SCExAO/CHARIS Multi-Wavelength, High-Contrast Imaging of the BD+45${}^{\circ }$598 Debris Disk

Abstract

We present a multi-wavelength (1.16$\mu$m-2.37$\mu$m) view of the debris disk around BD+45${}^{\circ }$598, using the Subaru Coronagraphic Extreme Adaptive Optics system paired with the Coronagraphic High Angular Resolution Imaging Spectrograph. With an assumed age of 23 Myr, this source allows us to study the early evolution of debris disks and search for forming planets. We fit a scattered light model to our disk using a differential evolution algorithm, and constrain its geometry. We find the disk to have a peak density radius of $R_0=109.6$ au, an inclination of $i=88.1^{\circ }$, and position angle $PA=111.0^{\circ }$. While we do not detect a substellar companion in the disk, our calculated contrast limits indicate sensitivity to planets as small as $\sim 10M_{\mathrm{Jup}}$ at a projected separation of 12 au of the star, and as small as $\sim 4M_{\mathrm{Jup}}$ beyond 38 au. When measuring intensity as a function of wavelength, the disk color constrains the minimum dust grain size within a range of $\sim 0.13$ to 1.01$\mu$m.

arXiv comment22 pages, 12 figures; Accepted to AJ

References in corpus (39)

• Astropy: A Community Python Package for Astronomy
• The Astropy Project: Building an inclusive, open-science project and status of the v2.0 core package
• Evolutionary models for cool brown dwarfs and extrasolar giant planets. The case of HD 20945
• Protoplanetary Disks and Their Evolution
• Angular Differential Imaging: a Powerful High-Contrast Imaging Technique
• A new algorithm for point spread function subtraction in high-contrast imaging: a demonstration with angular differential imaging
• The Subaru Coronagraphic Extreme Adaptive Optics system: enabling high-contrast imaging on solar-system scales
• Debris Disks: Structure, Composition, and Variability
• A Combined Subaru/VLT/MMT 1--5 Micron Study of Planets Orbiting HR 8799: Implications for Atmospheric Properties, Masses, and Formation
• Imaging Spectroscopy for Extrasolar Planet Detection
• Variations on Debris Disks: Icy Planet Formation at 30-150 AU for 1-3 Solar Mass Main Sequence Stars
• The Extremely Red, Young L Dwarf PSO J318-22: A Free-Floating Planetary-Mass Analog to Directly Imaged Young Gas-Giant Planets
• Collisional Cascades in Planetesimal Disks II. Embedded Planets
• Debris disc stirring by secular perturbations from giant planets
• Images of Embedded Jovian Planet Formation At A Wide Separation Around AB Aurigae
• Direct Imaging Confirmation and Characterization of a Dust-Enshrouded Candidate Exoplanet Orbiting Fomalhaut
• Characterizing 51 Eri b from 1-5 $\mu$m: a partly-cloudy exoplanet
• A Combined VLT and Gemini Study of the Atmosphere of the Directly-Imaged Planet, beta Pictoris b
• The near-infrared spectral energy distribution of β Pictoris b
• No Clear, Direct Evidence for Multiple Protoplanets Orbiting LkCa 15: LkCa 15 bcd are Likely Inner Disk Signals
• Spiral Structure when Setting up Pericentre Glow: Possible Giant Planets at Hundreds of AU in the HD141569 Disk
• The dust grain size - stellar luminosity trend in debris discs
• Self-consistent size and velocity distributions of collisional cascades
• AF Lep b: the lowest mass planet detected coupling astrometric and direct imaging data
• Imaging Discovery of the Debris Disk Around HIP 79977
• Direct Imaging and Astrometric Detection of a Gas Giant Planet Orbiting an Accelerating Star
• A spectroscopic survey of the youngest field stars in the solar neighbourhood. I. The optically bright sample
• Direct Imaging Discovery and Dynamical Mass of a Substellar Companion Orbiting an Accelerating Hyades Sun-like Star with SCExAO/CHARIS
• SCExAO/CHARIS Near-Infrared Direct Imaging, Spectroscopy, and Forward-Modeling of kappa And b: A Likely Young, Low-Gravity Superjovian Companion
• Subaru/SCExAO First-Light Direct Imaging of a Young Debris Disk around HD 36546
• SCExAO/MEC and CHARIS Discovery of a Low Mass, 6 AU-Separation Companion to HIP 109427 using Stochastic Speckle Discrimination and High-Contrast Spectroscopy
• VLT/SPHERE Multi-Wavelength High-Contrast Imaging of the HD 115600 Debris Disk: New Constraints on the Dust Geometry and the Presence of Young Giant Planets
• Direct-imaging Discovery of a Substellar Companion Orbiting the Accelerating Variable Star, HIP 39017
• Diagnosing Circumstellar Debris Disks
• AO3000 at Subaru: Combining for the first time a NIR WFS using First Light's C-RED ONE and ALPAO's 64x64 DM
• Stumbling over planetary building blocks: AU Microscopii as an example of the challenge of retrieving debris-disk dust properties
• Discovery of an Edge-on Circumstellar Debris Disk Around BD+45${}^{\circ }$598: a Newly Identifed Member of the $\beta$ Pictoris Moving Group
• SCExAO and Keck Direct Imaging Discovery of a Low-Mass Companion Around the Accelerating F5 Star HIP 5319
• Multiband imaging of the HD 36546 debris disk: a refined view from SCExAO/CHARIS