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Related papers: Infrared observations of cataclysmic variables

200 papers

We present a new sample of $K$-band spectral observations for CVs: non-magnetic and magnetic as well as present day and pre CVs. The purpose of this diverse sample is to address the recent claim that the secondary stars in dwarf novae are…

Solar and Stellar Astrophysics · Physics 2015-05-18 Steve B. Howell , Thomas E. Harrison , Paula Szkody , Nicole M. Silvestri

There exists a number of astronomical spectral phenomena that have remained unidentified after decades of extensive observations. The diffuse interstellar bands, the 220 nm feature, unidentified infrared emission bands, extended red…

Astrophysics of Galaxies · Physics 2021-08-11 Sun Kwok

We present a large grid of computed far- and mid-ultraviolet spectra (850 Angstroms to 2000 Angstroms) of the integrated light from steady-state accretion disks in luminous cataclysmic variables. The spectra are tabulated at 0.25 Angstrom…

Astrophysics · Physics 2009-10-30 Richard A. Wade , Ivan Hubeny

The ESA gamma-ray telescope, INTEGRAL, is detecting relatively more intrinsically rare cataclysmic variables (CVs) than were found by surveys at lower energies. Specifically, a large fraction of the CVs that are INTEGRAL sources consists of…

Solar and Stellar Astrophysics · Physics 2009-11-13 Magaretha L. Pretorius

Cataclysmic Variables (CVs) are compact binaries with white dwarf (WD) primaries. CVs and other accreting WD binaries (AWBs) are useful laboratories for studying accretion flows, gas dynamics, outflows, transient outbursts, and explosive…

High Energy Astrophysical Phenomena · Physics 2020-07-23 Solen Balman

Spectra of 38 candidate or known cataclysmic variables are presented. Most are candidate dwarf novae or systems containing possible highly magnetic white dwarfs, while a few (KR Aur, LS Peg, V380 Oph and V694 Mon) are previously known…

Solar and Stellar Astrophysics · Physics 2017-12-27 Paula Szkody , Mark E. Everett , Zhibin Dai , Donald Serna-Grey

HST and FUSE have provided high signal-to-noise, high-resolution spectra of a variety of cataclysmic variables and have allowed a detailed characterization of FUV emission sources in both high and low states. Here, I describe how this has…

Astrophysics · Physics 2009-11-11 Knox S. Long

The last few years have seen tremendous progress in our understanding of cataclysmic variable stars. As a result, we are finally developing a much clearer picture of their evolution as binary systems, the physics of the accretion processes…

Solar and Stellar Astrophysics · Physics 2015-03-17 Christian Knigge

Radiation from accretion discs in cataclysmic variable stars (CVs) provides fundamental information about the properties of these close binary systems and about the physics of accretion in general. The detailed diagnostics of accretion disc…

Astrophysics · Physics 2015-03-13 Irit Idan , Jean-Pierre Lasota , Jean-Marie Hameury , Giora Shaviv

We report observations of the transiting extrasolar planet, HD 209458 b, designed to detect the secondary eclipse. We employ the method of `occultation spectroscopy', which searches in combined light (star and planet) for the disappearance…

Astrophysics · Physics 2009-11-10 L. Jeremy Richardson , Drake Deming , Sara Seager

Ultraviolet observations using the Solar Blind Channel on the Hubble Space Telescope provide light curves and low resolution spectra of three pulsating white dwarfs in the cataclysmic variables SDSS013132.39-090122.3,…

We report the discovery of 11 new cataclysmic variable (CV) candidates by the Isaac Newton Telescope (INT) Photometric H alpha Survey of the northern Galactic plane (IPHAS). Three of the systems have been the subject of further follow-up…

Understanding and quantifying the contribution of known classes of transient and variable sources is an important lesson to be learned from the manifold of pre-cursors programs of the near-future large synoptic sky survey programs like…

We present the first results of an ongoing spectroscopic follow-up program of blue H-alpha excess sources within the Kepler field-of-view, in order to identify new cataclysmic variables. Kepler observations of the identified targets in this…

Solar and Stellar Astrophysics · Physics 2015-06-11 S. Scaringi , P. J. Groot , K. Verbeek , S. Greiss , C. Knigge , E. Koerding

Cataclysmic variables are among the photometrically most unstable stars in the zoo of stellar objects, exhibiting light variations on all time-scales between millennia and seconds. The literature is full of reports on variable phenomena…

Solar and Stellar Astrophysics · Physics 2020-02-17 Albert Bruch

Intermediate polars are a class of cataclysmic variables in which a white dwarf accretes material from a companion star. The intermediate polar nature confirmation usually derives from the detection of two periods in both $X$-ray and…

High Energy Astrophysical Phenomena · Physics 2026-01-21 A. A. Nucita , S. M. Lezzi , F. De Paolis , Strafella , D. Licchelli , A. Franco , M. Maiorano

We present a set of 6-12 micron ISOPHOT-S spectra of the general interstellar medium of the Milky Way. This part of the spectrum is dominated by a series of strong, wide emission features commonly called the Unidentified Infrared Bands. The…

Astrophysics · Physics 2009-11-07 J. Kahanpaa , K. Mattila , K. Lehtinen , C. Leinert , D. Lemke

Aims: We present discovery observations of the new cataclysmic variable star (CV) 1RXS J092737.4-191529, as well as spectra and photometry of SY Vol. The selection technique that turned up these two CVs is described; it should be efficient…

Astrophysics · Physics 2009-11-11 Magaretha L. Pretorius , Christian Knigge

We present a statistical analysis of the ultraviolet emission lines of cataclysmic variables (CVs) based on $\approx 430$ ultraviolet spectra of 20 sources extracted from the International Ultraviolet Explorer Uniform Low Dispersion…

Astrophysics · Physics 2009-10-28 Christopher W. Mauche , Y. Paul Lee , Timothy R. Kallman

We present spectroscopic and photometric observations of the cataclysmic variable CW 1045+525. Both the optical spectrum and the photometric lightcurve show a strong contribution of a K5V - M0V secondary. We derive an orbital period P_orb =…

Astrophysics · Physics 2009-11-07 C. Tappert , J. R. Thorstensen , W. H. Fenton , N. Bennert , L. Schmidtobreick , A. Bianchini