Results 11 to 20 of about 36,595 (260)
On the eclipsing cataclysmic variable star HBHA 4705-03 [PDF]
, 2013 We present observations and analysis of a new eclipsing binary HBHA 4705-03. Using decomposition of the light curve into accretion disk and hot spot components, we estimated photometrically the mass ratio of the studied system to be q=0.62 +-0.07.
Ak, T. +3 more
core +8 more sources
A new cataclysmic variable star [PDF]
Publications of the Astronomical Society of the Pacific, 1992 We report spectrophotometric observation of a new cataclysmic variable star J 05.23, discovered as a byproduct of the Calan-Tololo Survey of quasars and Seyfert galaxies. From the ESO Quick Blue Chart we estimated a B magnitude of 17.5. The spectrum between 3200 and 6500 angstroms shows strong emission in the He I lambda-5876 angstroms, HBeta, HGamma ...
J. Maza +3 more
semanticscholar +3 more sources
Photometric Analysis of the Cataclysmic Variable Star LT Eri
The Astronomical JournalLT Eri is a long-period eclipsing cataclysmic variable star (CV). This study investigates its outbursts, negative superhumps (NSHs), tilted-disk precession, eclipse-depth variations, and observed minus calculated ( O – C ) behavior, using photometric ...
Qi-Bin Sun +6 more
doaj +3 more sources
Analysis of cataclysmic variable star energy distributions
The Astronomical Journal, 1982 I analyze spectrophotometry of cataclysmic variable stars covering the wavelength range 0.32--1.1 ..mu..m. The contributions due to the cool secondary star and the accretion disk are separated, subject to the requirement that the spectrum attributed to the accretion disk be ''physically plausible.'' The results for individual stars, which are largely ...
R. A. Wade
semanticscholar +3 more sources
SDSS J134441.83+204408.3: A Highly Asynchronous Short-period Magnetic Cataclysmic Variable with a 56 MG Field Strength [PDF]
The Astrophysical Journal Letters, 2023 When the accreting white dwarf in a magnetic cataclysmic variable star (mCV) has a field strength in excess of 10 MG, it is expected to synchronize its rotational frequency to the binary orbit frequency, particularly at small binary separations, due to ...
Colin Littlefield +8 more
doaj +2 more sources
Identification of Orbital Eclipses in LAMOST J024048.51+195226.9, a Candidate AE Aqr-type Cataclysmic Variable Star [PDF]
Research Notes of the AAS, 2020 AE Aqr objects are a class of cataclysmic variable stars in which the rapidly rotating magnetosphere of the white dwarf (WD) primary centrifugally expels most infalling gas before it can accrete onto the WD.
Colin Littlefield, P. Garnavich
semanticscholar +5 more sources
Irradiation of the secondary star in cataclysmic variables [PDF]
Monthly Notices of the Royal Astronomical Society, 1992 It is shown how the relative strength of the Na I doublet over the surface of the secondary star can be calculated from radial velocity curves obtained using the Na I absorption feature around 8190 A. The results for 11 dwarf novae and one magnetic cataclysmic binary system are presented.
Stephen Davey, Randall Smith
openalex +2 more sources
Nine New Cataclysmic Variable Stars with Negative Superhumps [PDF]
The Astrophysical Journal, 2023 Negative superhumps (NSHs) are signals a few percent shorter than the orbital period of a binary star and are considered to originate from the reverse precession of the tilted disk.
Qi-Bin Sun +7 more
doaj +2 more sources
Irradiation of the companion star in cataclysmic variables [PDF]
Monthly Notices of the Royal Astronomical Society, 1989 Il est demontre que le rayonnement de l'ecoulement d'accretion au niveau de la naine blanche dans une binaire cataclysmique est incapable de penetrer la photosphere du compagnon. Le rayonnement peut, dans quelques cas, ioniser l'ecoulement d'accretion subsonique juste en dessous du point de Lagrange ...
A. R. King
openalex +2 more sources
HW Bootis: an enigmatic cataclysmic variable star [PDF]
, 2014 14 pages, 5 Figures.
Jeremy Shears +8 more
openalex +3 more sources