Retrieval of SDSS J1416+1348AB

Abstract

We present the distance-calibrated spectral energy distribution (SED) of the d/sdL7 SDSS J14162408+1348263A (J1416A) and an updated SED for SDSS J14162408+1348263B (J1416B). We also present the first retrieval analysis of J1416A using the Brewster retrieval code base and the second retrieval of J1416B. We find that the primary is best fit by a non-grey cloud opacity with a power-law wavelength dependence, but is indistinguishable between the type of cloud parameterization. J1416B is best fit by a cloud-free model, consistent with the results from Line et al. (2017). Most fundamental parameters derived via SEDs and retrievals are consistent within 1 sigma for both J1416A and J1416B. The exceptions include the radius of J1416A, where the retrieved radius is smaller than the evolutionary model-based radius from the SED for the deck cloud model, and the bolometric luminosity which is consistent within 2.5 sigma for both cloud models. The pair's metallicity and Carbon-to-Oxygen (C/O) ratio point towards formation and evolution as a system. By comparing the retrieved alkali abundances while using two opacity models, we are able to evaluate how the opacities behave for the L and T dwarf. Lastly, we find that relatively small changes in composition can drive major observable differences for lower temperature objects.

arXiv comment40 pages, 25 figures

References in corpus (64)

• Astropy: A Community Python Package for Astronomy
• emcee: The MCMC Hammer
• The chemical composition of the Sun
• Gaia Data Release 2. Summary of the contents and survey properties
• The Seventh Data Release of the Sloan Digital Sky Survey
• Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties
• Gaia Data Release 2: The astrometric solution
• Evolutionary models for cool brown dwarfs and extrasolar giant planets. The case of HD 20945
• Evolutionary models for very-low-mass stars and brown dwarfs with dusty atmospheres
• Local stellar kinematics from Hipparcos data
• The Evolution of L and T Dwarfs in Color-Magnitude Diagrams
• A Temperature and Abundance Retrieval Method for Exoplanet Atmospheres
• The Hawaii Infrared Parallax Program. I. Ultracool Binaries and the L/T Transition
• Line and Mean Opacities for Ultracool Dwarfs and Extrasolar Planets
• Neglected Clouds in T and Y Dwarf Atmospheres
• The Spectra of T Dwarfs I: Near-Infrared Data and Spectral Classification
• The Discovery of Y Dwarfs Using Data from the Wide-field Infrared Survey Explorer (WISE)
• Gaseous Mean Opacities for Giant Planet and Ultracool Dwarf Atmospheres over a Range of Metallicities and Temperatures
• Fundamental Parameters and Spectral Energy Distributions of Young and Field Age Objects with Masses Spanning the Stellar to Planetary Regime
• Atmospheric, Evolutionary, and Spectral Models of the Brown Dwarf Gliese 229 B
• A new set of atmosphere and evolution models for cool T-Y brown dwarfs and giant exoplanets
• Discoveries from a Near-infrared Proper Motion Survey using Multi-epoch 2MASS Data
• Compositional diversity in the atmospheres of hot Neptunes, with application to GJ 436b
• The Brown Dwarf Kinematics Project (BDKP). III. Parallaxes for 70 Ultracool Dwarfs
• Atmospheric Chemistry in Giant Planets, Brown Dwarfs, and Low-Mass Dwarf Stars II. Sulfur and Phosphorus
• Weather on Other Worlds. II. Survey Results: Spots Are Ubiquitous on L and T Dwarfs
• Atmospheric Chemistry in Giant Planets, Brown Dwarfs, and Low-Mass Dwarf Stars III. Iron, Magnesium, and Silicon
• A Theory of Extrasolar Giant Planets
• Quantitatively Assessing the Role of Clouds in the Transmission Spectrum of GJ 1214b
• The First Substellar Subdwarf? Discovery of a Metal-poor L Dwarf with Halo Kinematics
• Calculations of the Far-Wing Line Profiles of Sodium and Potassium in the Atmospheres of Substellar-Mass Objects
• The atmospheric circulation of a nine-hot Jupiter sample: Probing circulation and chemistry over a wide phase space
• Uniform Atmospheric Retrieval Analysis of Ultracool Dwarfs I: Characterizing Benchmarks, Gl570D and HD3651B
