Results 61 to 70 of about 36,595 (260)

A Radial Velocity Study of CTCV J1300-3052 [PDF]

, 2012
We present time-resolved spectroscopy of the eclipsing, short period cataclysmic variable CTCV J1300-3052. Using absorption features from the secondary star, we determine the radial velocity semi-amplitude of the secondary star to be K2 = 378 \pm 6 km/s,
Bailey, Billington, C. D. J. Savoury, C. M. Copperwheat, Cook, Copperwheat, Copperwheat, D. Steeghs, Dhillon, Eggleton, Friend, Gizis, Hanuschik, Horne, Horne, Horne, Horne, Knigge, Knigge, Littlefair, Marsh, Marsh, Marsh, Marsh, Marsh, Marsh, Marsh, Patterson, Ritter, S. G. Parsons, S. P. Littlefair, Savoury, Smak, Smith, T. R. Marsh, Tappert, Thoroughgood, Thoroughgood, Tulloch, V. S. Dhillon, van Spaandonk, Vernet, Wade, Watson, Wood, Wood, Wood   +46 more
core   +3 more sources

Development of a Period Analysis Algorithm for Detecting Variable Stars in Time-Series Observational Data

Journal of Astronomy and Space Sciences, 2019
The purpose of this study was to develop a period analysis algorithm for detecting new variable stars in the time-series data observed by charge coupled device (CCD). We used the data from a variable star monitoring program of the CBNUO.
Kim, Dong-Heun, Kim, Yonggi, Yoon, Joh-Na, Im, Hong-Seo   +3 more
doaj   +1 more source

QU Carinae: Supernova Ia in the making? [PDF]

, 2012
Variable NaI absorption lines have been reported in a number of type Ia supernovae (SNeIa). The presence of this circumstellar material suggests that cataclysmic variables (CVs) with a giant donor star may be the progenitors of these SNeIa (Patat et al ...
Cowley, Drew, Gies, Gilliland, Guimarães, Hachisu, Hachisu, Hachisu, Iijima, Kafka, Linnell, Natta, Patat, Patat, Pojmanski, R. K. Honeycutt, R. Williams, Robertson, S. Kafka, Shore, Simon, Simon, Steiner, Sternberg, van den Heuvel, Vince, Williams, Šimon   +27 more
core   +2 more sources

Disc–magnetosphere interactions in cataclysmic variable stars [PDF]

Proceedings of the International Astronomical Union, 2007
AbstractI review, from an observational perspective, the interactions of accretion discs with magnetic fields in cataclysmic variable stars. I start with systems where the accretion flows via a stream, and discuss the circumstances in which the stream forms into an accretion disc, pointing to stars which are close to this transition.
openaire   +2 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
openaire   +1 more source

The donor star radial velocity curve in the cataclysmic variable GY Cnc confirms white dwarf eclipse modelling mass [PDF]

, 2023
S. P. Littlefair, P. Rodríguez-Gil, T. R. Marsh, S. G. Parsons, V. S. Dhillon   +4 more
openalex   +3 more sources

Investigation of the new cataclysmic variable 1RXS J180834.7+101041

, 2012
We present the results of our photometric and spectroscopic studies of the new eclipsing cataclysmic variable star 1RXS J180834.7+101041. Its spectrum exhibits double-peaked hydrogen and helium emission lines.
A. D. Schwope, A. M. Fridman, A. W. Shafter, B. L. Afanasiev, B. Paczynski, B. Warner, C. Hellier, C. Hellier, C. Knigge, C. Papadaki, D. G. Yakin, D. Steeghs, D. Steeghs, D. V. Bisikalo, E. Romero-Colmenero, G. A. Chanan, H. M. Boffin, I. F. Bikmaev, J. Bailey, J. K. Cannizzo, J. Patterson, J. Wood, K. Horne, M. F. Walker, M. R. Schreiber, N. I. Shakura, N. V. Borisov, P. P. Eggleton, P. Rodrigez-Gil, R. Baptista, R. C. Bohlin, R. K. Saito, R. Schwarz, S. B. Howell, V. F. Suleimanov, V. F. Suleimanov, V. L. Afanasiev, V. V. Neustroev, V. V. Neustroev, V. V. Shimanskii, V. V. Shimanskii, V. V. Shimanskii   +41 more
core   +1 more source

Accretion Discs in Cataclysmic Variable Stars [PDF]

International Astronomical Union Colloquium, 1997
AbstractAn overview is given of the spatial and time-dependent properties of the accretion discs in cataclysmic variable stars.
openaire   +1 more source

The K-band spectrum of the Cataclysmic Variable RXJ 0502.8+1624 (Tau 4)

, 2005
We present the K-band spectrum of the cataclysmic variable RXJ 0502.8+1624 (Tau 4). The spectrum shows a broad, smooth hump, with no absorption lines from the secondary star visible.
Buckley, Carpenter, E. L. Martín, Ferrario, Filippenko, Hoard, Howell, Kendall, Kolb, Leggett, Littlefair, McLean, Motch, S. P. Littlefair, V. S. Dhillon   +14 more
core   +1 more source

The stellar mass ratio of GK Persei [PDF]

, 2001
We study the absorption lines present in the spectra of the long-period cataclysmic variable GK Per during its quiescent state, which are associated with the secondary star.
Bleach, Campbell, Crampton, Dhillon, Drew, Eggleton, Evans, Friend, Gallagher, Georgelin, Gray, Griffin, Hoffleit, Horne, Houk, J.H. Wood, J.J. Lockley, Kaitchuck, Kraft, L. Morales-Rueda, M.D. Still, Marsh, Marsh, Mattei, Mattei, Morales-Rueda, Morales-Rueda, Nassau, Oke, P. Roche, Patterson, Reinsch, Roman, Sabbadin, Scargle, Schneider, Shafter, Skidmore, Smith, Southwell, Stone, Tonry, van Hamme, Yoss, Zhang   +44 more
core   +2 more sources