Results 1 to 10 of about 36,595 (260)

ASASSN-18aan: An eclipsing SU UMa-type cataclysmic variable with a 3.6-hr orbital period and a late G-type secondary star [PDF]

open access: green, 2021
We report photometric and spectroscopic observations of the eclipsing SU UMa-type dwarf nova ASASSN-18aan. We observed the 2018 superoutburst with 2.3 mag brightening and found the orbital period (Porb) to be 0.149454(3) d, or 3.59 hr.
Yasuyuki Wakamatsu   +43 more
openalex   +3 more sources

Gas flow in cataclysmic variable stars

open access: yesThe Astrophysical Journal, 1975
A numerical hydrodynamic scheme, applicable to gas flow in binary stars, is presented which incorporates the effects of pressure and gravitational forces, radiative cooling, and shock formation. The method is used to study gas flow originating from Roche lobe overflow through the inner Lagrangian point, L$sub 1$, in a binary star modeled to resemble ...
openaire   +1 more source

Rapid Change in the Orbital Period of the Remnant of Nova Scorpii AD 1437 (IGR J17014-4306)

open access: yesThe Astrophysical Journal
IGR J17014-4306 is the longest orbital period (12.8 hr) deep-eclipsing intermediate polar known, where a massive white dwarf (WD) accretes matter from its companion star via an accretion disk.
Lei Zang   +7 more
doaj   +1 more source

Reevaluating the Origin of Detectable Cataclysmic Variables in Globular Clusters: Testing the Importance of Dynamics

open access: yesThe Astrophysical Journal Letters
Based on the current detectable cataclysmic variable (CV) population in Galactic globular clusters (GCs), we show that there is not a clear relation between the number of sources per unit of mass and the stellar encounter rate, the cluster mass, or the ...
Liliana Rivera Sandoval   +2 more
doaj   +1 more source

A spectrophotometric survey of cataclysmic variable stars

open access: yesThe Astronomical Journal, 1982
A sample of dwarf novae and other cataclysmic variable stars were observed using the multichannel spectrophotometer on the 5-m Hale reflector. A preliminary qualitative description of the continuum distributions is given and a discussion of the Balmer emission-line fluxes is made.
J. B. Oke, R. A. Wade
openaire   +1 more source

Photometry of the SW Sex-type nova-like BH Lyncis in high state

open access: yes, 2006
Aims: We present a photometric study of the deeply eclipsing SW Sex-type nova-like cataclysmic variable star BH Lyn Methods: Time-resolved V-band CCD photometry was obtained for seven nights between 1999 and 2004.
Bonnet-Bidaud   +21 more
core   +1 more source

The absence of jets in cataclysmic variable stars [PDF]

open access: yesAstronomy & Astrophysics, 2004
We show that the recently developed thermal model which successfully describes how jets are launched by young stellar objects, when applied to system containing disk-accreting white dwarfs naturally explain the otherwise surprising absence of jets in cataclysmic variable stars.
Soker, N., Lasota, J. -P.
openaire   +3 more sources

Pulsation Mode Identification and Classification of 46 High-amplitude δ Scuti Stars from 50 Candidates with TESS Observations

open access: yesThe Astrophysical Journal
Asteroseismic modeling of high-amplitude δ Scuti (HADS) variables critically depends on their accurate classification, which provides robust constraints on stellar physical parameters.
Taozhi Yang, Zhaoyu Zuo
doaj   +1 more source

Weighing The Options: The Unseen Companion in LAMOST J2354 is Likely a Massive White Dwarf

open access: yesThe Open Journal of Astrophysics
LAMOST J235456.73+335625 (J2354) is a binary system hosting a $\sim 0.7~\rm M_\odot$ K dwarf and a $\sim 1.4~\rm M_\odot$ dark companion, supposedly a neutron star, in a 0.48d orbit.
Michael A Tucker   +3 more
doaj   +1 more source

Identification of new cataclysmic variables in the 1RXS and USNO-B1.0 catalogs

open access: yes, 2010
As a result of applying the original optical variability search method on publicly available data, we have found eight new cataclysmic variables and two possible Optically Violent Variable quasars among the previously unidentified X-ray sources in the ...
A. J. Drake   +19 more
core   +1 more source

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