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Binary Central Stars of Planetary Nebulae Discovered Through Photometric Variability. III. The Central Star of Abell 65
Bond, Howard E.; Jones, David; De Marco, Orsola +4 more
A growing number of close binary stars are being discovered among central stars of planetary nebulae. Recent and ongoing surveys are finding new systems and contributing to our knowledge of the evolution of close binary systems. The push to find more systems was largely based on early discoveries which suggested that 10%-15% of all central stars a…
The Chemical Composition of ρ Puppis and the Signs of Accretion in the Atmospheres of B-F-Type Stars
Lee, Byeong-Cheol; Kim, Sungeun; Lee, Jae-Woo +10 more
We investigated the chemical composition of ρ Pup using high-resolution spectral observations taken from the Very Large Telescope and the IUE archives and also spectra obtained at the 1.8 m telescope of the Bohyunsan observatory in Korea. The abundances of 56 chemical elements and the upper limits of Li and Be abundances were determined. The abund…
Pan-Chromatic Observations of the Remarkable Nova Large Magellanic Cloud 2012
Walter, Frederick M.; Drake, Jeremy J.; Woodward, Charles E. +9 more
We present the results of an intensive multiwavelength campaign on nova LMC 2012. This nova evolved very rapidly in all observed wavelengths. The time to fall two magnitudes in the V band was only 2 days. In X-rays the super soft phase began 13 ± 5 days after discovery and ended around day 50 after discovery. During the super soft phase, the Swift…
Far-ultraviolet Spectroscopy of Old Novae. I. V603 Aquila
Sion, Edward M.; Godon, Patrick; Bisol, Alexandra
We present the results of a synthetic spectral analysis of the far-ultraviolet archival International Ultraviolet Explorer, Hubble Space Telescope (HST), and FUSE observations of the fast old nova V603 Aql, obtained some 90 years after its 1918 nova outburst. Our analysis utilizes the new Hubble fine guidance sensor parallax distance for this near…