A Multi-Wavelength Analysis of Dust and Gas in the SR 24S Transition Disk

Abstract

We present new Atacama Large Millimeter/sub-millimeter Array (ALMA) 1.3 mm continuum observations of the SR 24S transition disk with an angular resolution $\lesssim 0.18"$ (12 au radius). We perform a multi-wavelength investigation by combining new data with previous ALMA data at 0.45 mm. The visibilities and images of the continuum emission at the two wavelengths are well characterized by a ring-like emission. Visibility modeling finds that the ring-like emission is narrower at longer wavelengths, in good agreement with models of dust trapping in pressure bumps, although there are complex residuals that suggest potentially asymmetric structures. The 0.45 mm emission has a shallower profile inside the central cavity than the 1.3 mm emission. In addition, we find that the ${}^{13}$CO and C${}^{18}$O (J=2-1) emission peaks at the center of the continuum cavity. We do not detect either continuum or gas emission from the northern companion to this system (SR 24N), which is itself a binary system. The upper limit for the dust disk mass of SR 24N is $\lesssim 0.12M_{⨁}$, which gives a disk mass ratio in dust between the two components of $M_{\mathrm{dust},\mathrm{SR}24S}/M_{\mathrm{dust},\mathrm{SR}24N}\gtrsim 840$. The current ALMA observations may imply that either planets have already formed in the SR 24N disk or that dust growth to mm-sizes is inhibited there and that only warm gas, as seen by ro-vibrational CO emission inside the truncation radii of the binary, is present.

Accepted for publication in ApJ

References in corpus (25)

• Ringed Substructure and a Gap at 1 AU in the Nearest Protoplanetary Disk
• Ring shaped dust accumulation in transition disks
• Gaps, Rings, and Non-Axisymmetric Structures in Protoplanetary Disks - From Simulations to ALMA Observations
• Accretion in the Rho-Oph pre-main sequence stars
• Spiral Density Waves in a Young Protoplanetary Disk
• ALMA unveils rings and gaps in the protoplanetary system HD 169142: signatures of two giant protoplanets
• Shadows cast on the transition disk of HD 135344B. Multiwavelength VLT/SPHERE polarimetric differential imaging
• The minimum mass of detectable planets in protoplanetary discs and the derivation of planetary masses from high resolution observations
• Gas density drops inside dust cavities of transitional disks around young stars observed with ALMA
• Direct detection of scattered light gaps in the transitional disk around HD 97048 with VLT/SPHERE
• Determining protoplanetary disk gas masses from CO isotopologues line observations
• A VLT/NACO Survey for Triple and Quadruple Systems among Visual Pre-Main Sequence Binaries
• Testing the theory of grain growth and fragmentation by millimeter observations of protoplanetary disks
• Can dead zones create structures like a transition disk?
• On the Distance to the Ophiuchus Star-Forming Region
• Multiple rings in the transition disk and companion candidates around RXJ1615.3-3255. High contrast imaging with VLT/SPHERE
• On the Commonality of 10-30AU Sized Axisymmetric Dust Structures in Protoplanetary Disks
• CO gas inside the protoplanetary disk cavity in HD 142527: disk structure from ALMA
• Direct Imaging of Bridged Twin Protoplanetary Disks in a Young Multiple Star
• Two mechanisms for dust gap opening in protoplanetary discs
• Millimetre spectral indices of transition disks and their relation to the cavity radius
• ALMA reveals the anatomy of the mm-sized dust and molecular gas in the HD 97048 disk
• A ring-like concentration of mm-sized particles in Sz 91
• Investigating dust trapping in transition disks with millimeter-wave polarization
• Constraining turbulence mixing strength in transitional discs with planets using SPHERE and ALMA

Cited by in corpus (29)

• Observations of Protoplanetary Disk Structures
• Highly structured disk around the planet host PDS 70 revealed by high-angular resolution observations with ALMA
• The Ophiuchus DIsc Survey Employing ALMA (ODISEA)-III: the evolution of substructures in massive discs at 3-5 au resolution
• New insights into the nature of transition disks from a complete disk survey of the Lupus star forming region
• Characterizing the dust content of disk substructures in TW Hya
• Homogeneous Analysis of the Dust Morphology of Transition Disks Observed with ALMA: Investigating dust trapping and the origin of the cavities
• High-Resolution ALMA Observations of HD100546: Asymmetric Circumstellar Ring, and Circumplanetary Disk Upper Limits
• Spiral Arms and a Massive Dust Disk with non-Keplerian Kinematics: Possible Evidence for Gravitational Instability in the Disk of Elias 2-27
• Inferring giant planets from ALMA millimeter continuum and line observations in (transition) disks
• Size and structures of disks around very low mass stars in the Taurus star-forming region
• New Constraints From Dust Lines On The Surface Densities Of Protoplanetary Disks
• Multiple rings in the transitional disk of GM Aurigae revealed by VLA and ALMA
• Transition disks: the observational revolution from SEDs to imaging
• Strongly misaligned triple system in SR 24 revealed by ALMA
• A multi-instrument and multi-wavelength high angular resolution study of MWC614: quantum heated particles inside the disk cavity
• Resolved millimeter-dust continuum cavity around the very low mass young star CIDA 1
• The Flared Gas Structure of the Transitional Disk around Sz 91
• An Inner Disk in the Large Gap of the Transition Disk SR 24S
• 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
• Orbital Motion of Young Binaries in Ophiuchus and Upper Centaurus-Lupus
• Is the gap in the DS Tau disc hiding a planet?
• Kinematical signs of dust trapping and feedback in a local pressure bump in the protoplanetary disk around HD 142527 revealed with ALMA
• Herschel Observations of Protoplanetary Disks in Lynds 1641
• CAMPOS II. The onset of protostellar disk substructures and planet formation
• Constraining giant planet formation with synthetic ALMA images of the Solar System's natal protoplanetary disk
• 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 origin of transition disk cavities: Pebble-accreting protoplanets vs Super-Jupiters