Results 31 to 40 of about 10,397 (194)

Accretion Discs in Cataclysmic Variable Stars [PDF]

open access: yesInternational Astronomical Union Colloquium, 1997
AbstractAn overview is given of the spatial and time-dependent properties of the accretion discs in cataclysmic variable stars.
openaire   +1 more source

Broad-band variability in accreting compact objects [PDF]

open access: yes, 2014
Cataclysmic variable stars are in many ways similar to X-ray binaries. Both types of systems possess an accretion disk, which in most cases can reach the surface (or event horizon) of the central compact object.
Scaringi, Simone
core   +5 more sources

Theoretical Light-curve Models of the Symbiotic Nova CN Cha—Optical Flat Peak for 3 Yr

open access: yesThe Astrophysical Journal, 2023
CN Cha is a slow symbiotic nova characterized by a 3 yr long optical flat peak followed by a rapid decline. We present theoretical light curves for CN Cha, based on hydrostatic approximation, and estimate the white-dwarf (WD) mass to be ∼0.6 M _☉ for a ...
Mariko Kato, Izumi Hachisu
doaj   +1 more source

K-band spectroscopy of pre-cataclysmic variables [PDF]

open access: yes, 2007
Aims. There exists now substantial evidence for abundance anomalies in a number of cataclysmic variables (CVs), indicating that the photosphere of the secondary star incorporates thermonuclear processed material. However, the spectral energy distribution
Ali   +47 more
core   +2 more sources

White Dwarfs in Cataclysmic Variable Stars: Surface Temperatures and Evolution [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2012
A summary is presented of what is currently known about the surface temperatures of accreting white dwarfs (WDs) detected in non-magnetic and magnetic cataclysmic variables (CVs) based upon synthetic spectral analyses of far ultraviolet data.
Edward M. Sion
doaj   +1 more source

Investigation of the new cataclysmic variable 1RXS J180834.7+101041

open access: yes, 2012
We present the results of our photometric and spectroscopic studies of the new eclipsing cataclysmic variable star 1RXS J180834.7+101041. Its spectrum exhibits double-peaked hydrogen and helium emission lines.
A. D. Schwope   +41 more
core   +1 more source

Discovery of a bright eclipsing cataclysmic variable [PDF]

open access: yes, 2007
We report on the discovery of J0644+3344, a bright deeply eclipsing cataclysmic variable (CV) binary. Spectral signatures of both binary components and an accretion disk can be seen at optical wavelengths.
Augusteijn   +21 more
core   +2 more sources

The Periods of Cataclysmic Variable Stars [PDF]

open access: yesInternational Astronomical Union Colloquium, 1983
To understand the structure and evolution of the cataclysmic variables, we will need accurate values for their masses, dimensions, mass transfer rates, and other physical properties. Unfortunately, despite an abundance of observational data on these systems, there is a severe dearth of reliable, quantitative information about their fundamental physical
openaire   +1 more source

LAMOST J2043+3413—a Fast Disk Precession SW Sextans Candidate in Period Gap

open access: yesThe Astronomical Journal, 2023
We present follow-up photometric observations and time-series analysis of a nova-like, SW Sextans-type, cataclysmic variable (CV) candidate, LAMOST J204305.95+341340.6 (hereafter J2043+3413), with a Gaia G -band magnitude of 15.30 and a distance of 990 ...
Xin Li   +7 more
doaj   +1 more source

On the orbital period of the cataclysmic variable RZ Leonis [PDF]

open access: yes, 2001
In this research note we present a time-resolved study of the Balmer emission lines of RZ Leo. From the analysis of the radial velocities we find an orbital period of 0.07651(26) d.
C. Tappert .,   +6 more
core   +2 more sources

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