Publications (31)
The Super-Soft X-ray Phase of Nova RS Ophiuchi 2006
J. P. Osborne, K. L. Page, A. P. Beardmore +13
Swift X-ray observations of the ~60 day super-soft phase of the recurrent nova RS Ophiuchi 2006 show the progress of nuclear burning on the white dwarf in exquisite detail. First s…
Search for low-mass PMS companions around X-ray selected late B stars
S. Hubrig, D. Le Mignant, P. North +1
We have observed 49 X-ray detected bright late B-type dwarfs to search for close low-mass pre-main sequence (PMS) companions using the European Southern Observatory's ADONIS (Adapt…
Identification of selected sources from the ROSAT Galactic Plane Survey - I
C. Motch, P. Guillout, F. Haberl +6
We report on optical searches in the error circles of 93 ROSAT survey sources located at low galactic latitudes (|b| < 20 deg). These sources were extracted from the ROSAT Galactic…
Identification of a complete sample of northern ROSAT All-Sky Survey X-ray sources. VIII. The late-type stellar component
F. -J. Zickgraf, J. Krautter, S. Reffert +4
We present results of an investigation of the X-ray properties, age distribution, and kinematical characteristics of a high-galactic latitude sample of late-type field stars select…
Swift Observations of Shock Evolution in RS Ophiuchi
M. F. Bode, J. P. Osborne, K. L. Page +11
Our \textit{Swift} observations of RS Oph form an unprecedented X-ray dataset to undertake investigations of both the central source and the interaction of the outburst ejecta with…
Pan-Chromatic observations of the Recurrent Nova LMC 2009a (LMC 1971b)
M. F. Bode, M. J. Darnley, A. P. Beardmore +11
Nova LMC 2009a is confirmed as a Recurrent Nova (RN) from positional coincidence with nova LMC 1971b. The observational data set is one of the most comprehensive for any Galactic o…
Infrared observations of the 2006 outburst of the recurrent nova RS Ophiuchi: the early phase
A. Evans, T. Kerr, Bin Yang +20
We present infrared spectroscopy of the recurrent nova RS Ophiuchi, obtained 11.81, 20.75 and 55.71 days following its 2006 eruption. The spectra are dominated by hydrogen recombin…
Identification of a complete sample of northern ROSAT All-sky survey X-ray sources. VII. The AGN subsample
I. Appenzeller, F. -J. Zickgraf, J. Krautter +1
In order to derive statistical properties of a complete X-ray selected sample of AGN we used the classification spectra of the RASS Selected Areas-North survey to study the luminos…
A New Cataclysmic Variable RX J0757.0+6306: Candidate for the Shortest Period Intermediate Polar
G. H. Tovmassian, J. Greiner, P. Kroll +8
A new cataclysmic variable is identified as the optical counterpart of the faint and hard X-ray source RX J0757.0+6306 discovered during the ROSAT all-sky survey. Strong double-pea…
The Spitzer IRS view of V4334 Sgr (Sakurai's Object)
A. Evans, V. H. Tyne, J. Th. van Loon +11
We present an observation of the very late thermal pulse object V4334 Sgr (Sakurai's Object) with the Infrared Spectrometer (IRS) on the Spitzer Space Telescope. The emission from…
The peculiar dust shell of Nova DZ Cru (2003)
A. Evans, R. D. Gehrz, C. E. Woodward +10
We present Spitzer Space Telescope observations of the "peculiar variable" DZ Cru, identified by Rushton et al. (2008, MNRAS, 386, 289) as a classical nova. A dust shell, on which…
Infrared observations of the recurrent nova T Pyxidis: ancient dust basks in the warm glow of the 2011 outburst
A. Evans, R. D. Gehrz, L. A. Helton +15
We present Spitzer Space Telescope and Herschel Space Observatory infrared observations of the recurrent nova T Pyx during its 2011 eruption, complemented by ground-base optical-in…
The Early Ultraviolet Evolution of the ONeMg Nova V382 Velorum 1999
S. N. Shore, G. Schwarz, H. E. Bond +7
We present a multiwavelength study of the ONeMg Galactic nova V382 Velorum 1999 using HST/STIS and FUSE ultraviolet spectra and comparisons with published groundbased optical spect…
The New AM Her System RX J0704.2+6203. Northern Twin of BL Hyi
G. H. Tovmassian, P. Szkody, J. Greiner +6
We report here on the identification and study of the optical counterpart of the ROSAT source RX J0704.2+6203. Extensive spectral and photometric observation showed that the object…
Silicate dust in the environment of RS Ophiuchi following the 2006 eruption
A. Evans, C. E. Woodward, L. A. Helton +20
We present further Spitzer Space Telescope observations of the recurrent nova RS Ophiuchi, obtained over the period 208-430 days after the 2006 eruption. The later Spitzer IRS data…
Late-type field stars in the RASS at high galactic latitude
F. -J. Zickgraf, J. Krautter, S. Frink +4
We present results of an investigation on a high-galactic latitude sample of late-type field stars selected from the ROSAT All-Sky Survey (RASS). The sample comprises about 200 G,…
