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Browsing by Author "Patterson, Joseph"
Now showing items 1-7 of 7
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Accretion-disc precession in UX Ursae Majoris
Miguel Agustino, Enrique de
; Patterson, Joseph (Oxford University Press, 2016)
We report the results of a long campaign of time-series photome try on the nova-like variable UX Ursae Majoris during 2015. It spanned 150 nights, with ~ 1800 h ours of coverage on 121 separate nights. ... -
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 ... -
IM Normae: The Death Spiral of a Cataclysmic Variable?
Patterson, Joseph; Miguel Agustino, Enrique de; Knigge, Christian (American Astronomical Society, 2022-01)
We present a study of the orbital light curves of the recurrent nova IM Normae since its 2002 outburst. The broad “eclipses” recur with a 2.46 hr period, which increases on a timescale of 1.28(16) × 106 yr. Under the ... -
SDSS J162520.29+120308.7 – a new SU Ursae Majoris star in the period gap
Olech, A.; Miguel Agustino, Enrique de; Otulakowska-Hypka, M.; Thorstensen, J. R.; Rutkowski, A.; Novak, R.; Masi, G.; Richmond, M.; Staels, B.; Lowther, S.; Stein, W.; Ak, T.; Boyd, David; Koff, Robert; Patterson, Joseph; Eker, Z. (European Southern Observatory, 2011)
We report results of an extensive world-wide observing campaign devoted to the recently discovered dwarf nova SDSS J162520.29+120308.7 (SDSS J1625). The data were obtained during the July 2010 eruption of the star and in ... -
Superhumps and spin-period variations in the intermediate polar RX J2133.7+5107
Miguel Agustino, Enrique de; Patterson, Joseph; Myers, J. (Oxford University Press, 2017)
We report the results of long-term time series photometry on RX J2133.7+5107, an intermediate polar distinguished by its long orbital period (7.14 h) and rapid rotation (571 s) of its white dwarf. The light curves show the ... -
The Periodic Signals of Nova V1674 Herculis (2021)
Patterson, Joseph; Miguel Agustino, Enrique de; Wood, Matt A. (American Astronomical Society, 2022)
We present time-series photometry during the early decline phase of the extremely fast nova V1674 Herculis. The 2021 light curve showed periodic signals at 0.152921(3) days and 501.486(5) s, which we interpret as respectively ... -
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 ...
