Constraining the properties of the potential embedded planets in the disk around HD 100546

Abstract

Context. The protoplanetary disk around the star HD 100546 displays prominent substructures in the form of two concentric rings. Recent observations with the Atacama Large Millimeter/sub-millimeter Array (ALMA) have revealed these features with high angular resolution and have resolved the faint outer ring well. This allows us to study the nature of the system further. Aims. Our aim is to constrain some of the properties of potential planets embedded in the disk, assuming that they induce the observed rings and gaps. Methods. We present the self-calibrated $0.9$mm ALMA observations of the dust continuum emission from the circumstellar disk around HD 100546. These observations reveal substructures in the disk that are consistent with two rings, the outer ring being much fainter than the inner one. We reproduced this appearance closely with a numerical model that assumes two embedded planets. We varied planet and disk parameters in the framework of the planet-disk interaction code FARGO3D and used the outputs for the gas and dust distribution to generate synthetic observations with the code RADMC-3D. Results. From this comparison, we find that an inner planet located at $r_1=13$au with a mass $M_1=8M_{\mathrm{Jup}}$ and an outer planet located at $r_2=143$au with a mass $M_2=3M_{\mathrm{Jup}}$ leads to the best agreement between synthetic and ALMA observations (deviation less than $3\sigma$ for the normalized radial profiles). To match the very low brightness of the outer structure relative to the inner ring, the initial disk gas surface density profile needs to follow an exponentially tapered power law (self-similar solution), rather than a simple power-law profile.

arXiv commentAccepted for publication in A&A

References in corpus (44)

• First Results from High Angular Resolution ALMA Observations Toward the HL Tau Region
• The Disk Substructures at High Angular Resolution Project (DSHARP): I. Motivation, Sample, Calibration, and Overview
• The Mass Dependence Between Protoplanetary Disks and their Stellar Hosts
• ALMA Survey of Lupus Protoplanetary Disks I: Dust and Gas Masses
• On the width and shape of gaps in protoplanetary disks
• Gaps and Rings in an ALMA Survey of Disks in the Taurus Star-forming Region
• The effect of dust settling on the appearance of protoplanetary disks
• Ring shaped dust accumulation in transition disks
• Observations of Protoplanetary Disk Structures
• Dust filtration at gap edges: Implications for the spectral energy distributions of discs with embedded planets
• FARGO3D: A new GPU-oriented MHD code
• Gaia Early Data Release 3: Summary of the contents and survey properties
• Transitional Disks as Signposts of Young, Multiplanet Systems
• A young protoplanet candidate embedded in the circumstellar disk of HD100546
• Multiple Disk Gaps and Rings Generated by a Single Super-Earth
• The minimum mass of detectable planets in protoplanetary discs and the derivation of planetary masses from high resolution observations
• The newborn planet population emerging from ring-like structures in discs
• Resolving the HD 100546 Protoplanetary System with the Gemini Planet Imager: Evidence for Multiple Forming, Accreting Planets
• Can dead zones create structures like a transition disk?
• Dust Trapping by Vortices in Transitional Disks: Evidence for Non-ideal MHD Effects in Protoplanetary Disks
• ALMA hints at the presence of two companions in the disk around HD 100546
• Asymptotically stable numerical method for multispecies momentum transfer: gas and multifluid-dust test suite and implementation in FARGO3D
• The Ophiuchus DIsc Survey Employing ALMA (ODISEA)-III: the evolution of substructures in massive discs at 3-5 au resolution
• Multiple Disk Gaps and Rings Generated by a Single Super-Earth: II. Spacings, Depths, and Number of Gaps, with Application to Real Systems
• Recovery of the Candidate Protoplanet HD 100546 b with Gemini/NICI and Detection of Additional (Planet-Induced?) Disk Structure at Small Separations
• The accretion rates and mechanisms of Herbig Ae/Be stars
• Gap Opening in 3D: Single Planet Gaps
• Complex Spiral Structure in the HD 100546 Transitional Disk as Revealed by GPI and MagAO
• On the Commonality of 10-30AU Sized Axisymmetric Dust Structures in Protoplanetary Disks
• Gas and dust structures in protoplanetary disks hosting multiple planets
• NIR Spectroscopy of the HAeBe Star HD 100546: III. Further Evidence of an Orbiting Companion?
• Redistribution of CO at the Location of the CO Ice Line in evolving Gas and Dust Disks
• Kinematic detections of protoplanets: a Doppler-flip in the disk of HD100546
• Inferring giant planets from ALMA millimeter continuum and line observations in (transition) disks
• Sequential planet formation in the HD 100546 protoplanetary disk?
• Long Baseline Observations of the HD100546 Protoplanetary Disk with ALMA
• The formation of rings and gaps in wind-launching non-ideal MHD disks: three-dimensional simulations
• Predicting the observational signature of migrating Neptune-sized planets in low-viscosity disks
• Limits on Millimeter Continuum Emission from Circumplanetary Material in the DSHARP Disks
• Edge modes in self-gravitating disc-planet interactions
• Influence of planetary gas accretion on the shape and depth of gaps in protoplanetary discs
• Protoplanetary disks including radiative feedback from accreting planets
• ALMA 870 $\mu$m continuum observations of HD 100546. Evidence of a giant planet on a wide orbit
• Resolved millimeter-dust continuum cavity around the very low mass young star CIDA 1