SIMBAD references

2017MNRAS.468.2058E - Mon. Not. R. Astron. Soc., 468, 2058-2080 (2017/June-3)

The frequency and stellar-mass dependence of boxy/peanut-shaped bulges in barred galaxies.


Abstract (from CDS):

From a sample of 84 local barred, moderately inclined disc galaxies, we determine the fraction that hosts boxy or peanut-shaped (B/P) bulges (the vertically thickened inner parts of bars). We find that the frequency of B/P bulges in barred galaxies is a very strong function of stellar mass: 79 per cent of the bars in galaxies with log (M*/M)w >= 10.4 have B/P bulges, while only 12 per cent of those in lower mass galaxies do. (We find a similar dependence in data published by Yoshino & Yamauchi for edge-on galaxies.) There are also strong trends with other galaxy parameters - e.g. Hubble type: 77 per cent of S0-Sbc bars, but only 15 per cent of Sc-Sd bars, have B/P bulges - but these appear to be side effects of the correlations of these parameters with stellar mass. In particular, despite indications from models that a high gas content can suppress bar buckling, we find no evidence that the (atomic) gas mass ratio M_H  I + He/M*_ affects the presence of B/P bulges, once the stellar-mass dependence is controlled for. The semimajor axes of B/P bulges range from one-quarter to three-quarters of the full bar size, with a mean of Rbox/Lbar = 0.42 ± 0.09 and Rbox/aε = 0.53 ± 0.12 (where Rbox is the size of the B/P bulge and aε and Lbar are lower and upper limits on the size of the bar).

Abstract Copyright: © 2017 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): galaxies: bulges - galaxies: elliptical and lenticular, cD - galaxies: spiral - galaxies: structure - galaxies: structure

VizieR on-line data: <Available at CDS (J/MNRAS/468/2058): table1.dat tabled1.dat>

Simbad objects: 89

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