RX J0719.2+6557: A new eclipsing polar
G. H. Tovmassian, J. Greiner, F. -J. Zickgraf +5
A new magnetic cataclysmic variable is identified as the counterpart of the X-ray source RX J0719.2+6557. The emission lines show radial velocity variations with a period of 98.2 m…
The late-type stellar component in the ROSAT All-Sky Survey at high galactic latitude
F. -J. Zickgraf, J. M. Alcala, E. Covino +4
We investigated the properties of the late-type stellar component in the RASS at high-galactic latitude |b| based on an optically identified sample of ROSAT All-Sky Survey (RASS) X…
The Reanalysis of the ROSAT Data of GQ Mus (1983) Using White Dwarf Atmosphere Emission Models
S. Balman, J. Krautter
The analyses of X-ray emission from classical novae during the outburst stage have shown that the soft X-ray emission below 1 keV, which is thought to originate from the photospher…
Identification of a complete sample of northern ROSAT All-Sky Survey X-ray sources. IV. Statistical analysis
J. Krautter, F. -J. Zickgraf, I. Appenzeller +8
We present the statistical evaluation of a count rate and area limited complete sample of the ROSAT All-Sky Survey (RASS) comprising 674 sources. The RASS sources are located in si…
Rise and fall of the dust shell of the classical nova V339 Delphini
A. Evans, D. P. K. Banerjee, R. D. Gehrz +16
We present infrared spectroscopy of the classical nova V339 Delphini, obtained over a year period. The infrared emission lines were initially symmetrical, with HWHM velocit…
The infrared view of dust and molecules around V4334 Sgr (Sakurai's Object): a 20-year retrospective
A. Evans, R. D. Gehrz, C. E. Woodward +16
We present an analysis of the evolution of circumstellar dust and molecules in the environment of the very late thermal pulse object V4334 Sgr (Sakurai's Object) over a -ye…
RX J0719.2+6557: A New Eclipsing Polar
G. Tovmassian, J. Greiner, F. -J. Zickgraf +4
A new magnetic, eclipsing cataclysmic variable is identified as the counterpart of the X-ray source RX J0719.2+6557 detected during the ROSAT all-sky survey. The relative phasing o…
The ORFEUS II Echelle Spectrometer: Instrument description, performance and data reduction
J. Barnstedt, N. Kappelmann, I. Appenzeller +11
During the second flight of the ORFEUS-SPAS mission in November/December 1996, the Echelle spectrometer was used extensively by the Principal and Guest Investigator teams as one of…
Solid-phase C_60 in the peculiar binary XX Oph?
A. Evans, J. Th. van Loon, C. E. Woodward +8
We present infrared spectra of the binary XX Oph obtained with the Infrared Spectrograph on the Spitzer Space Telescope. The data show some evidence for the presence of solid C_60…
XMM-Newton X-ray and UV observations of the fast nova V2491 Cyg during the supersoft source phase
J. -U. Ness, J. P. Osborne, A. Dobrotka +12
Two XMM observations of the fast classical nova V2491Cyg were carried out on days 39.93 and 49.62 after discovery, during the supersoft source (SSS) phase, yielding simultaneous X-…
An X-ray emission line spectrum of Nova V382 Velorum 1999
J. -U. Ness, S. Starrfield, C. Jordan +2
We report on the analysis of an X-ray grating spectrum of the Classical Nova V382 Vel (1999), obtained with the LETG+HRC-S instrument on board CHANDRA, which shows emission lines d…
Spitzer and ground-based infrared observations of the 2006 eruption of RS Ophiuchi
A. Evans, C. E. Woodward, L. A. Helton +18
We present Spitzer Space Telescope and complementary ground-based infrared observations of the recurrent nova RS Ophiuchi, obtained over the period 64-111 days after the 2006 erupt…
The SSS phase of RS Ophiuchi observed with Chandra and XMM-Newton I.: Data and preliminary Modeling
J. -U. Ness, S. Starrfield, A. P. Beardmore +13
The phase of Super-Soft-Source (SSS) emission of the sixth recorded outburst of the recurrent nova RS Oph was observed twice with Chandra and once with XMM-Newton. The observations…
Swift observations of the 2006 outburst of the recurrent nova RS Ophiuchi: I. Early X-ray emission from the shocked ejecta and red giant wind
M. F. Bode, T. J. O'Brien, J. P. Osborne +16
RS Ophiuchi began its latest outburst on 2006 February 12. Previous outbursts have indicated that high velocity ejecta interact with a pre-existing red giant wind, setting up shock…
A Chandra LETGS observation of V4743 Sagittarius: A Super Soft X-ray Source and a Violently Variable Light Curve
J. -U. Ness, S. Starrfield, V. Burwitz +13
V4743 Sgr (Nova Sgr 2002 No. 3) was discovered on 20 September 2002. We obtained a 5ks ACIS-S spectrum in November 2002 and found that the nova was faint in X-rays. We then obtaine…