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Spectra of the magnetic white dwarf binary AM Her were obtained with the Far Ultraviolet Spectroscopic Explorer (FUSE) during three consecutive spacecraft orbits. These observations were split into 19 spectra of about 5 min duration (0.025P…

Astrophysics · Physics 2007-05-23 J. B. Hutchings , A. W. Fullerton , A. P. Cowley , P. C. Schmidtke

We present far-UV spectra of the three magnetic cataclysmic variables (MCVs) BY Cam, V1309 Ori and AE Aqr obtained with the FUSE satellite. These MCVs have revealed strongly unusual NV and CIV UV resonance lines. The FUSE spectra exhibit…

Using ORFEUS-SPAS II FUV spectra, IUE UV spectra, and archival EUVE deep survey photometry, we present a detailed picture of the behavior of the magnetic cataclysmic variable EX Hydrae. Like HUT spectra of this source, the FUV and UV…

Astrophysics · Physics 2009-10-31 Christopher W. Mauche

We present far-ultraviolet (905 -- 1182 A), time-series spectroscopy of the eclipsing, novalike cataclysmic variable, UX UMa, acquired with FUSE. The time-averaged spectrum is complex and is dominated by overlapping spectral features. The…

Astrophysics · Physics 2009-11-07 C. S. Froning , K. S. Long , C. Knigge

We focus on short--period eclipsing binaries that belong to a class of Cataclysmic Variables (CVs). They are known as polars and intermediate polars, closely resembling their prototype AM Herculis. These binaries consist of a red dwarf and…

Earth and Planetary Astrophysics · Physics 2014-03-20 Aga Słowikowska , Krzysztof Goździewski , Ilham Nasiroglu , Gottfried Kanbach , Arne Rau , Krzysztof Krzeszowski

We present the results of photometric CCD observations of the magnetic cataclysmic variable V405 Aurigae (RX J0558.0+5353 = 1RXS J055800.7+535358) obtained using different instruments. We analysed variability of the spin period of the white…

Using a recent Chandra ACIS observation of the eclipsing cataclysmic variable (CV) V1460 Her (2MASS J16211735+4412541) with a fast-rotating ($P_{\rm spin} = 38.9$~s) white dwarf, we estimated a flux $F_{0.5-7 {\rm keV}}^{\rm abs} = (1.9\pm…

Solar and Stellar Astrophysics · Physics 2025-01-08 Erik B. Monson , George G. Pavlov , Gordon P. Garmire

Six high-resolution (\lambda/\Delta\lambda ~ 3000) far-UV (\lambda\lambda = 910-1210 \AA) spectra of the magnetic cataclysmic variable AM Herculis were acquired in 1996 November during the flight of the ORFEUS-SPAS II mission. AM Her was in…

Astrophysics · Physics 2009-10-30 Christopher W. Mauche , John C. Raymond

We present preliminary results of long-term monitoring of the peculiar cataclysmic variable FS Aurigae conducted during the 2010-2011 observational season. The multicolor observations revealed, for the first time in photometric data, the…

Solar and Stellar Astrophysics · Physics 2011-11-29 V. Neustroev , G. Tovmassian , S. Zharikov , G. Sjoberg , T. Arranz Heras , P. B. Lake , D. Lane , G. Lubcke , A. A. Henden

We present a synthetic spectral analysis of Far Ultraviolet Spectroscopic Explorer (FUSE) and Hubble Space Telescope/Space Telescope Imaging Spectrograph (HST/STIS) spectra of 5 dwarf novae above and below the period gap during quiescence.…

Astrophysics · Physics 2009-11-13 P. Godon , E. M. Sion , P. E. Barrett , I. Hubeny , A. P. Linnell , P. Szkody

We present here results of numerical calculations demonstrating that the very long periodic variability detected in the Cataclysmic Variable FS Aur can be the result of eccentricity modulation of a close binary (CB) orbit induced by the…

Solar and Stellar Astrophysics · Physics 2010-09-30 G. Tovmassian , S. Zharikov , C. Chavez , L. Aguilar , J. Tomsick , V. Hambaryan , V. Neustroev

Context. The origin, evolution, and ultimate fate of magnetic cataclysmic variables are poorly understood. It is largely the nature of the magnetic fields in these systems that leads to this poor understanding. Fundamental properties, such…

Astrophysics of Galaxies · Physics 2009-11-13 O. W. Butters , S. Katajainen , A. J. Norton , H. J. Lehto , V. Piirola

During its lifetime, the Far Ultraviolet Spectroscopic Explorer (FUSE) was used to observe 99 cataclysmic variables in 211 separate observations. Here, we present a survey of the moderate resolution (R\simeq10,000), far-ultraviolet (905 -…

Astrophysics of Galaxies · Physics 2015-06-03 C. S. Froning , K. S. Long , B. Gaensicke , P. Szkody

The magnetic cataclysmic variable DQ Herculis was observed with the Faint Object Spectrograph onboard the Hubble Space Telescope (HST) over four consecutive satellite orbits, including the first observation in the UV of DQ Her through…

Astrophysics · Physics 2009-10-28 Andrew D. Silber , Scott F. Anderson , Bruce Margon , Ronald A. Downes

Our simultaneous multicolor (UBVRI) circular polarimetry has revealed nearly sinusoidal variation over the WD spin cycle, and almost symmetric positive and negative polarization excursions. Maximum amplitudes are observed in the B and V…

Astrophysics · Physics 2009-11-13 V. Piirola , T. Vornanen , A. Berdyugin , G. V. Coyne

We have obtained spectroscopy with the Far Ultraviolet Spectroscopic Explorer (FUSE) of the supersoft X-ray binary RX J0513.9-6951 over a complete binary orbital cycle. The spectra show a hot continuum with extremely broad O VI emission and…

Astrophysics · Physics 2009-11-07 J. B. Hutchings , K. Winter , D. Crampton , A. P. Cowley , P. C. Schmidtke

We report time-series photometry of the quiescent optical counterpart of the EUV transient RE J1255+266. The star appears as a DA white dwarf with bright emission lines and a complex spectrum of periodic signals in its light curve. A signal…

Astrophysics · Physics 2009-11-10 Joseph Patterson , John Thorstensen , Jonathan Kemp

The eclipsing binary epsilon Aur is unique in being a very long-period binary involving an evolved, variable F star and a suspected B main-sequence star enshrouded in an opaque circumstellar disk. The geometrical arrangement is that the…

Solar and Stellar Astrophysics · Physics 2021-08-25 Richard Ignace , Gary Henson , Hilding Neilson , William Asbury

Using the Hopkins Ultraviolet Telescope (HUT), we have obtained 850-1850 angstrom spectra of the magnetic cataclysmic variable star AM Her in the high state. These observations provide high time resolution spectra of AM Her in the FUV and…

Astrophysics · Physics 2009-10-31 Bradford W. Greeley , William P. Blair , Knox S. Long , John C. Raymond

The magnetic cataclysmic variable AE Aquarii hosts a rapidly rotating white dwarf which is thought to expel most of the material streaming onto it. Observations of AE Aqr have been obtained in the wavelength range of 5 - 70 microns with the…

Astrophysics · Physics 2011-02-11 G. Dubus , R. E. Taam , C. Hull , D. M. Watson , J. C. Mauerhan
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