Results 91 to 100 of about 2,620,915 (156)
EUVE J0854+390: a new Cataclysmic Variable [PDF]
, 2001 We report the identification of a new CV in the field of EUVE J0854+390. The optical spectra show Balmer, He I and He II lines strongly in emission and indicates the source is a CV, probably magnetic.Information Bulletin on Variable Stars 5032(1).
B. Roberts +3 more
core
On the orbital period distribution of cataclysmic variables
, 1998 Using the latest compilation of cataclysmic variable orbital periods by Ritter & Kolb we argue against Verbunt's conclusion that the period gap is not significant for nova-like variables.
C Hellier (7735418), T Naylor (7668551)
core +4 more sources
Resolving the Periods of the Asynchronous Polar 1RXS J083842.1–282723
The Astrophysical Journal1RXS J083842.1−282723 is a nearly synchronous magnetic cataclysmic variable with a simple X-ray light curve. While its orbital period was fairly well established at P _orb = 98.4 minutes from optical spectroscopy, indirect estimates of P _spin / P _orb ...
J. P. Halpern
doaj +1 more source
The Astrophysical JournalA recent development in the study of magnetic cataclysmic variable stars (mCVs) has been the identification of asynchronously spinning mCVs with orbital periods
Colin Littlefield +4 more
doaj +1 more source
RR Lyrae stars in the GCVS observed by the Qatar Exoplanet Survey [PDF]
, 2015 This publication was made possible by NPRP grant # X-019-1-006 from the Qatar National Research Fund (a member of Qatar Foundation). AAF is grateful to DGAPA-UNAM for grant number IN104612.We used the light curve archive of the Qatar Exoplanet Survey to ...
Bramich, Daniel Martyn +7 more
core +1 more source
The Eclipsing Novalike Cataclysmic Variable CRTS SSS100505 J093417-174421
The Astrophysical JournalTime-resolved optical photometry, complemented by Transiting Exoplanet Survey Satellite (TESS) data and long-term survey light curves, reveals that the transient object CRTS SSS100505 J093417-174421 is an eclipsing novalike cataclysmic variable of the VY
Raymundo Baptista +5 more
doaj +1 more source
The Long-term Activity of the Postnovae Q Cygni and BK Lyncis
The Astronomical JournalWe show the postnova activity of Q Cyg (Nova Cyg 1876) and BK Lyn (probable Nova Lyn 101). We use both CCD and photographic photometric observations.
Vojtěch Šimon
doaj +1 more source
The Photometric Study of EX Dra: A Dwarf Nova Exhibiting a Titled and Precessional Disk
The Astrophysical JournalWe present a photometric study of EX Dra, a dwarf nova that has been extensively observed by the Transiting Exoplanet Survey Satellite. The data reveal the occurrence of 20 complete outbursts, exhibiting several intriguing and rare characteristics.
Wei Liu +5 more
doaj +1 more source
Negative Superhumps in Cataclysmic Variables Driven by Retrograde Apsidal Disk Precession
The Astrophysical Journal LettersNegative superhumps (NSHs) are photometric modulations in cataclysmic variables with periods slightly shorter than the orbital period. They are usually attributed to retrograde nodal precession of a tilted accretion disk, although the origin and ...
David Vallet +3 more
doaj +1 more source
The Evolution of Cataclysmic Variables under Various Magnetic Braking Prescriptions
The Astrophysical JournalRecent studies have revealed discrepancies between observations and the predictions of the standard magnetic braking (MB). Although alternative models have been broadly discussed in neutron star binaries, they have not been systematically tested in ...
Wen-Shi Tang +4 more
doaj +1 more source