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Browsing by Author "Dvorak, Shawn"
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BK Lyncis: the oldest old nova?... and a Bellwether for cataclysmic variable evolution
Patterson, Joseph; Uthas, Helena; Kemp, Jonathan; Miguel Agustino, Enrique de
; Krajci, Thomas; Foote, Jerry; Hambsch, Franz-Josef; Campbell, Tut; Roberts, George; Cejudo, David; Dvorak, Shawn; Vanmunster, Tonny; Koff, Robert; Skillman, David; Harvey, David; Martin, Brian; Rock, John; Boyd, David; Oksanen, Arto; Morelle, Etienne; Ulowetz, Joseph; Kroes, Anthony; Sabo, Richard; Jensen, Lasse (Oxford University Press, 2013)
We summarize the results of a 20-year campaign to study the light curves of BK Lyncis, a nova-like star strangely located below the 2-3 hour orbital period gap in the family of cataclysmic variables. Two apparent ... -
The orbital and superhump periods of the dwarf nova SDSS J093249.57+472523.0
Shears, Jeremy; Brady, Steve; Dvorak, Shawn; Miguel Agustino, Enrique de; Morelle, Etienne; Oksanen, Arto; Sabo, Richard (Cornell University, 2012)
We report unfiltered CCD photometry of the eclipsing dwarf nova SDSS J093249.57+472523.0 obtained during its first confirmed outburst in 2011 March. The outburst amplitude was at least 3.0 magnitudes above mean quiescence ... -
The Spin-period History of Intermediate Polars
Patterson, Joseph; Miguel Agustino, Enrique de; Kemp, Jonathan; Dvorak, Shawn (American Astronomical Society, 2020-07)
We report the detailed history of spin-period changes in five intermediate polars (DQ Herculis, AO Piscium, FO Aquarii, V1223 Sagittarii, and BG Canis Minoris) during the 30–60 yr since their original discovery. Most ...
