. All rights reserved.

Journal keyword(s): galaxies: bulges - galaxies: elliptical and lenticular, cD - galaxies: evolution - galaxies: fundamental parameters - galaxies: kinematics and dynamics - galaxies: spiral

VizieR on-line data: <Available at CDS (J/ApJ/860/37): table1.dat>

Status at CDS:   Associated data (images, light curves, etc...) being ingested in VizieR.

Simbad objects: 85

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