Multiwaveband photometry of the irradiated brown dwarf WD0137-349B
arXiv:1412.6363 · doi:10.1093/mnras/stu2721
Abstract
WD0137-349 is a white dwarf-brown dwarf binary system in a 116 minute orbit. We present radial velocity observations and multiwaveband photometry from V, R and I in the optical, to J, H and Ks in the near-IR and [3.6], [4.5], [5.8] and [8.0] microns in the mid-IR. The photometry and lightcurves show variability in all wavebands, with the amplitude peaking at [4.5] microns, where the system is also brightest. Fluxes and brightness temperatures were computed for the heated and unheated atmosphere of the brown dwarf (WD0137-349B) using synthetic spectra of the white dwarf using model atmosphere simulations. We show that the flux from the brown dwarf dayside is brighter than expected in the Ks and [4.5] micron bands when compared to models of irradiated brown dwarfs with full energy circulation and suggest this over-luminosity may be attributed to H2 fluorescence or H3+ being generated in the atmosphere by the UV irradiation.
arXiv comment9 pages, 9 figures, 5 tables. Accepted for publication in MNRAS
References in corpus (30)
- The Infrared Array Camera (IRAC) for the Spitzer Space Telescope
- A Unified Theory for the Atmospheres of the Hot and Very Hot Jupiters: Two Classes of Irradiated Atmospheres
- An Infrared Spectroscopic Sequence of M, L and T Dwarfs
- A Possible Bifurcation in Atmospheres of Strongly Irradiated Stars and Planets
- An Improved Spectroscopic Analysis of DA White Dwarfs from the Sloan Digital Sky Survey Data Release 4
- ExoMol: molecular line lists for exoplanet and other atmospheres
- WASP-12b: The hottest transiting planet yet discovered
- Clouds and Chemistry: Ultracool Dwarf Atmospheric Properties from Optical and Infrared Colors
- High C/O Ratio and Weak Thermal Inversion in the Very Hot Atmosphere of Exoplanet WASP-12b
- 3.6 and 4.5 Micron Phase Curves and Evidence for Non-Equilibrium Chemistry in the Atmosphere of Extrasolar Planet HD 189733b
- Reflected Spectra and Albedos of Extrasolar Giant Planets I: Clear and Cloudy Atmospheres
- Comparative Planetary Atmospheres: Models of TrES-1 and HD209458b
- Found: The missing blue opacity in atmosphere models of cool hydrogen white dwarfs
- The Ultraviolet Radiation Environment Around M dwarf Exoplanet Host Stars
- Dynamic Meteorology at the Photosphere of HD 209458b
- HST hot Jupiter transmission spectral survey: evidence for aerosols and lack of TiO in the atmosphere of WASP-12b
- The Influence of Atmospheric Dynamics on the Infrared Spectra and Light Curves of Hot Jupiters
- Survival of a brown dwarf after engulfment by a red giant star
- WASP-30b: a 61 Mjup brown dwarf transiting a V=12, F8 star
- Temperature-dependent molecular absorption cross sections for exoplanets and other atmospheres
- A Possible Brown Dwarf Companion to the White Dwarf GD1400
- NLTT5306: The shortest Period Detached White Dwarf + Brown Dwarf Binary
- A near-infrared spectroscopic detection of the brown dwarf in the post common envelope binary WD0137-349
- Spitzer and z' Secondary Eclipse Observations of the Highly Irradiated Transiting Brown Dwarf KELT-1b
- WD0837+185:the formation and evolution of an extreme mass ratio white dwarf-brown dwarf binary in Praesepe
- The eclipsing post-common envelope binary CSS21055: a white dwarf with a probable brown-dwarf companion
- The Influence of Galactic Cosmic Rays on Ion-Neutral Hydrocarbon Chemistry in the Upper Atmospheres of Free-Floating Exoplanets
- Thermometric Soots on Warm Jupiters?
- Search for H3+ in HD141569A
- A near-IR spectrum of the DO white dwarf RE J0503-285
Cited by in corpus (37)
- A giant planet undergoing extreme ultraviolet irradiation by its hot massive-star host
- Extremely Irradiated Hot Jupiters: Non-Oxide Inversions, H- Opacity, and Thermal Dissociation of Molecules
- Forward and Inverse Modeling of the Emission and Transmission Spectrum of GJ 436b: Investigating Metal Enrichment, Tidal Heating, and Clouds
- Atmospheric Dynamics of Hot Giant Planets and Brown Dwarfs
- Atmospheric Regimes and Trends on Exoplanets and Brown Dwarfs
- Grid of Pseudo-2D Chemistry Models for Tidally-Locked Exoplanets. I. The Role of Vertical and Horizontal Mixing
- Close detached white dwarf + brown dwarf binaries: further evidence for low values of the common envelope efficiency
- MASCARA-1 b: A hot Jupiter transiting a bright A-star in a misaligned orbit
- Infrared Excesses around Bright White Dwarfs from Gaia and unWISE I
- The dust never settles: collisional production of gas and dust in evolved planetary systems
- The first sub-70 minute non-interacting WD-BD system: EPIC212235321
- WD1032+011, an inflated brown dwarf in an old eclipsing binary with a white dwarf
- A Significant Over-Luminosity in the Transiting Brown Dwarf CWW 89Ab
- Simplified 3D GCM modelling of the irradiated brown dwarf WD0137-349B
- Emission lines in the atmosphere of the irradiated brown dwarf WD0137-349B
- Lightning climatology of exoplanets and brown dwarfs guided by Solar System data
- WD 1202-024: The Shortest-Period Pre-Cataclysmic Variable
- Atmospheric circulation of tidally locked gas giants with increasing rotation and implications for white-dwarf-brown-dwarf systems
- NLTT5306B: an inflated, weakly irradiated brown dwarf
- WIRED for EC: New White Dwarfs with Infrared Excesses and New Classification Schemes from the Edinburgh-Cape Blue Object Survey
- Three new brown dwarfs and a massive hot Jupiter revealed by TESS around early-type stars
- The direct detection of the irradiated brown dwarf in the white dwarf - brown dwarf binary SDSS J141126.20+200911.1
- Signs of accretion in the white dwarf + brown dwarf binary NLTT5306
- Close-in Exoplanets as Candidates of Strange Quark Matter Objects
- A Search for short-period Rocky Planets around WDs with the Cosmic Origins Spectrograph (COS)
- Lightning and charge processes in brown dwarf and exoplanet atmospheres
- Atmospheric electrification in dusty, reactive gases in the solar system and beyond
- Atmosphere Models of Brown Dwarfs Irradiated by White Dwarfs: Analogues for Hot and Ultra-Hot Jupiters
- HST/WFC3 Complete Phase-resolved Spectroscopy of White Dwarf-Brown Dwarf Binaries WD 0137 and EPIC 2122
- Colour-magnitude diagrams of transiting Exoplanets -- III. A public code, nine strange planets, and the role of Phosphine
- Disk or Companion: Characterizing Excess Infrared Flux in Seven White Dwarf Systems with Near-Infrared Spectroscopy
- Confirming new white dwarf-ultracool dwarf binary candidates
- Flash ionisation signature in coherent cyclotron emission from Brown Dwarfs
- Two substellar survivor candidates; one found and one missing
- ZTFJ0038+2030: a long period eclipsing white dwarf and a substellar companion
- An irradiated-Jupiter analogue hotter than the Sun
- Insight into atmospheres of extrasolar planets through plasma processes