SKYSURF-11: A New Zodiacal Light Model Optimized for Optical Wavelengths

Abstract

We present an improved zodiacal light model, optimized for optical wavelengths, using archival Hubble Space Telescope (HST) imaging from the SKYSURF program. The Kelsall et al. 1998 model used infrared imaging from the Diffuse Infrared Background Experiment (DIRBE) on board the Cosmic Background Explorer to create a 3D structure of the interplanetary dust cloud. However, this model cannot accurately represent zodiacal light emission outside of DIRBE's nominal wavelength bandpasses, the bluest of which is 1.25 micron. We present a revision to this model (called ZodiSURF) that incorporates analytical forms of both the scattering phase function and albedo as a function of wavelength, which are empirically determined across optical wavelengths (0.3-1.6 micron) from over 5,000 HST sky surface brightness (sky-SB) measurements. This refined model results in significantly improved predictions of zodiacal light emission at these wavelengths and for Sun angles greater than 80 deg. Fits to HST data show an uncertainty in the model of ~4.5%. Remarkably, the HST sky-SB measurements show an excess of residual diffuse light (HST Sky - ZodiSURF - Diffuse Galactic Light) of 0.013 +/- 0.006 MJy/sr. We suggest that a very dim spherical dust cloud may need to be included in the zodiacal light model, which we present here as a toy model.

32 pages, 18 figures, 4 tables; Submitted to ApJ on Oct 20th, 2025; Accepted to ApJ on February 10, 2026

References in corpus (69)

