NOAO >   Observing Info >   Approved Programs >   2018A-0429

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Program Information for 2018A-0429


PI: Benjamin Shappee, U. of Hawaii, shappee@hawaii.edu
Address: Institute for Astronomy, 2680 WOODLAWN DRIVE, HONOLULU, HI 96822 USA

CoI: Juna Kollmeier, Carnegie Institution of Washington
CoI: Subo Dong, Peking University
CoI: Jose Luis Prieto, Universidad Diego Portales

Title: What Are Type-Ia Supernovae?

Abstract: Type Ia supernovae (SN Ia) currently serve as the astrophysical backbone of the cosmic distance scale due to their property as cosmological standardizable candles (Phillips 1993). What is truly remarkable, is that despite their critical use in this capacity, we do not currently know a) what their progenitors are and b) what physical mechanism makes them explode. Here we propose to address this outstanding issue by building a sample of high-signal-to-noise, late-time, nebular-phase spectroscopic LBT/MODS observations of a local sample of Type Ia Supernova. In particular, by measuring the velocities and line profiles of the supernova ejecta we can constrain the kinematic of the explosion and distinguish between progenitor models.

Program Type: Standard/Extragalactic

Scheduled Nights:
Run 1 (2018A):  LBT-SVC/MODS -- 20hrs


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



NOAO >   Observing Info >   Approved Programs >   2018A-0429

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