Do the photometric colors of Type II-P Supernovae allow accurate determination of host galaxy extinction.Report as inadecuate




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We present infrared photometry of supernova SN 1999em, plus optical photometry, infrared photometry,and optical spectroscopy of SN 2003hn. Both objects were Type II-P SNe. The V − RIJHK color curvesof these SNe evolved in a very similar fashion until the end of the plateau phase. This allows us todetermine how much more extinction the light of SN 2003hn suffered compared to SN 1999em. Sincewe have an estimate of the total extinction suffered by SN 1999em from model fits of ground-based andspace-based spectra as well as photometry of SN 1999em, we can estimate the total extinction and absolutemagnitudes of SN 2003hn with reasonable accuracy. Since the host galaxy of SN 2003hn also produced theType Ia SN 2001el, we can directly compare the absolute magnitudes of these two SNe of different types.Nota general

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Author: Hamuy Wackenhut, Mario; - Krisciunas, Kevin; - Suntzeff, Nicholas B.; - Espinoza, Juan; - Gonzalez, David; - Gonzalez, Luis; - Go

Source: http://repositorio.uchile.cl/



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