145 citations · 1.4k across the 68 of their papers we have counts for
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Modeling UX Ursae Majoris: An abundance of challenges
Albert P. Linnell, Patrick Godon, Ivan Hubeny +2
We present a system model for optical and far UV spectra of the nova-like variable UX UMa involving a white dwarf, secondary star, gas stream, hot spot and accretion disk using our…
Far Ultraviolet Spectroscopic Explorer Spectroscopy of the Nova-like BB Doradus
P. Godon, E. M. Sion, P. E. Barrett +2
We present an analysis of the Far Ultraviolet Spectroscopic Explorer ({\it{FUSE}}) spectra of the little-known southern nova-like BB Doradus. The spectrum was obtained as part of o…
A Far Ultraviolet Archival Study of Cataclysmic Variables: I. FUSE and HST/STIS Spectra of the Exposed White Dwarf in Dwarf Nova Systems
P. Godon, E. M. Sion, P. E. Barrett +3
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 dw…
Hubble Space Telescope STIS Spectroscopy of Long Period Dwarf Novae in Quiescence
E. M. Sion, B. T. Gaensicke, K. S. Long +5
We present the results of a synthetic spectral analysis of HST STIS spectra of five long period dwarf novae obtained during their quiescence to determine the properties of their wh…
Synthetic Spectrum Constraints on a Model of the Cataclysmic Variable QU Carinae
Albert P. Linnell, Patrick Godon, Ivan Hubeny +3
Neither standard model SEDs nor truncated standard model SEDs fit observed spectra of QU Carinae with acceptable accuracy over the range 900Åto 3000Å. Non-standard model SEDs fit t…
Simulations of the Boundary Layer Between a White Dwarf and its Accretion Disk
Dinshaw S. Balsara, Jacob Lund Fisker, Patrick Godon +1
Using a 2.5D time-dependent axisymmetric numerical code we recently developed, we solve the full compressible Navier-Stokes equations (including an alpha-viscosity prescription) to…
FUSE Observations of the Dwarf Novae UU Aql, BV Cen, and CH UMa in Quiescence
Edward M. Sion, Patrick Godon, Fuhua Cheng +1
We report on FUSE spectra of three U Gem-type, long period, dwarf novae, UU Aql, BV Cen and CH UMa taken during their quiescence intervals. We discuss the line identifications in t…
A Far Ultraviolet Study of the Nova-like V794 Aquilae
P. Godon, E. M. Sion, P. E. Barrett +1
We present a spectral analysis of the dereddened FUSE and HST/STIS spectra separately and combined together assuming E(B-V)=0.1 & 0.2. Overall, we find that the model fits are in m…
A Synthetic Spectrum and Light Curve Analysis of the Cataclysmic Variable IX Velorum
Albert P. Linnell, Patrick Godon, Ivan Hubeny +2
Spectrum synthesis analysis of FUSE and STIS spectra of the cataclysmic variable IX Velorum successfully produces a system model. Light synthesis analysis of K band photometry show…
HST/STIS Spectroscopy and Modeling of the Long Term Cooling of WZ Sagittae following the July 2001 Outburst
P. Godon, E. M. Sion, F. Cheng +3
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 wh…
A Far Ultraviolet Study of the Hot White Dwarf in the Dwarf Nova WW Ceti
P. Godon, L. Seward, E. M. Sion +1
We present a synthetic spectral analysis of IUE archival and FUSE FUV spectra of the peculiar dwarf nova WW Ceti. During the quiescence of WW Ceti, a white dwarf with Twd=26,000K c…
Far Ultraviolet Observations of the Dwarf Novae SS Aur and RU Peg in Quiescence
E. M. Sion, F. Cheng, P. Godon +1
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…
The boundary layer of VW Hyi in quiescence
Patrick Godon, Edward M. Sion
In this letter, we suggest that the missing boundary layer luminosity of dwarf novae in quiescence is released mainly in the ultraviolet (UV) as the second component commonly ident…
Far Ultraviolet Observations of the Dwarf Nova VW Hyi in Quiescence
Patrick Godon, Edward M. Sion, Fu-Hua Cheng +3
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 u…
Modeling the Heating and Cooling of WZ Sagittae following the July 2001 Outburst
P. Godon, E. M. Sion, F. Cheng +5
FUSE and HST/STIS spectra of the dwarf nova WZ Sge, obtained during and following the early superoutburst of July 2001 over a time span of 20 months, monitor changes in the compone…
Hubble Space Telescope Observations of UV Oscillations in WZ Sagittae During the Decline from Outburst
W. F. Welsh, E. M. Sion, P. Godon +4
We present a time series analysis of Hubble Space Telescope observations of WZ Sge obtained in 2001 September, October, November and December as WZ Sge declined from its 2001 July…
The Formation and Role of Vortices in Protoplanetary Disks
Patrick Godon, Mario Livio
We carry out a two-dimensional, compressible, simulation of a disk, including dust particles, to study the formation and role of vortices in protoplanetary disks. We find that anti…
Vortices in Protoplanetary Disks
Patrick Godon, Mario Livio
We use a high order accuracy spectral code to carry out two-dimensional time-dependent numerical simulations of vortices in accretion disks. In particular, we examine the stability…
On the non-linear hydrodynamic stability of thin Keplerian disks
Patrick Godon, Mario Livio
The non-linear hydrodynamic stability of thin, compressible, Keplerian disks is studied on the large two-dimensional compressible scale, using a high-order accuracy spectral method…