SIMBAD references

2010ApJ...717..342H - Astrophys. J., 717, 342-347 (2010/July-1)

Type Ibc supernovae in disturbed galaxies: evidence for a top-heavy initial mass function.


Abstract (from CDS):

We compare the radial locations of 178 core-collapse supernovae (CCSNe) to the R-band and Hα light distributions of their host galaxies. When the galaxies are split into "disturbed" and "undisturbed" categories, a striking difference emerges. The disturbed galaxies have a central excess of CCSNe and this excess is almost completely dominated by supernovae of types Ib, Ic, and Ib/c, whereas type II supernovae dominate in all other environments. The difference cannot easily be explained by metallicity or extinction effects, and thus we propose that this is direct evidence for a stellar initial mass function that is strongly weighted toward high-mass stars, specifically in the central regions of disturbed galaxies.

Abstract Copyright:

Journal keyword(s): galaxies: interactions - galaxies: ISM - supernovae: general

VizieR on-line data: <Available at CDS (J/ApJ/717/342): table1.dat table2.dat>

Simbad objects: 320

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