Results 1 to 10 of about 10,468 (212)

Spectroscopy of Nine Cataclysmic Variable Stars [PDF]

Publications of the Astronomical Society of the Pacific, 2007
We present optical spectroscopy of nine cataclysmic binary stars, mostly dwarf novae, obtained primarily to determine orbital periods Porb. The stars and their periods are LX And, 0.1509743(5) d; CZ Aql, 0.2005(6) d; LU Cam, 0.1499686(4) d; GZ Cnc, 0 ...
Ann B. Kapusta, Bruch A., Bruch A., Casares J., Christopher J. Peters, Cynthia J. Taylor, Dickinson R. J., Holly A. Sheets, Jenniskens P., Jiang X. J., John R. Thorstensen, Kato T., Marsh T. R., Robinson E. L., Uemura M., Warner B.   +15 more
core   +2 more sources

ABOUT THREE CATACLYSMIC VARIABLE STARS

Odessa Astronomical Publications, 2017
In order to detect the new outbursts of the three cataclysmic variable TV Crv, NSV 1775, NSV 895, their positions was scanned on the plates of the Odessa collection of the sky service obtained for the period 1958 - 1988. The new outbursts were detected
A. V. Klabukova
doaj   +2 more sources

Parallax and Distance Estimates for Twelve Cataclysmic Variable Stars [PDF]

The Astronomical Journal, 2008
We report parallax and distance estimates for twelve more cataclysmic binaries and related objects observed with the 2.4m Hiltner telescope at MDM Observatory. The final parallax accuracy is typically about 1 mas.
Araujo-Betancor, Bildsten, Bond, Diaz, Fu, Gänsicke, Hanson, Harrison, Harrison, Hoard, Howell, John R. Thorstensen, Kholopov, La Dous, Lépine, Michael Shara, Monet, Mukai, Pynchon, Ratering, Reid, Ringwald, Roelofs, Ruiz, Ruiz, Schlegel, Schmidt, Schmidt, Schwope, Szkody, Szkody, Szkody, Sébastien Lépine, Tapia, Thorstensen, Warner, Warner, Zacharias   +37 more
core   +5 more sources

DETERMINATION OF SIZE OF THE EMITTING REGION IN ECLIPSING CATACLYSMIC VARIABLE STARS

Odessa Astronomical Publications, 2014
The dependencies of the phase of eclipse of the white dwarf’s centre and the durations of the ascending and descending branches of the light curve on the binary system’s parameters were computed using the spherically symmetric approximation and the more ...
I. L. Andronov, K. D. Andrych
doaj   +3 more sources

Accretion in Cataclysmic Variable Stars [PDF]

, 2005
We consider accretion onto the white dwarfs in cataclysmic variables in relation to nova eruptions, dwarf nova outbursts, hibernation and non-radial oscillations.
Patrick A Woudt
exaly   +3 more sources

The absence of jets in cataclysmic variable stars [PDF]

Astronomy & 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 ...
Becker, Blandford, Bogovalov, Brocksopp, Cabrit, Crampton, De Villiers, Fender, Ferreira, Ferreira, Ferreira, Getman, Heyvaerts, Heyvaerts, Iijima, J.-P. Lasota, Knigge, Knigge, Li, Li, Livio, Livio, Motch, Murray, N. Soker, Nomoto, O'Brien, Pringle, Pringle, Proga, Quaintrell, Rogers, Seaton, Shahbaz, Shu, Shu, Soker, Southwell, Tomov, Torbett, Torbett, van den Heuvel   +41 more
core   +5 more sources

The winds in cataclysmic variable stars [PDF]

AIP Conference Proceedings, 1986
Ultraviolet spectrophotometry of two dwarf novae, CN Ori and RX And, at various phases of their outburst cycles, confirms that the far UV flux increases dramatically about 1–2 days after the optical outburst begins. At this time the UV spectral line profiles indicate the presence of a high velocity wind.
France A. Córdova, Edwin F. Ladd, Keith O. Mason   +2 more
exaly   +2 more sources

An X-Ray-dim “Isolated” Neutron Star in a Binary?

The Astrophysical Journal Letters, 2023
We report the discovery of a dark companion to 2MASS J15274848+3536572 with an orbital period of 6.14 hr. Combining the radial velocity from LAMOST observations and modeling of the multiband light curve, one obtains a mass function of ≃0.131 M _⊙ , an ...
Jie Lin, Chunqian Li, Weiyang Wang, Heng Xu, Jinchen Jiang, Daoye Yang, Shahidin Yaqup, Abdusamatjan Iskanda, Shuguo Ma, Hubiao Niu, Ali Esamdin, Shuai Liu, Gavin Ramsay, Jose I. Vines, Jianrong Shi, Renxin Xu   +15 more
doaj   +1 more source

VY Sculptoris stars as magnetic cataclysmic variables [PDF]

Astronomy & Astrophysics, 2002
AbstractWe show that VY Scl stars must be magnetized in order to account for the absence of outbursts during their low and intermediate states. Absence of outbursts during low states requires only rather low magnetic moments but in systems in which the drops and rises of luminosity are slower than it takes for the accretion disc to adjust viscously to ...
Hameury, J. -M., Lasota, J. -P.
openaire   +3 more sources

Galactic Model Parameters and Spatial Density of Cataclysmic Variables in the Gaia Era: New Constraints on Population Models

The Astronomical Journal, 2023
The spatial distribution, Galactic model parameters, and luminosity function of cataclysmic variables (CVs) are established using reestimated trigonometric parallaxes from Gaia DR3.
Remziye Canbay, Selçuk Bilir, Aykut Özdönmez, Tansel Ak   +3 more
doaj   +1 more source