• SciPy 1.0--Fundamental Algorithms for Scientific Computing in Python
• Maps of Dust IR Emission for Use in Estimation of Reddening and CMBR Foregrounds
• emcee: The MCMC Hammer
• Planck 2015 results. XIII. Cosmological parameters
• Dust Grain Size Distributions and Extinction in the Milky Way, LMC, and SMC
• The extragalactic optical-infrared background radiations, their time evolution and the cosmic photon-photon opacity
• Planck 2013 results. XI. All-sky model of thermal dust emission
• The Cosmic Infrared Background: Measurements and Implications
• Extragalactic Background Light Inferred from AEGIS Galaxy SED-type Fractions
• New Interstellar Dust Models Consistent with Extinction, Emission, and Abundance Constraints
• Modeling the Extragalactic Background Light from Stars and Dust
• Cometary Origin of the Zodiacal Cloud and Carbonaceous Micrometeorites
• The COBE Diffuse Infrared Background Experiment Search for the Cosmic Infrared Background: II. Model of the Interplanetary Dust Cloud
• IRIS: A new generation of IRAS maps
• Planck 2018 results. III. High Frequency Instrument data processing and frequency maps
• Theoretical Limits on Extrasolar Terrestrial Planet Detection with Coronagraphs
• The COBE Diffuse Infrared Background Experiment Search for the Cosmic Infrared Background: IV. Cosmological Implications
• The Evolution of Galaxy Number Density at z < 8 and its Implications
• Maximizing the ExoEarth Candidate Yield from a Future Direct Imaging Mission
• The Vega Debris Disk -- A Surprise from Spitzer
• JWST's PEARLS: Prime Extragalactic Areas for Reionization and Lensing Science: Project Overview and First Results
• Foreground component separation with generalised ILC
• Extra-galactic background light measurements from the far-UV to the far-IR from deep ground and space-based galaxy counts
• Angular Power Spectra of the COBE DIRBE Maps
• On the Origin of Near-Infrared Extragalactic Background Light Anisotropy
• New measurements of the cosmic infrared background fluctuations in deep Spitzer/IRAC survey data and their cosmological implications
• New Spectral Evidence of an Unaccounted Component of the Near-infrared Extragalactic Background Light from the CIBER
• Infrared background signatures of the first black holes
• An improved model for the infrared emission from the zodiacal dust cloud: cometary, asteroidal and interstellar dust
• The Spectrum of the Diffuse Galactic Light I: The Milky Way in Scattered Light
• Near-infrared absorption properties of oxygen-rich stardust analogues: The influence of coloring metal ions
• AKARI observation of the fluctuation of the near-infrared background
• Clementine Observations of the Zodiacal Light and the Dust Content of the Inner Solar System
• The Mid-Infrared Spectrum of the Zodiacal and Exozodiacal Light
• The Resolved NIR Extragalactic Background
• The Resolved Near-Infrared Extragalactic Background
• Extended Red Emission in High-Galactic Latitude Interstellar Clouds
• Measurement of the Cosmic Optical Background using the Long Range Reconnaissance Imager on New Horizons
• The effect of dust composition and shape on radiation-pressure forces and blowout sizes of particles in debris disks
• Observations of the Near-Infrared Spectrum of the Zodiacal Light with CIBER
• Extragalactic background Light: a measurement at 400 nm using dark cloud shadow II. Spectroscopic separation of dark cloud's light, and results
• How dark the sky: the JWST backgrounds
• Ultraviolet to optical diffuse sky emission as seen by the Hubble Space Telescope Faint Object Spectrograph
• Modelling the cosmic spectral energy distribution and extragalactic background light over all time
• Diffuse Galactic Light in the Field of the Translucent High Galactic Latitude Cloud MBM32
• Origin of Interplanetary Dust through Optical Properties of Zodiacal Light
• Measurements of the mean diffuse galactic light spectrum in the 0.95 μm to 1.65 μm band from CIBER
• A Measurement of the Cosmic Optical Background and Diffuse Galactic Light Scaling from the R < 50 AU New Horizons-LORRI Data
• Low-Resolution Spectrum of the Diffuse Galactic Light and 3.3 um PAH emission with AKARI InfraRed Camera
• SKYSURF: Constraints on Zodiacal Light and Extragalactic Background Light through Panchromatic HST All-Sky Surface-Brightness Measurements: I. Survey Overview and Methods
• Determination of the Cosmic Infrared Background from COBE/FIRAS and Planck HFI Observations
• A Spitzer IRAC Measure of the Zodiacal Light
• Zodiacal Light Beyond Earth Orbit Observed with Pioneer 10
• Low-phase spectral reflectance and equivalent geometric albedo of meteorites powders
• Dark matter powered stars: Constraints from the extragalactic background light
• GAMA/DEVILS: Cosmic star formation and AGN activity over 12.5 billion years
• Measurements of the Zodiacal Light Absolute Intensity through Fraunhofer Absorption Line Spectroscopy with CIBER
• SKYSURF: Constraints on Zodiacal Light and Extragalactic Background Light through Panchromatic HST All-Sky Surface-Brightness Measurements: II. First Limits on Diffuse Light at 1.25, 1.4, and 1.6 microns
• The isotropic interplanetary dust cloud and near-infrared extragalactic background light observed with COBE/DIRBE
• High-resolution Imaging of the Gegenschein and the Geometric Albedo of Interplanetary Dust
• MIRIS observation of near-infrared diffuse Galactic light
• The SPHEREx Sky Simulator: Science Data Modeling for the First All-Sky Near-Infrared Spectral Survey
• SKYSURF-4: Panchromatic HST All-Sky Surface-Brightness Measurement Methods and Results
• Towards a data-driven model of the sky from low Earth orbit as observed by the Hubble Space Telescope
• Polarization spectrum of near infrared zodiacal light observed with CIBER
• Near-infrared Polarization Charateristics of the Zodiacal Light Observed with DIRBE/COBE
• Deep Large Binocular Camera r-band Observations of the GOODS-N Field
• The Cosmic Infrared Background Experiment-2: An Intensity Mapping Optimized Sounding-rocket Payload to Understand the Near-IR Extragalactic Background Light
• Impact of hot exozodiacal dust on the polarimetric analysis of close-in exoplanets