Novalike Cataclysmic Variables in the Infrared

Abstract

Novalike cataclysmic variables have persistently high mass transfer rates and prominent steady state accretion disks. We present an analysis of infrared observations of twelve novalikes obtained from the Two Micron All Sky Survey, the Spitzer Space Telescope, and the Wide-field Infrared Survey Explorer All Sky Survey. The presence of an infrared excess at >3-5 microns over the expectation of a theoretical steady state accretion disk is ubiquitous in our sample. The strength of the infrared excess is not correlated with orbital period, but shows a statistically significant correlation (but shallow trend) with system inclination that might be partially (but not completely) linked to the increasing view of the cooler outer accretion disk and disk rim at higher inclinations. We discuss the possible origin of the infrared excess in terms of emission from bremsstrahlung or circumbinary dust, with either mechanism facilitated by the mass outflows (e.g., disk wind/corona, accretion stream overflow, and so on) present in novalikes. Our comparison of the relative advantages and disadvantages of either mechanism for explaining the observations suggests that the situation is rather ambiguous, largely circumstantial, and in need of stricter observational constraints.

68 pages (preprint format) including 14 figures, 6 tables; to appear in The Astrophysical Journal

References in corpus (93)

• The Wide-field Infrared Survey Explorer (WISE): Mission Description and Initial On-orbit Performance
• Interstellar Dust Grains
• The disc instability model of dwarf-novae and low-mass X-ray binary transients
• Models of Stars, Brown Dwarfs and Exoplanets
• Spectral Irradiance Calibration in the Infrared. XIV: the Absolute Calibration of 2MASS
• Kepler-16: A Transiting Circumbinary Planet
• A Tidally-Disrupted Asteroid Around the White Dwarf G29-38
• The Evolution of Cataclysmic Variables as Revealed by their Donor Stars
• The Transiting Circumbinary Planets Kepler-34 and Kepler-35
• Are There Unstable Planetary Systems Around White Dwarfs?
• Effects of Dust Growth and Settling in T Tauri Disks
• Kepler-47: A Transiting Circumbinary Multi-Planet System
• The Donor Stars of Cataclysmic Variables
• The Chemical Composition of an Extrasolar Minor Planet
• An Exploration of the Paradigm for the 2-3 Hour Period Gap in Cataclysmic Variables
• A Catalog and Atlas of Cataclysmic Variables - The Living Edition
• The sdB+M Eclipsing System HW Virginis and its Circumbinary Planets
• The Neptune-Sized Circumbinary Planet Kepler-38b
• Spitzer/IRAC Photometry of M, L, and T Dwarfs
• A transient radio jet in an erupting dwarf nova
• Six White Dwarfs with Circumstellar Silicates
• An aluminum/calcium-rich, iron-poor, white dwarf star: evidence for an extrasolar planetary lithosphere?
• K-H_2 Quasi-molecular absorption detected in the T-dwarf epsilon Indi Ba
• Detection of a period decrease in NN Ser with ULTRACAM: evidence for strong magnetic braking or an unseen companion?
• The planets around NN Ser: still there
• Detection of a planetary system orbiting the eclipsing polar HU Aqr
• A dynamical analysis of the proposed HU Aquarii planetary system
• Infrared Emission from the Dusty Disk Orbiting GD 362, An Externally-Polluted White Dwarf
• Far Infrared Prperties of M Dwarfs
• Orbital Period Variations in Eclipsing Post Common Envelope Binaries
• The Dust cloud around the White Dwarf G 29-38. 2. Spectrum from 5-40 microns and mid-infrared variability
• Circumbinary Planets Orbiting the Rapidly Pulsating Subdwarf B-type binary NY Vir
• Circumbinary disks and cataclysmic variable evolution
• Accretion disc outbursts: a new version of an old model
• The giant planet orbiting the cataclysmic binary DP Leonis
• Sublimation Temperature of Circumstellar Dust Particles and Its Importance for Dust Ring Formation
• Possible Signs of Water and Differentiation in a Rocky Exoplanetary Body
• Possible detection of two giant extrasolar planets orbiting the eclipsing polar UZ Fornacis
• Revisiting the proposed planetary system orbiting the eclipsing polar HU Aquarii
• A Circumbinary Planet in Orbit Around the Short-Period White-Dwarf Eclipsing Binary RR Cae
• Superhumps in Cataclysmic Binaries. XXIII. V442 Ophiuchi and RX J1643.7+3402
