NOAO >   Observing Info >   Approved Programs >   2018A-0125

Small NOAO Logo

Program Information for 2018A-0125


PI: Lluis Galbany, U. of Pittsburgh, llg40@pitt.edu
Address: Department of Physics and Astronomy, 100 Allen Hall, Pittsburgh, PA, 15260 USA

CoI: Hanindyo Kuncarayakti, University of Turku
CoI: Tuomas Kangas, STScI
CoI: Chris Ashall, Florida State U.
CoI: Joseph Anderson, ESO
CoI: Melina Bersten, U. Nacional de la Plata
CoI: Gaston Folatelli, U. Nacional de la Plata
CoI: Claes Fransson, Stockholm University
CoI: Peter Lundqvist, Stockholm University
CoI: Keiichi Maeda, Kyoto University
CoI: Seppo Mattila, University of Turku
CoI: Paolo Mazzali, Liverpool John Moores University
CoI: Andrea Pastorello, Instituto Nazionale de Astrofisica - INAF
CoI: Giuliano Pignata, Universidad Andres Bello

Title: Nebular spectroscopy of SN 2017dio, a stripped-envelope supernova interacting with H-rich circumstellar medium: constraining the progenitor and mass loss history of a rare cosmic event

Abstract: We propose Gemini-N/GMOS observations of supernova (SN) 2017dio, a rare event of a type-Ic SN interacting with dense H-rich circumstellar medium (CSM). While the vast majority of SNe Ic are relatively CSM-free as the progenitor blew away the H/He envelope prior to the SN, the progenitor of SN 2017dio managed to remove the envelope while still retaining the material nearby. This means that envelope removal proceeded extremely rapidly, in tension with single stellar evolution theory, or the H-rich material must come from a companion star. Observations at 1 yr after the SN will yield nebular spectra, which are powerful in constraining progenitor core mass and mass loss history, thus strongly constraining the characteristics of the progenitor system that gave rise to SN 2017dio. As the final stage of massive star evolution is still not well understood, this study will provide important insights otherwise only attainable by monitoring the pre-SN evolution of massive stars in real-time.

Program Type: Standard/Extragalactic

Scheduled Nights:
Run 1 (2018A):  GEM-NQ/GMOSN -- 1.1hrs band 3 (GN-2018A-Q-319 )


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-0125

noaoprop-help@noao.edu

Small NOAO Logo