Results 91 to 100 of about 3,407,558 (216)

A radial velocity study of CTCV J1300−3052 [PDF]

, 2012
We present time-resolved spectroscopy of the eclipsing, short-period cataclysmic variable CTCV J1300−3052. Using absorption features from the secondary star, we determine the radial velocity semi-amplitude of the secondary star to be K2= 378 ± 6 km s−1 ...
Parsons, S. G., Copperwheat, C. M., Steeghs, D., Savoury, C. D. J., Littlefair, S. P., Marsh, T. R., Dhillon, V. S.   +6 more
core   +1 more source

Discovering Cataclysmic Variables from the Rubin Observatory LSST

The Astrophysical Journal Supplement Series
The Vera C. Rubin Observatory’s Legacy Survey of Space and Time (LSST) will provide a windfall of new transients and variable sources. Here we have performed mock observation simulations to understand LSST’s expected detection rates for cataclysmic ...
D. A. H. Buckley, Y. Tampo, P. Szkody, M. Motsoaledi, S. Scaringi, M. Lochner, N. Rawat, J. P. Marais, B. van Soelen, S. Macfarlane, A. van Dyk   +10 more
doaj   +1 more source

New Observations of the Old Magnetic Nova GQ Muscae

Open Astronomy, 2014
Photometric observations of GQ Mus performed between 1992 and 2011 are reported. We find that the total amplitude of the orbital modulation of its brightness decreased from ~ 0.9 mag in 1992 to ~ 0.2 mag in 2010, becoming comparable to the amplitude of ...
Narloch W., Kaluzny J., Krzeminski W., Pych W., Rozyczka M., Shectman S., Thompson I. B., Tomov T.   +7 more
doaj   +1 more source

Preface to the Special Collection “Are There Scientific Revolutionaries? Scientific, Historical, and Philosophical Perspectives”

Natural Sciences, Volume 6, Issue 3, July 2026.
Ute Deichmann, Bretislav Friedrich
wiley   +1 more source

Cataclysmic variables below the period gap : mass determinations of 14 eclipsing systems [PDF]

, 2011
We present high-speed, three-colour photometry of the eclipsing cataclysmic variables CTCV J1300-3052, CTCV J2354-4700 and SDSS J115207.00+404947.8. These systems have orbital periods of 128.07, 94.39 and 97.52 minutes respectively, placing all three ...
Copperwheat, C.M., Savoury, C. D. J., S. G. Parsons, Dhillon, V. S., Hickman, R. D. G. (Richard D. G.), Gänsicke, B. T. (Boris T.), P. Kerry, T. R. Marsh, Dhillon, V.S., R. D. G. Hickman, Littlefair, S. P., Marsh, T. R., Savoury, C.D.J., V. S. Dhillon, Copperwheat, C. M., Littlefair, S.P., Parsons, S. G., C. M. Copperwheat, Gänsicke, B.T., Hickman, R.D.G., Parsons, S.G., C. D. J. Savoury, Marsh, T.R., B. T. Gänsicke, S. P. Littlefair, Kerry, P.   +25 more
core   +1 more source

Temporary Equilibrium Mass Transfer Rate in Cataclysmic Variables?

The Astrophysical Journal
The separation of a binary system increases or decreases over time, governed by angular momentum (AM) changes. In cataclysmic variables (CVs), Roche-lobe overflow from the red dwarf (RD) to the white dwarf (WD) redistributes AM within the system through ...
Yael Hillman
doaj   +1 more source

Early Photometric and Spectral Evolution of Nova Cygni 2014 (V2659 Cyg)

Open Astronomy, 2015
We present optical spectroscopic and UBV (RI)C photometric observations of Nova Cygni 2014 (V2659 Cyg) from its rebrightening to the nebular stage. After the first maximum, the nova underwent several irregular flare-like rebrightenings, with amplitudes ...
Burlak M. A., Esipov V. F., Komissarova G. V.   +2 more
doaj   +1 more source

Optical polarimetry of cataclysmic variables

, 2022
It is briefly revised the literature relative to optical polarimetric measurements of cataclysmic variables (CVs). It is also discussed how polarization can be used to estimate important properties of those objects as the white-dwarf magnetic field, mass
Vilega Rodrigues, Claudia
core   +1 more source

Cyclical Period Changes in Cataclysmic Variables: A Statistical Study

The Astrophysical Journal
We report the results of a statistical study of cyclical period changes in cataclysmic variables (CVs). Assuming the third-body hypothesis as the cause of period changes, we estimate the third-body mass, m _3 , and its separation from the binary, a _3 ...
Leandro Souza, Raymundo Baptista
doaj   +1 more source

Discovery of two new faint cataclysmic variables

, 2002
We report on the discovery of two new faint cataclysmic variables. The objects were selected as candidates from two different imaging surveys aimed at the discovery of such faint systems. One survey used color and variability while the other used color
R. Clowes, E. Mason, M. Huber, S. B. Howell   +3 more
core   +1 more source