A multiwavelength study of Nova QU Vulpeculae 1984

Abstract

view Abstract Citations (67) References (42) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS A Multiwavelength Study of Nova QU Vulpeculae 1984 Saizar, Pedro ; Starrfield, Sumner ; Ferland, Gary J. ; Wagner, R. M. ; Truran, James W. ; Kenyon, Scott J. ; Sparks, Warren M. ; Williams, Robert E. ; Stryker, L. L. Abstract We have combined ground-based optical and satellite ultraviolet spectrophotometric data to study the ejected shell of Nova Vulpecula 1984 No. 2 (QU Vul). Substantial uncertainties concerning the nature of the ionizing continuum, and the role played by density inhomogeneities, now exist. Because of these uncertainties, the chemical composition is deduced from emission-line pairs chosen to minimize the effects of variations in temperature, density, and ionization. We find that the chemical composition of the ejected shell show enhancements of several elements relative to hydrogen, namely, He, N, O, Ne, Mg, Al, and Si, as is expected for an outburst occurring on an ONeMg white dwarf. It is also shown that QU Vul ejected a large amount of aluminum into the interstellar medium, and it is estimated that only a small fraction of slow novae of this type can account for the observed abundance of aluminum in the Galaxy. Publication: The Astrophysical Journal Pub Date: October 1992 DOI: 10.1086/171890 Bibcode: 1992ApJ...398..651S Keywords: Novae; Stellar Envelopes; Stellar Mass Ejection; Stellar Spectra; White Dwarf Stars; Abundance; Chemical Evolution; Stellar Composition; Stellar Spectrophotometry; Ultraviolet Spectra; Astrophysics; STARS: ABUNDANCES; STARS: INDIVIDUAL CONSTELLATION NAME: QU VULPECULAE; STARS: NOVAE; CATACLYSMIC VARIABLES; ULTRAVIOLET: STARS full text sources ADS | data products SIMBAD (1) MAST (1) INES (1)