An Inner Disk in the Large Gap of the Transition Disk SR 24S

Abstract

We report new Atacama Large Millimeter/sub-millimeter Array (ALMA) Band 3 observations at 2.75 mm of the TD around SR 24S with an angular resolution of $\sim$0.11''$\times$ 0.09'' and a peak signal-to-noise ratio of $\sim 24$. We detect an inner disk and a mostly symmetric ring-like structure that peaks at $\sim$0.32'', that is $\sim$37 au at a distance of $\sim$114.4 pc. The full width at half maximum of this ring is $\sim$28 au. We analyze the observed structures by fitting the dust continuum visibilities using different models for the intensity profile, and compare with previous ALMA observations of the same disk at 0.45 mm and 1.30 mm. We qualitatively compare the results of these fits with theoretical predictions of different scenarios for the formation of a cavity or large gap. The comparison of the dust continuum structure between different ALMA bands indicates that photoevaporation and dead zone can be excluded as leading mechanisms for the cavity formation in SR 24S disk, leaving the planet scenario (single or multiple planets) as the most plausible mechanism. We compared the 2.75 mm emission with published (sub-)centimeter data and find that the inner disk is likely tracing dust thermal emission. This implies that any companion in the system should allow dust to move inwards throughout the gap and replenish the inner disk. In the case of one single planet, this puts strong constraints on the mass of the potential planet inside the cavity and the disk viscosity of about $\lesssim$5 $M_{\mathrm{Jup}}$ and $\alpha \sim 10^{-4}-10^{-3}$, respectively.

arXiv commentAccepted to ApJ

References in corpus (58)

• emcee: The MCMC Hammer
• Gaia Data Release 2. Summary of the contents and survey properties
• The Disk Substructures at High Angular Resolution Project (DSHARP): I. Motivation, Sample, Calibration, and Overview
• A simple model for the evolution of the dust population in protoplanetary disks
• The Mass Dependence Between Protoplanetary Disks and their Stellar Hosts
• Discovery of a planetary-mass companion within the gap of the transition disk around PDS 70
• Resolved Images of Large Cavities in Protoplanetary Transition Disks
• Gaps and Rings in an ALMA Survey of Disks in the Taurus Star-forming Region
• On the Submillimeter Opacity of Protoplanetary Disks
• The Disk Substructures at High Angular Resolution Project (DSHARP): II. Characteristics of Annular Substructures
• A Steeper than Linear Disk Mass-Stellar Mass Scaling Relation
• Ring shaped dust accumulation in transition disks
• Dust Properties of Protoplanetary Disks in the Taurus-Auriga Star Forming Region from Millimeter Wavelengths
• Zonal Flows and Long-Lived Axisymmetric Pressure Bumps in Magnetorotational Turbulence
• The Disk Substructures at High Angular Resolution Project (DSHARP) VI: Dust trapping in thin-ringed protoplanetary disks
• Gaps, Rings, and Non-Axisymmetric Structures in Protoplanetary Disks - From Simulations to ALMA Observations
• The Disk Substructures at High Angular Resolution Project (DSHARP): V. Interpreting ALMA maps of protoplanetary disks in terms of a dust model
• Accretion in the Rho-Oph pre-main sequence stars
• A Kinematical Detection of Two Embedded Jupiter Mass Planets in HD 163296
• Dust filtration at gap edges: Implications for the spectral energy distributions of discs with embedded planets
• Transitional and Pre-Transitional disks: Gap Opening by Multiple Planets?
• Dust grain growth in rho-Ophiuchi protoplanetary disks
• Dust dynamics during protoplanetary disc clearing
• Observational Signatures of Planets in Protoplanetary Disks II: Spiral Arms Observed in Scattered Light Imaging Can be Induced by Planets
• LkH$\alpha$ 330: Evidence for dust clearing through resolved submillimeter imaging
• Evidence for dust clearing through resolved submillimeter imaging
• The Structure of Spiral Shocks Excited by Planetary-mass Companions
• A young protoplanet candidate embedded in the circumstellar disk of HD100546
• Dust flow in gas disks in the presence of embedded planets
• Multiple Disk Gaps and Rings Generated by a Single Super-Earth
• On the Formation of Planetesimals via Secular Gravitational Instabilities with Turbulent Stirring
• The Eccentric Cavity, Triple Rings, Two-Armed Spirals, and Double Clumps of the MWC 758 Disk
• Gas density drops inside dust cavities of transitional disks around young stars observed with ALMA
• Tidal Truncation of Inclined Circumstellar and Circumbinary Discs in Young Stellar Binaries
• The Disk Substructures at High Angular Resolution Project (DSHARP): IV. Characterizing substructures and interactions in disks around multiple star systems
• Can dead zones create structures like a transition disk?
• New insights into the nature of transition disks from a complete disk survey of the Lupus star forming region
• Evolution of protoplanetary disks from their taxonomy in scattered light: spirals, rings, cavities, and shadows
• Imaging diagnostics for transitional discs
• Evidence for a massive dust-trapping vortex connected to spirals: a multi-wavelength analysis of the HD~135344B protoplanetary disk
• Homogeneous Analysis of the Dust Morphology of Transition Disks Observed with ALMA: Investigating dust trapping and the origin of the cavities
• Discovery of a point-like source and a third spiral arm in the transition disk around the Herbig Ae star MWC 758
• Direct Imaging of Bridged Twin Protoplanetary Disks in a Young Multiple Star
• An Optical/near-infrared investigation of HD 100546 b with the Gemini Planet Imager and MagAO
• A search for accreting young companions embedded in circumstellar disks: High-contrast H$\alpha$ imaging with VLT/SPHERE
• Testing particle trapping in transition disks with ALMA
• A tunnel and a traffic jam: How transition disks maintain a detectable warm dust component despite the presence of a large planet-carved gap
• Millimetre spectral indices of transition disks and their relation to the cavity radius
• Spatial segregation of dust grains in transition disks. SPHERE observations of 2MASS J16083070-3828268 and RXJ1852.3-3700
• Diverse protoplanetary disk morphology produced by a Jupiter-mass planet
• Planet gaps in the dust layer of 3D protoplanetary disks. II. Observability with ALMA
• Shallow Cavities in Multiple-Planet Systems
• A Multi-Wavelength Analysis of Dust and Gas in the SR 24S Transition Disk
• An Ionized Outflow from AB Aur, a Herbig Ae Star with a Transitional Disk
• Imaging the photoevaporating disk and radio jet of GM Aur
• Constraining turbulence mixing strength in transitional discs with planets using SPHERE and ALMA
• Strongly misaligned triple system in SR 24 revealed by ALMA
• 3.3 cm JVLA observations of transitional disks: searching for centimeter pebbles

