The direct detection of the irradiated brown dwarf in the white dwarf - brown dwarf binary SDSS J141126.20+200911.1
arXiv:1809.10205 · doi:10.1093/mnras/sty2599
Abstract
We have observed the eclipsing, post-common envelope white dwarf-brown dwarf binary, SDSS141126.20+200911.1, in the near-IR with the HAWK-I imager, and present here the first direct detection of the dark side of an irradiated brown dwarf in the band, and a tentative detection in the band. Our analysis of the lightcurves and indicates that the brown dwarf is likely to have an effective temperature of 1300 K, which is not consistent with the effective temperature of 800 K suggested by its mass and radius. As the brown dwarf is already absorbing almost all the white dwarf emission in the band we suggest that this inconsistency may be due to the UV-irradiation from the white dwarf inducing an artificial brightening in the band, similar to that seen for the similar system WD0137-349B, suggesting this brightening may be characteristic of these UV-irradiated binaries.
arXiv comment8 pages, 7 figures, 1 table. Accepted for publication in MNRAS
References in corpus (36)
- emcee: The MCMC Hammer
- Evolutionary models for cool brown dwarfs and extrasolar giant planets. The case of HD 20945
- Gaia Data Release 2: using Gaia parallaxes
- How Dry is the Brown Dwarf Desert?: Quantifying the Relative Number of Planets, Brown Dwarfs and Stellar Companions around Nearby Sun-like Stars
- Clouds and Chemistry: Ultracool Dwarf Atmospheric Properties from Optical and Infrared Colors
- ULTRACAM: an ultra-fast, triple-beam CCD camera for high-speed astrophysics
- Reflected Spectra and Albedos of Extrasolar Giant Planets I: Clear and Cloudy Atmospheres
- KELT-1b: A Strongly Irradiated, Highly Inflated, Short Period, 27 Jupiter-mass Companion Transiting a mid-F Star
- Comparative Planetary Atmospheres: Models of TrES-1 and HD209458b
- A giant planet undergoing extreme ultraviolet irradiation by its hot massive-star host
- 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
- Physical properties of IP Pegasi: an eclipsing dwarf nova with an unusually cool white dwarf
- A Possible Brown Dwarf Companion to the White Dwarf GD1400
- White dwarfs in the UKIDSS Large Area Survey: The Substellar Companion Fraction
- Initial Results from the Palomar Adaptive Optics Survey of Young Solar-Type Stars: a Brown Dwarf and Three Stellar Companions
- Near-infrared Thermal Emission Detections of a number of hot Jupiters and the Systematics of Ground-based Near-infrared Photometry
- NLTT5306: The shortest Period Detached White Dwarf + Brown Dwarf Binary
- Limb-Darkening Coefficients for Eclipsing White Dwarfs
- Two white dwarfs in ultrashort binaries with detached, eclipsing, likely substellar companions detected by K2
- The substellar companion in the eclipsing white dwarf binary SDSS J141126.20+200911.1
- A near-infrared spectroscopic detection of the brown dwarf in the post common envelope binary WD0137-349
- Multiwaveband photometry of the irradiated brown dwarf WD0137-349B
- EPIC201702477b: A Long Period Transiting Brown Dwarf from K2
- An irradiated brown-dwarf companion to an accreting white dwarf
- WASP-128b: a transiting brown dwarf in the dynamical-tide regime
- WD0837+185:the formation and evolution of an extreme mass ratio white dwarf-brown dwarf binary in Praesepe
- The first sub-70 minute non-interacting WD-BD system: EPIC212235321
- The Broadband and Spectrally-Resolved H-band Eclipse of KELT-1b and the Role of Surface Gravity in Stratospheric Inversions in Hot Jupiters
- The eclipsing post-common envelope binary CSS21055: a white dwarf with a probable brown-dwarf companion
- Emission lines in the atmosphere of the irradiated brown dwarf WD0137-349B
- WD 1202-024: The Shortest-Period Pre-Cataclysmic Variable
- Using Gaussian processes to model light curves in the presence of flickering: the eclipsing cataclysmic variable ASASSN-14ag
- Discovery of eclipsing white dwarf systems in a search for Earth-size companions
- A near-IR spectrum of the DO white dwarf RE J0503-285
- Brown Dwarf Companions to White Dwarfs
Cited by in corpus (19)
- Atmospheric Dynamics of Hot Giant Planets and Brown Dwarfs
- WD1032+011, an inflated brown dwarf in an old eclipsing binary with a white dwarf
- Simplified 3D GCM modelling of the irradiated brown dwarf WD0137-349B
- Towards a volumetric census of close white dwarf binaries I.Reference samples
- Infrared Excesses around Bright White Dwarfs from Gaia and unWISE. II
- Atmospheric circulation of tidally locked gas giants with increasing rotation and implications for white-dwarf-brown-dwarf systems
- Lightning and charge processes in brown dwarf and exoplanet atmospheres
- 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
- Mapping the pressure-dependent day-night temperature contrast of a strongly irradiated atmosphere with HST spectroscopic phase curve
- Exploring deep and hot adiabats as a potential solution to the radius inflation problem in brown dwarfs: Long-timescale models of the deep atmospheres of KELT-1b, Kepler-13Ab, and SDSS1411B
- White Dwarfs with Infrared Excess from LAMOST Data Release 5
- Disk or Companion: Characterizing Excess Infrared Flux in Seven White Dwarf Systems with Near-Infrared Spectroscopy
- Evidence of Radius Inflation in Radiative GCM Models of WASP-76b due to the Advection of Potential Temperature
- First discovery of an ultra-cool white dwarf benchmark in common proper motion with an M dwarf
- ZTFJ0038+2030: a long period eclipsing white dwarf and a substellar companion
- Measurement of stellar and substellar winds using white dwarf hosts
- Fates of the sub-stellar objects (FOSSO) I. Fates of the known brown dwarfs in main-sequence--BD binaries
- Patchy nightside clouds on ultra-hot Jupiters: General Circulation Model simulations with radiatively active cloud tracers