V1369 Cen High-resolution Panchromatic Late Nebular Spectra in the Context of a Unified Picture for Nova Ejecta

Based on observations made with (1) the NASA/ESA Hubble Space Telescope, obtained from the data archive at the Space Telescope Science Institute (STScI), which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555; (2) the Nordic Optical Telescope, operated on the island of La Palma jointly by Denmark, Finland, Iceland, Norway, and Sweden, in the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofisica de Canarias; (3) the ESO Very Large Telescope at the Paranal Observatory; and (4) the ESO/MPG 2.2 m in the La Silla Observatory. The authors are grateful to Teddy Cheung, Jordi José Jan-Uwe Ness, Julian Osborne, Francois Teyssier, and Brian Warner for having participated in the 2013 Pisa meeting, helping define this research program. E.M. warmly thanks Pierluigi Selvelli for the enlightening spectroscopic confrontations and the friendly "calories support." S.N.S. thanks Thomas Augusteijn, Bob Gherz, Pierre Jean, Paul Kuin, Sumner Starrfield, Fred Walter, and Laura Chomiuk for discussions; John Telting for his help with the NOT observations; and the Astronomical Institute of the Charles University for a visiting professorship. The authors thank the anonymous referee for the helpful critiques. Facilities: HST(STIS) - Hubble Space Telescope satellite, VLT(UVES) - , NOT(FIES) - Nordic Optical Telescope, Swift(XRT) - Swift Gamma-Ray Burst Mission, AAVSO - American Association of Variable Star Observers International Database. Software: IRAF, Super Mongo, IDL.