• The environments of z<0.3 QSOs
• On the HU Aquarii planetary system hypothesis
• Single degenerate supernova type Ia progenitors
• Angular momentum losses and the orbital period distribution of cataclysmic variables below the period gap: effects of circumbinary disks
• The Detection of 13CO and Other Apparent Abundance Anomalies in the Secondary Stars of Long-Period Cataclysmic Variables
• Grain growth across protoplanetary discs: 10-micron silicate feature versus millimetre slope
• Observations of the SW Sextantis star DW Ursae Majoris with the Far Ultraviolet Spectroscopic Explorer
• Infrared spectroscopy of cataclysmic variables: III. Dwarf novae below the period gap and novalike variables
• Hunting high and low: XMM monitoring of the eclipsing polar HU Aquarii
• Excess mid-IR emission in Cataclysmic Variables
• New Light-Travel Time Models and Orbital Stability Study of the Proposed Planetary System HU Aquarii
• Is the silicate emission feature only influenced by grain size?
• Timing variations in the secondary eclipse of NN Ser
• The Geometry and Ionization Structure of the Wind in the Eclipsing Nova-like Variables RW Tri and UX UMa
• Astrometry with Hubble Space Telescope Fine Guidance Sensor 3: The Parallax of the Cataclysmic Variable RW Triangulum
• Taming the Invisible Monster: System Parameter Constraints for Epsilon Aurigae from the Far-Ultraviolet to the Mid-Infrared
• The Structure and Evolution of Circumbinary Disks in Cataclysmic Variable Systems
• Dark spot, Spiral waves and the SW Sex behaviour: it is all about UX Ursae Majoris
• The component masses of the cataclysmic variable V347 Puppis
• Effects of Grain Size on the Spectral Energy Distribution of Dusty Circumstellar Envelopes
• A Synthetic Spectrum and Light Curve Analysis of the Cataclysmic Variable IX Velorum
• The SW Sex enigma
• The anomalous accretion disk of the Cataclysmic Variable RW Sextantis
• Silicate dust in the environment of RS Ophiuchi following the 2006 eruption
• Resonance line-profile calculations based on hydrodynamical models of cataclysmic variable winds
• A spectrophotometric study of RW Trianguli
• Herschel Observations of Cataclysmic Variables
• A Preliminary Observational Search for Circumbinary Disks Around Cataclysmic Variables
• Spiral waves and the secondary in the novalike variable, V3885 Sgr
• A Method for the Study of Accretion Disk Emission in Cataclysmic Variables I: The Model
• Theoretical orbital period distributions of cataclysmic variables above the period gap: effects of circumbinary disks
• Observations of V592 Cassiopeiae with the Spitzer Space Telescope - Dust in the Mid-Infrared
• Recovery of 29-s Oscillations in HST/FOS Eclipse Observations of the Cataclysmic Variable UX Ursae Majoris
• The Mid-Infrared Spectrum of the Short Orbital Period Polar EF Eridani from the Spitzer Space Telescope
• V3885 Sagittarius: a Comparison with a Range of Standard Model Accretion Disks
• QU Car: a very high luminosity nova-like binary with a carbon-enriched companion
• Synthetic Spectrum Constraints on a Model of the Cataclysmic Variable QU Carinae
• The Invisible Monster Has Two Faces: Observations of Epsilon Aurigae with the Herschel Space Observatory
• Ultraviolet Spectra of CV Accretion Disks with Non-Steady T(r) Laws
• Nova-Like Cataclysmic Variable TT Ari: QPO Behaviour Coming Back From Positive Superhumps
• Emission Line Flickering from the Secondary Star in Cataclysmic Variables? A study of V3885 Sagitarii
• Modeling UX Ursae Majoris: An abundance of challenges
• Observations of V592 Cas - An Outflow at Optical Wavelengths
• An Illustration of Modeling Cataclysmic Variables: HST, FUSE, SDSS Spectra of SDSSJ080908.39+381406.2
• On The Accretion Rates of SW Sextantis Nova-Like Variables
• The Component Star Masses in RW Tri
• Far Ultraviolet Spectral Analysis of the Prototype Nova-Like Variable VY Sculptoris from the High State to the Low State
• QU Carinae: Supernova Ia in the making?
• QU Carinae: a SNeIa progenitor?
• On the relation between supersoft X-ray sources and VY Scl stars: The cases of V504 Cen and VY Scl
• Spitzer Observations of Var Her 04: Possible Detection of Dust Formation in a Super-Outbursting TOAD
• Nova Dust Nucleation: Kinetics and Photodissociation

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