Cited by in corpus (20)

• Dust depleted inner disks in a large sample of transition disks through long-baseline ALMA observations
• The Ophiuchus DIsc Survey Employing ALMA (ODISEA)-III: the evolution of substructures in massive discs at 3-5 au resolution
• Disc Tearing and Bardeen-Petterson Alignment in GRMHD Simulations of Highly Tilted Thin Accretion Discs
• A multi-frequency ALMA characterization of substructures in the GM Aur protoplanetary disk
• On the accuracy of the ALMA flux calibration in the time domain and across spectral windows
• Transition disks: the observational revolution from SEDs to imaging
• Large gaps and high accretion rates in photoevaporative transition disks with a dead zone
• Dual-Wavelength ALMA Observations of Dust Rings in Protoplanetary Disks
• A bright inner disk and structures in the transition disk around the very low-mass star CIDA 1
• Forbidden emission lines in protostellar outflows and jets with MUSE
• Dust Traps and the Formation of Cavities in Transition Discs: A millimetre to sub-millimetre comparison survey
• The SPHERE view of three interacting twin disc systems in polarised light
• Gap Opening and Inner Disk Structure in the Strongly Accreting Transition Disk of DM Tau
• FAUST. XVIII. Evidence for annular substructure in a very young Class 0 disk
• Lyman-alpha Scattering Models Trace Accretion and Outflow Kinematics in T Tauri Systems
• Millimeter emission in photoevaporating disks is determined by early substructures
• SUBARU Near-Infrared Imaging Polarimetry of Misaligned Disks Around The SR24 Hierarchical Triple System
• Gas distribution in ODISEA sources from ALMA long-baseline observations in ${}^{12}$CO(2-1)
• On the evolution of vortex in locally isothermal self-gravitating discs: a parameter study
• Characterization of the dust content in the ring around Sz 91: indications for planetesimal formation?