2008/09/15 by Kevin Krisciunas, Mario Hamuy, Nicholas B. Suntzeff +10 · 1 citation
Engineering · Physics and Astronomy · #Absolute magnitude #Astronomy and Astrophysical Research #CCD and CMOS Imaging Sensors #Extinction (optical mineralogy) #Galaxy #Gamma-ray bursts and supernovae #Light curve #Photometry (optics) #Spectroscopy #Supernova #astro-ph
paper · pdf · doi:10.1088/0004-6256/137/1/34
24 pages, 6 figures
arxiv created 2008/09/15 · openalex publication_date 2008/12/02 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
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 curves of these SNe evolved in a very similar fashion until the end of the 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.