English
Related papers

Related papers: A Far Ultraviolet Study of the Nova-like V794 Aqui…

200 papers

We have carried out a combined Hubble Space Telescope (HST/GHRS) and Far Ultraviolet Spectroscopic Explorer FUSE) analysis of the prototype dwarf nova SS Cygni during quiescence. The FUSE and HST spectra were obtained at comparable times…

Solar and Stellar Astrophysics · Physics 2015-05-19 Edward Sion , Patrick Godon , Janine Myzcka , William Blair

We explore the origin of FUSE and HST STIS far UV spectra of the dwarf nova, EY Cyg, during its quiescence using \emph{combined} high gravity photosphere and accretion disk models as well as model accretion belts. The best-fitting single…

Astrophysics · Physics 2009-11-10 E. M. Sion , L. Winter , J. A. Urban , G. H. Tovmassian , S. Zharikov , B. T. Gaensicke , M. Orio

We present an analysis of the FUSE spectra of eight high-declination dwarf novae obtained from a Cycle 7 FUSE survey. These DN systems have not been previously studied in the UV and little is known about their white dwarfs (WDs) or…

Solar and Stellar Astrophysics · Physics 2009-08-05 P. Godon , E. M. Sion , P. E. Barrett , P. Szkody

We apply a conventional accretion disk model to the FU Ori-type objects HBC 722 and Gaia 17bpi. Our base model is a steady-state, thin Keplerian disk featuring a modified Shakura-Sunyaev temperature profile, with each annulus radiating as…

Solar and Stellar Astrophysics · Physics 2022-03-14 Antonio C. Rodriguez , Lynne A. Hillenbrand

We have obtained FUSE and HST/STIS time-resolved spectroscopy of the polar AM Herculis during a deep low state. The spectra are entirely dominated by the emission of the white dwarf. Both the far-ultraviolet (FUV) flux as well as the…

Astrophysics · Physics 2009-11-11 B. T. Gaensicke , K. S. Long , M. A. Barstow , I. Hubeny

We present a systemic analysis of all of the stellar mass black hole binaries (confirmed & candidate) observed by the Swift observatory up to June 2010. The broad Swift bandpass enables a trace of disk evolution over an unprecedented range…

High Energy Astrophysical Phenomena · Physics 2015-06-03 Mark Reynolds , Jon Miller

We carry out a spectral analysis of the archival FUSE spectrum of the VY Scl nova-like cataclysmic variable MV Lyrae obtained in the high state. We find that standard disk models fail to fit the flux in the shorter wavelengths of FUSE (<…

Solar and Stellar Astrophysics · Physics 2011-07-26 P. Godon , E. M. Sion

We present a 904-1183 A spectrum of the dwarf nova VW Hydri taken with the Far Ultraviolet Spectroscopic Explorer during quiescence, eleven days after a normal outburst, when the underlying white dwarf accreter is clearly exposed in the far…

We have analyzed the Far Ultraviolet Spectrocopic Explorer (FUSE) spectra of two U Gem-Type dwarf novae, SS Aur and RU Peg, observed 28 days and 60 days (respectively) after their last outburst. In both systems the FUSE spectra (905 - 1182…

Astrophysics · Physics 2009-11-10 E. M. Sion , F. Cheng , P. Godon , P. Szkody

We have obtained Far Ultraviolet Spectroscopic Explorer (905-1187 Angstrom) spectra of the non-magnetic cataclysmic variable Z Cam during a period of quiescence. The spectrum resembles that of a hot (57,000 K) metal-enriched white dwarf. A…

Astrophysics · Physics 2009-11-10 Louise Hartley , Knox S. Long , Cynthia S. Froning , Janet E Drew

We present results from spectral modeling of three black hole X-ray binaries: LMC X-3, GRO J1655-40, and XTE J1550-564. Using a sample of disk dominated observations, we fit the data with a range of spectral models that includes a simple…

Astrophysics · Physics 2008-11-26 Shane W. Davis , Chris Done , Omer M. Blaes

We present an analysis of HST STIS data of VW Hyi acquired ~ 14 days after a superoutburst. At the time of the observation the system appears to be going into outburst with the longest wavelengths increasing in flux by a factor of 5, while…

Astrophysics · Physics 2016-08-30 E. M. Sion , F. H. Cheng , B. T. Gaensicke , P. Szkody

We present the results of a synthetic spectral analysis of the far ultraviolet archival IUE, HST and FUSE observations of the fast old nova V603 Aql, obtained some 90 years after its 1918 nova outburst. Our analysis utilizes the new Hubble…

Solar and Stellar Astrophysics · Physics 2015-07-15 Edward M. Sion , Patrick Godon , Alexandra Bisol

We present the results of a multi-component synthetic spectral analysis of the archival far ultraviolet spectra of several key nova-like variables including members of the SW Sex, RW Tri, UX UMa and VY Scl subclasses: KR Aur, RW Tri, V825…

The prototype nova-like variable VY Sculptoris was observed by the IUE during four different optical brightness states of the system. The FUV flux level from the highest state to the lowest state declines by a factor of 28. We have carried…

Astrophysics · Physics 2009-11-13 Ryan T. Hamilton , Edward M. Sion

We present the last HST/STIS E140M FUV spectrum (1150-1725A) of the dwarf nova (DN) WZ Sge, obtained in July 2004, 3 years following the early superoutburst of July 2001. Single white dwarf (WD) synthetic spectral fits (log{g}=8.5) to the…

Astrophysics · Physics 2009-11-11 P. Godon , E. M. Sion , F. Cheng , K. S. Long , B. T. Gaensicke , P. Szkody

We have applied grids of NLTE high gravity model atmospheres and optically thick accretion disk models for the first time to archival IUE and FUSE spectra of the S-type symbiotic variable EG And taken at superior spectroscopic conjunction…

Astrophysics · Physics 2009-11-10 K. Kolb , J. Miller , E. M. Sion , J. Mikolajewska

The old novae V533 Her (Nova Her 1963), DI Lac (Nova Lac 1910) and RR Pic (Nova Pic 1891) are in (or near) their quiescent stage following their nova explosions and continue to accrete at a high rate in the aftermath of their explosions.…

Solar and Stellar Astrophysics · Physics 2017-02-22 Edward Sion , Patrick Godon , Liam Jones

Far ultraviolet (FUV) observations are excellent probes of the inner accretion disk, disk outflows, and the mass-accumulating white dwarf in cataclysmic variables. Here we study the contrasting behavior of two canonical dwarf novae in…

Astrophysics · Physics 2007-05-23 C. S. Froning , K. S. Long , J. E. Drew , C. Knigge , D. Proga , J. A. Mattei

We obtained Hubble STIS spectra of three nova-like variables: V751 Cygni, V380 Oph, and - the only confirmed nova-like variable known to be below the period gap - BK Lyn. In all three systems, the spectra were taken during high optical…

Solar and Stellar Astrophysics · Physics 2015-05-13 Robert Zellem , Nicholas Hollon , Ronald-Louis Ballouz , Edward M. Sion , Patrick Godon , Boris T. Gänsicke , Knox Long
‹ Prev 1 2 3 10 Next ›