scholarly journals High-speed photometry of faint cataclysmic variables – VIII. Targets from the Catalina Real-Time Transient Survey

2013 ◽  
Vol 437 (1) ◽  
pp. 510-523 ◽  
Author(s):  
Deanne L. Coppejans ◽  
Patrick A. Woudt ◽  
Brian Warner ◽  
Elmar Körding ◽  
Sally A. Macfarlane ◽  
...  
Keyword(s):  
Real Time ◽  
High Speed ◽  
Cataclysmic Variables ◽  
High Speed Photometry

scholarly journals High-speed photometry of faint cataclysmic variables – IX. Targets from multiple transient surveys

2019 ◽  
Vol 486 (2) ◽  
pp. 2422-2434
Author(s):  
K Paterson ◽  
P A Woudt ◽  
B Warner ◽  
H Breytenbach ◽  
C K Gilligan ◽  
...  
Keyword(s):  
Real Time ◽  
High Speed ◽  
Cataclysmic Variables ◽  
Type Star ◽  
Photometric Observations ◽  
Sex Type ◽  
Two Systems ◽  
High Speed Photometry ◽  
Orbital Periods ◽  
Automated Search

Abstract We present high-speed photometric observations of 25 cataclysmic variables detected by the All Sky Automated Search for Super-Novae, the Mobile Astronomical System of the TElescope-Robot, and the Catalina Real-Time Transient Survey. From these observations we determine 16 new orbital periods and 1 new superhump period. Two systems (ASASSN-14ik and ASASSN-14ka) have outburst periods of approximately 1 month, with a third (ASASSN-14hv) having outbursts approximately every 2 months. Included in the sample are 11 eclipsing systems, one probable intermediate polar (ASASSN-15fm), 1 SW Sex-type star (MLS 0720+17), 1 WZ Sge-type star (ASASSN-17fz), and one system showing different photometric and spectroscopic periods (ASASSN-15kw).

High speed photometry of faint Cataclysmic Variables: A progress report

2012 ◽  
Vol 8 (S290) ◽  
pp. 339-340
Author(s):  
B. Warner ◽  
P. Woudt
Keyword(s):  
Real Time ◽  
Orbital Period ◽  
High Speed ◽  
Cataclysmic Variables ◽  
Progress Report ◽  
High Speed Photometry

AbstractWe summarise the results of observing faint cataclysmic variables from the Catalina Real-Time Transient Survey, resulting in confirming the theoretically predicted maximum in the orbital period histogram near a period of 80 minutes.

scholarly journals High Speed Photometry of AM CVns with the UCT CCD

2004 ◽  
Vol 194 ◽  
pp. 120-121
Author(s):  
Patrick A. Woudt ◽  
Brian Warner
Keyword(s):  
Orbital Period ◽  
High Speed ◽  
Alternative Explanation ◽  
Cataclysmic Variables ◽  
High Speed Photometry

AbstractFollowing our high speed photometric survey of faint cataclysmic variables, two CVs were recognised to be helium-transferring double degenerates; these are ES Cet (Рorb – 620.21144 s) and 2003aw (Psh= 2041.5 s). We have now observed ES Cet photometrically for over two years in order to follow the evolution of the orbital period. We oiler an alternative; explanation for the nature of V407 Vul (which was classified as an ultra-compact together with RX J0806 and ES Cet); this will take V407 Vul out of the AM CVn classification.

Two-channel Photometry of Cataclysmic Variables

1991 ◽  
Vol 9 (2) ◽  
pp. 302-303
Author(s):  
Denis J. Sullivan
Keyword(s):  
New Zealand ◽  
Light Curve ◽  
High Speed ◽  
Cataclysmic Variables ◽  
The Other ◽  
Comparison Star ◽  
Photometric System ◽  
High Speed Photometry

AbstractHigh-speed photometry of two cataclysmic variables is presented. The observations were made using a two-channel photometric system and the Mt John 0.6 or 1-m telescopes at Lake Tekapo in New Zealand. Both objects have only recently been identified as cataclysmic variables. One of the objects is a high inclination system featuring a deep eclipse in the light curve and a 5.5 hour period, while the other object, despite being relatively faint, clearly exhibits a 2.5 hour period and out of eclipse variability. Simultaneous monitoring of a nearby comparison star for this latter object was particularly beneficial, even during good photometric conditions.

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