• High temperature condensate clouds in super-hot Jupiter atmospheres
• Retrieval of atmospheric properties of cloudy L dwarfs
• New study of the line profiles of sodium perturbed by H2
• Peering into the formation history of beta Pictoris b with VLTI/GRAVITY long baseline interferometry
• New H2 collision-induced absorption and NH3 opacity and the spectra of the coolest brown dwarfs
• Carbon and oxygen abundances in stellar populations
• Clouds in the Coldest Brown Dwarfs: FIRE Spectroscopy of Ross 458C
• Uniform Atmospheric Retrieval Analysis of Ultracool Dwarfs II: Properties of 11 T-dwarfs
• The AllWISE Motion Survey, Part 2
• The discovery of a very cool binary system
• Primeval very low-mass stars and brown dwarfs. I. Six new L subdwarfs, classification and atmospheric properties
• ULAS J141623.94$+$134836.3 - a faint common proper motion companion of a nearby L dwarf. Serendipitous discovery of a cool brown dwarf in UKIDSS DR6
• A Uniform Retrieval Analysis of Ultracool Dwarfs. III. Properties of Y-Dwarfs
• The Properties of the 500 K Dwarf UGPS J072227.51-054031.2, and a Study of the Far-Red Flux of Cold Brown Dwarfs
• The LEECH Exoplanet Imaging Survey: Characterization of the Coldest Directly Imaged Exoplanet, GJ 504 b, and Evidence for Super-Stellar Metallicity
• SDSS J141624.08+134826.7: A Nearby Blue L Dwarf From the Sloan Digital Sky Survey
• On the Radii of Brown Dwarfs Measured with AKARI Near-Infrared Spectroscopy
• Discovery of An Unusually Blue L Dwarf Within 10 pc of the Sun
• Parallax and Luminosity Measurements of an L Subdwarf
• Primeval very low-mass stars and brown dwarfs - VI. Population properties of metal-poor degenerate brown dwarfs
• Chemical Timescales in the Atmospheres of Highly Eccentric Exoplanets
• The Water Abundance of the Directly Imaged Substellar Companion κ And b Retrieved from a Near Infrared Spectrum
• ULAS J141623.94+134836.3: a Blue T Dwarf Companion to a Blue L Dwarf
• Primeval very low-mass stars and brown dwarfs - IV. New L subdwarfs, Gaia astrometry, population properties, and a blue brown dwarf binary
• A Search for Photometric Variability in L and T type Brown Dwarf Atmospheres
• Trigonometric Parallaxes for Two Late-Type Subdwarfs: LSR1425+71 (sdM8.0) and the Binary LSR1610-00 (sd?M6pec)
• 2MASS J06164006-6407194: The First Outer Halo L Subdwarf
• SDSS J141624.08+134826.7: Blue L Dwarfs and Non-Equilibrium Chemistry
• Primeval very low-mass stars and brown dwarfs - III. The halo transitional brown dwarfs
• Weather on Other Worlds. IV. H$\alpha$ emission and photometric variability are not correlated in L0$-$T8 dwarfs
• Optical and Near-Infrared Spectroscopy of the L Subdwarf SDSS J125637.13-022452.4

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• Patchy Forsterite Clouds in the Atmospheres of Two Highly Variable Exoplanet Analogs
• New Candidate Extreme T Subdwarfs from the Backyard Worlds: Planet 9 Citizen Science Project
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• Retrieval Study of Brown Dwarfs Across the L-T Sequence
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• Retrieval study of cool, directly imaged exoplanet 51 Eri b
• Methane Emission From a Cool Brown Dwarf
• An Atmospheric Retrieval of the Brown Dwarf Gliese 229B
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• A Wide Planetary Mass Companion Discovered Through the Citizen Science Project Backyard Worlds: Planet 9
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• A Comparative L-dwarf Sample Exploring the Interplay Between Atmospheric Assumptions and Data Properties
• CWISE J014611.20-050850.0AB: The Widest Known Brown Dwarf Binary in the Field
• Investigating Possible Binarity for GJ 229B
• Atmospheric abundances and bulk properties of the binary brown dwarf Gliese 229 Bab from JWST/MIRI spectroscopy
• Ross 19B: An Extremely Cold Companion Discovered via the Backyard Worlds: Planet 9 Citizen Science Project
• A Uniform Retrieval Analysis of Ultra-cool Dwarfs. IV. A Statistical Census from 50 Late-T Dwarfs