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| Paper: |
Supernova Progenitor Mass and Metallicity from Integral Field Spectroscopic Study of the Environment |
| Volume: |
458, Galactic Archaeology: Near-Field Cosmology and the Formation of the Milky Way |
| Page: |
43 |
| Authors: |
Kuncarayakti, H.; Doi, M.; Aldering, G.; Arimoto, N.; Maeda, K.; Morokuma, T.; Pereira, R.; Usuda, T.; Hashiba, Y. |
| Abstract: |
We present preliminary results of our investigation of core-collapse
supernova (SN) progenitors by studying its immediate environment. We have
obtained integral field spectroscopy of 27 SN
explosion sites using UH88/SNIFS and Gemini-N/GMOS. This technique
enables us to obtain both spatial and spectral information of the
stellar populations present at the sites. Metallicity of the stellar population was estimated using
strong-line method, while comparison with simple stellar population
(SSP) models yields age. This age and metallicity were then adopted
for the SN progenitor star since it is assumed to be
coeval with the stellar population at the explosion site. We then determined the initial mass of the SN progenitor,
whose lifetime corresponds to the age of the parent stellar
population. With this strategy we envision to present the first sample
of type-IIP/IIL/Ib/Ic SNe with reliable mass and metallicity determination. |
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