Time evolution of SN Ia NIR magnesium velocity

Time evolution of SN Ia near-infrared magnesium velocity. The magnesium velocity of the GNIRS SN 2011fe spectra underwent a rapid decline and an extended period of constant velocity. Note that SN 1999by is a spectroscopically peculiar SN Ia, much like SN 1991bg. The magnesium velocity of normal SNe Ia all show similar constant behavior as that of SN 2011fe.

Credit:

NOIRLab/Gemini Observatory/AURA

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Id:geminiann13004b
Type:Chart
Release date:Feb. 14, 2013, 2:23 p.m.
Related announcements:geminiann13004
Size:900 x 750 px

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