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I performed photometric observations of the poorly studied cataclysmic variable IPHAS J013031.89+622132.3 and discovered very deep eclipses. I obtained observations over 14 nights for a total time of 50 hours during a time span of 6 months.…

Solar and Stellar Astrophysics · Physics 2019-12-18 V. P. Kozhevnikov

I performed photometric observations of the cataclysmic variable candidate ZTF17aaaeefu and discovered very deep eclipses. The observations were obtained over 8 nights covering 7 months. The eclipse profile is similar to the eclipse…

Solar and Stellar Astrophysics · Physics 2021-11-29 V. P. Kozhevnikov

Performing the photometric observations of the cataclysmic variable IPHAS J051814.33+294113.0, we discovered very deep eclipses. The observations were obtained over 14 nights, had a total duration of 56 hours and covered one year. The large…

Solar and Stellar Astrophysics · Physics 2018-06-13 V. P. Kozhevnikov

We present the results obtained from unfiltered photometric CCD observations of the newly discovered cataclysmic variable SDSS J040714.78-064425.1 made during 7 nights in November 2003. We establish the dwarf nova nature of the object as it…

Astrophysics · Physics 2009-11-10 T. Ak , A. Retter , A. Liu , H. H. Esenoglu

Continuing our work from Paper I (Southworth et al., 2006) we present medium-resolution spectroscopy and broad-band photometry of seven cataclysmic variables (CVs) discovered by the SDSS. For six of these objects we derive accurate orbital…

We report the discovery of an eclipsing cataclysmic variable with eclipse depths > 5.7 mag, orbital period 94.657 min, and peak brightness V~18 at J2000 position 17h 25m 54s.8, -64d 38' 39". Detected by visual inspection of images from Yale…

We report the discovery of eclipses and the first orbital period measurements for four cataclysmic variables, plus the first orbital period measurements for one known eclipsing and two magnetic systems. SDSS J093537.46+161950.8 exhibits…

Solar and Stellar Astrophysics · Physics 2015-06-23 John Southworth , C. Tappert , B. T. Gaensicke , C. M. Copperwheat

We report follow-up observations of five cataclysmic variable candidates from LAMOST published by Hou et al. (2020). LAMOST J024048.51+195226.9 is the most unusual of the five; an early-M type secondary star contributes strongly to its…

Solar and Stellar Astrophysics · Physics 2020-09-09 John R. Thorstensen

We present time resolved photometry of the cataclysmic variable SDSS J081610.84+453010.2 and have established for the first time that it is an eclipsing dwarf nova. We observed an outburst of the system which lasted about 11 days and had an…

Solar and Stellar Astrophysics · Physics 2011-04-04 Jeremy Shears , Steve Brady , Tut Campbell , Arne Henden , Enrique de Miguel , Etienne Morelle , George Roberts , Richard Sabo , Ian Miller

We present photometry of nine cataclysmic variable stars identified by the Sloan Digital Sky Survey, aimed at measuring the orbital periods of these systems. Four of these objects show deep eclipses, from which we measure their orbital…

Solar and Stellar Astrophysics · Physics 2015-05-14 John Southworth , C. M. Copperwheat , B T Gansicke , S Pyrzas

MASTER OT J190519.41+301524.4 was discovered as an optical transient of 15.7m by the Mobile Astronomical System of TElescope-Robots in March 2014. We report the results of photometric observations of this variable performed at Lajatico…

Solar and Stellar Astrophysics · Physics 2016-09-30 F. Martinelli , D. V. Denisenko

We present optical photometry and spectroscopy of the new eclipsing Cataclysmic Variable MASTER OTJ192328.22+612413.5, discovered by the MASTER team. We find the orbital period to be P=0.16764612(5) day /4.023507(1) hour. The depth of the…

Solar and Stellar Astrophysics · Physics 2016-07-13 M. R. Kennedy , P. Callanan , P. M. Garnavich , P. Szkody , S. Bounane , B. M. Rose , P. Bendjoya , L. Abe , J. P. Rivet , O. Suarez

As part of a project to better characterize comparatively bright, yet little studied cataclysmic variables time resolved photometry of the three eclipsing novalike variables EC 21178-5417, GS Pav und V345 Pav is presented. Previously known…

Solar and Stellar Astrophysics · Physics 2017-05-03 Albert Bruch

We present the nine-year light curve of the cataclysmic variable 1RXS J140429.5+172352 from 2005 April to 2014 July. We identified four dwarf nova-like outbursts, which typically lasted 3 to 5 days, with an amplitude of 3.1 to 5.3…

Solar and Stellar Astrophysics · Physics 2014-12-17 Jeremy Shears , Pavol Dubovsky , Colin Littlefield , Ian Miller , Etienne Morelle , Roger Pickard , Javier Ruiz , Richard Sabo

We present optical photometric and spectroscopic observations of two Cataclysmic Variables (CVs), namely RBS 0490 and SDSS J075939.79+191417.3. The optical variations of RBS 0490 have been found to occur at the period of 1.689$\pm$0.001 hr…

Solar and Stellar Astrophysics · Physics 2022-04-27 Arti Joshi , J. C. Pandey , Nikita Rawat , Ashish Raj , Wei Wang , H. P. Singh

PHL 1445 is found to be an eclipsing cataclysmic variable with an orbital period of 76.3 minutes. GALEX J003535.7+462353 is a new eclipsing dwarf nova with an orbital period of 4.13 hours. Both objects show deep eclipses with an amplitude…

Solar and Stellar Astrophysics · Physics 2011-03-31 Patrick Wils , Tom Krajci , Franz-Josef Hambsch , Eddy Muyllaert

We present VLT and Magellan spectroscopy and NTT photometry of nine faint cataclysmic variables (CVs) which were spectroscopically identified by the SDSS. We measure orbital periods for five of these from the velocity variations of the…

The cataclysmic variable SDSS154453+2553 was recently identified in the Sloan Digital Sky Survey. We obtained spectra and photometry at the MDM Observatory, which revealed an eclipse with a 6.03 hour period. The H{\alpha} emission line…

Solar and Stellar Astrophysics · Physics 2014-09-09 Julie N. Skinner , John R. Thorstensen , Eve Armstrong , Steve Brady

We present time-resolved spectroscopy and photometry of SDSS J100658.40+233724.4, which we have discovered to be an eclipsing cataclysmic variable with an orbital period of 0.18591324 days (267.71507 min). The observed velocity amplitude of…

Solar and Stellar Astrophysics · Physics 2015-05-14 John Southworth , R. D. G. Hickman , T. R. Marsh , A. Rebassa-Mansergas , B. T. Gansicke , C. M. Copperwheat , P. Rodriguez-Gil

We present time-resolved photometry of six faint (V>17mag) cataclysmic variables (CVs); one of them is V849 Oph and the others are identified from the Sloan Digital Sky Survey (SDSS J0920+0042, SDSS J1327+6528, SDSS J1227+5139, SDSS…

Solar and Stellar Astrophysics · Physics 2015-05-19 Dicle Zengin Çamurdan , Cafer İbanoğlu , C. Muzaffer Çamurdan
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