Program: GS-2018B-Q-121
Title: | Spectroscopy of infant supernovae and peculiar transients discovered by the KMTNet Supernova Search |
PI: | Youngdae Lee |
Co-I(s): | Jae Joon Lee, Dae-Sik Moon, Sang Chul Kim, Hong Soo Park |
Abstract
We propose to conduct target-of-opportunity optical spectroscopic follow-up observations of infant (i.e. a few hours to days after the explosion) supernovae (SNe) and transients discovered by our KMTNet Supernova Program, which is optimized for real-time detection of such events by taking advantage of its 24-hour continuous sky coverage. These early spectra contain critical information for understanding several important questions, including explosion mechanisms, progenitor structure, interactions with the circumstellar material and/or binary companions. We plan to use Gemini-S/GMOS to obtain spectroscopy of around 5 infant SNe, which are 4-6 magnitudes below their peak luminosity, in addition to 1-2 peculiar, rapidly-evolving transients. These spectra will allow us to estimate redshifts, ejecta velocities, SN/transient types, abundance and other parameters that are essential in understanding their astrophysical conditions.
Publications using this program's data
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[data]
[ADS] Infant-phase reddening by surface Fe-peak elements in a normal type Ia supernova
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[data]
[ADS] The Origin and Evolution of the Normal Type Ia SN 2018aoz with Infant-phase Reddening and Excess Emission