NOAO >   Observing Info >   Approved Programs >   2018A-0419

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Program Information for 2018A-0419


PI: Chick Woodward, U. of Minnesota, chickw024@gmail.com
Address: School of Physics and Astronomy, 116 CHURCH STREET, MINNEAPOLIS, MN 55455 USA

CoI: R Mark Wagner, Ohio State U.
CoI: Sumner Starrfield, Arizona State U.

Title: A MODS Study of Faint Classical Novae

Abstract: Classical novae (CNe) present a benchmark for the modeling of nuclear-hydrodynamic processes on cosmic objects and are important contributors to Galactic chemical enrichment. Optical spectroscopy of CNe provide information about the elemental abundances of the gas in the ejecta dispersing into the ISM and kinematic information related to the outburst. For example, optical spectroscopy of V339 Del and V1369 Cen show the presence of Be II and Li I spectral lines, respectively, originating from production of 7Be during nuclear processing in the explosion, which subsequently decays to 7Li as the eject expand and ionize. The Li produced is sufficient to account for the overabundance of Li observed in young stellar populations given the observed Galactic nova rate. We propose to obtain MODS spectroscopy of generally faint (< 15th) CNe, and VHE gamma-ray emitting CNe in particular, as they return to quiescence to: investigate the dynamics of the ejecta, determine the temporal evolution of both coronal and recombination lines (measuring their strength and velocity profiles), and assess whether or not the [FeX] 6374A emission line is present - an indicator of the super-soft X-ray phase.

Program Type: Standard/Galactic

Scheduled Nights:
Run 1 (2018A):  LBT-SVC/MODS -- 5hrs


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-0419

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