期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 399, 期 2, 页码 559-573出版社
WILEY-BLACKWELL PUBLISHING, INC
DOI: 10.1111/j.1365-2966.2009.15324.x
关键词
supernovae: general; galaxies: general; galaxies: statistics
资金
- National Aeronautics and Space Administration
- Science and Technology Facilities Council [ST/G009465/1, PP/E001149/1] Funding Source: researchfish
- STFC [PP/E001149/1, ST/G009465/1] Funding Source: UKRI
We present observational constraints on the nature of core-collapse (CC) supernovae (SNe) through an investigation into their radial distributions with respect to those of young and old stellar populations within their host galaxies, as traced by H alpha emission and R-band light, respectively. We discuss results and the implications they have on the nature of SN progenitors, for a sample of 177 CC SNe. We find that the radial positions of the overall CC population closely follow the radial distribution of H alpha emission, implying that both are excellent tracers of star formation within galaxies. Within this overall distribution, we find that there is a central deficit of SNII which is offset by a central excess of SNIb/c. This implies a strong metallicity dependence on the relative production of the two types, with SNIb/c arising from higher metallicity progenitors than SNII. Separating the SNIb/c into individual classes, we find that a trend emerges in terms of progenitor metallicity going from SNII through SNIb to SNIc, with the latter arising from the highest metallicity progenitors.
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