Results 51 to 60 of about 36,595 (260)
The donor stars of cataclysmic variables [PDF]
Monthly Notices of the Royal Astronomical Society, 2006 Abstract We carefully consider observational and theoretical constraints on the global properties of secondary stars in cataclysmic variable stars (CVs). We then use these constraints to construct and test a complete, semi-empirical donor sequence for CVs with orbital periods Porb≤ 6 h.
openaire +3 more sources
Dynamical modelling of CXOGBS J175553.2−281633: a 10 h long orbital period cataclysmic variable [PDF]
Monthly notices of the Royal Astronomical Society, 2020 We present modelling of the long-term optical light and radial velocity curves of the binary stellar system CXOGBS J175553.2−281633, first detected in X-rays in the Chandra Galactic Bulge Survey.
S. Gomez +10 more
semanticscholar +1 more source
High spectral resolution time-resolved optical spectroscopy of V893 Sco [PDF]
, 2001 We present high resolution time-resolved optical spectra of the high inclination short orbital period dwarf nova V893 Sco. We performed spectral analysis through radial velocity measurements, Doppler mapping, and ratioed Doppler maps.
E. Mason +12 more
core +2 more sources
System parameters of three short-period cataclysmic variable stars [PDF]
Monthly Notices of the Royal Astronomical Society, 2021 ABSTRACT Using photometric ULTRACAM observations of three new short-period cataclysmic variables (CVs), we model the primary eclipse light curves to extract the orbital separation, masses, and radii of their component stars. We find donor masses of $0.060\pm 0.008\, {\rm M_\odot }$, $0.042\pm 0.001\, {\rm M_\odot }$, and $0.042\pm 0.004\,
J F Wild +11 more
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The cataclysmic variable orbital period gap: More evident than ever [PDF]
Astronomy & AstrophysicsRecently, large and homogeneous samples of cataclysmic variables identified by the Sloan Digital Sky Survey (SDSS) were published. In these samples, the famous orbital period gap, which is a dearth of systems in the orbital period range $ and the ...
M. Schreiber, D. Belloni, A. Schwope
semanticscholar +1 more source
Spectroscopy of Nine Cataclysmic Variable Stars [PDF]
Publications of the Astronomical Society of the Pacific, 2007 31 pages, 5 postscript and one PNG figure.
Sheets, H. A. +4 more
openaire +2 more sources
Late evolution of cataclysmic variables: the loss of AM Her systems [PDF]
, 1999 The white dwarf in AM Her systems is strongly magnetic and keeps in synchronous rotation with the orbit by magnetic coupling to the secondary star. As the latter evolves through mass loss to a cool, degenerate brown dwarf it can no longer sustain its own
Meyer, F., Meyer-Hofmeister, E.
core +3 more sources
Imaging the Secondary Stars in Cataclysmic Variables [PDF]
, 2001 The secondary, Roche-lobe filling stars in cataclysmic variables (CVs) are key to our understanding of the origin, evolution and behaviour of this class of interacting binary. We review the basic properties of the secondary stars in CVs and the observational and analysis methods required to detect them.
Dhillon, V.S., Watson, C.A.
openaire +3 more sources
Evolution and Outbursts of Cataclysmic Variables
Acta Polytechnica CTU Proceedings, 2015 Mass transfer and accretion are very important to understand the evolution and observational properties of cataclysmic variables (CVs). Due to the lack of an accretion disk, eclipsing profiles of polars are the best source to study the character of mass ...
S.-B. Qian +6 more
doaj +1 more source
SDSS J142625.71+575218.3: A Prototype for A New Class of Variable White Dwarf [PDF]
, 2008 We present the results of a search for pulsations in six of the recently discovered carbon-atmosphere white dwarf ("hot DQ") stars. On the basis of our theoretical calculations, the star SDSS J142625.71 + 575218.3 is the only object expected to pulsate ...
DeGennaro, Steven +5 more
core +1 more source