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arXiv 0809.2591astro-ph
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II-P型超新星的光度学颜色能准确测定主星系的灭绝吗?

Do the photometric colors of Type II-P Supernovae allow accurate determination of host galaxy extinction?

Kevin Krisciunas, Mario Hamuy, Nicholas B. Suntzeff, Juan Espinoza, David Gonzalez, Luis Gonzalez, Sergio Gonzalez, Kathleen Koviak, Wojtek Krzeminski, Nidia Mo… 展开作者

Kevin Krisciunas, Mario Hamuy, Nicholas B. Suntzeff, Juan Espinoza, David Gonzalez, Luis Gonzalez, Sergio Gonzalez, Kathleen Koviak, Wojtek Krzeminski, Nidia Morrell, Mark M. Phillips, Miguel Roth, Joanna Thomas-Osip

摘要:

本文介绍了SN 1999 em的红外测光,SN 2003 hn的光学测光、红外测光和光谱学。这两个天体都是II-P型超新星。这些超新星的V-[RIJHK]颜色曲线以非常相似的方式演化,直到平台阶段结束。这使我们能够确定SN 2003 hn的光比SN 1999 em的光多消光多少。由于我们通过对SN 1999 em的地面和空间光谱以及测光的模型拟合,估计了SN 1999 em的总消光,因此我们可以以合理的精度估计SN 2003 hn的总消光和绝对星等。由于SN 2003 hn的宿主星系也产生了Ia型SN 2001 el,我们可以直接比较这两个不同类型的SNe的绝对星等。

英文摘要:

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

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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