Spatial segregation of dust grains in transition disks. SPHERE observations of 2MASS J16083070-3828268 and RXJ1852.3-3700

Abstract

Context. The mechanisms governing the opening of cavities in transition disks are not fully understood. Several processes have been proposed but their occurrence rate is still unknown. Aims. We present spatially resolved observations of two transition disks and aim at constraining their vertical and radial structure using multiwavelength observations. Methods. We have obtained near-IR scattered light observations with VLT/SPHERE of the transition disks J1608 and J1852. We complement our datasets with ALMA observations and with unresolved photometric observations covering a wide range of wavelengths. We performed radiative transfer modeling to analyze the morphology of the disks and compare the results with a sample of 20 other transition disks observed with both SPHERE and ALMA. Results. The scattered light image of J1608 reveals a very inclined disk, with two bright lobes and a large cavity. J1852 shows an inner ring extending beyond the coronagraphic radius up to 15au, a gap and a second ring at 42au. Our radiative transfer model of J1608 indicates that the millimeter-sized grains are less extended vertically and radially than the micron-sized grains, indicating advanced settling and radial drift. We find good agreement with the observations of J1852 with a similar model, but due to the low inclination of the system, the model remains partly degenerate. The analysis of 22 transition disks shows that, in general, the cavities observed in scattered light are smaller than the ones detected at millimeter wavelengths. Conclusions. The analysis of a sample of transition disks indicates that the small grains can flow inward of the region where millimeter grains are trapped. While 15 out of the 22 cavities in our sample could be explained by a planet of less than 13 Jupiter masses, the others either require the presence of a more massive companion or of several low-mass planets.

Accepted in Astronomy and Astrophysics

References in corpus (34)

• VOSA: Virtual Observatory SED Analyzer. An application to the Collinder 69 open cluster
• X-Shooter spectroscopy of young stellar objects in Lupus: Accretion properties of class II and transitional objects
• Monte Carlo radiative transfer in protoplanetary disks
• Gaps, Rings, and Non-Axisymmetric Structures in Protoplanetary Disks - From Simulations to ALMA Observations
• Spiral Density Waves in a Young Protoplanetary Disk
• Asymmetric features in the protoplanetary disk MWC758
• Shadows and spirals in the protoplanetary disk HD 100453
• Mapping the Shores of the Brown Dwarf Desert I.: Upper Scorpius
• Dust settling in local simulations of turbulent protoplanetary disks
• Cavity opening by a giant planet in a protoplanetary disc and effects on planetary migration
• Discovery of a Companion Candidate in the HD169142 Transition Disk and the Possibility of Multiple Planet Formation
• On the gas content of transitional disks: a VLT/X-Shooter study of accretion and winds
• Different dust and gas radial extents in protoplanetary disks: consistent models of grain growth and CO emission
• Direct detection of scattered light gaps in the transitional disk around HD 97048 with VLT/SPHERE
• Can grain growth explain transition disks?
• Can dead zones create structures like a transition disk?
• An Enigmatic Pointlike Feature within the HD 169142 Transitional Disk
• Recovery of the Candidate Protoplanet HD 100546 b with Gemini/NICI and Detection of Additional (Planet-Induced?) Disk Structure at Small Separations
• Multiple rings in the transition disk and companion candidates around RXJ1615.3-3255. High contrast imaging with VLT/SPHERE
• A cavity and further radial substructures in the disk around HD~97048
• An opening criterion for dust gaps in protoplanetary discs
• The circumstellar disk HD169142: gas, dust and planets acting in concert?
• Probing stellar accretion with mid-infrared hydrogen lines
• Spatial separation of small and large grains in the transitional disk around the young star IRS 48
• Comparison of the dust and gas radial structure in the transition disk [PZ99] J160421.7-213028
• Resolving the planet-hosting inner regions of the LkCa 15 disk
• Investigation of the inner structures around HD169142 with VLT/SPHERE
• Variable dynamics in the inner disk of HD 135344B revealed with multi-epoch scattered light imaging
• HD 169142 in the eyes of ZIMPOL/SPHERE
• A 80 au cavity in the disk around HD 34282
• ALMA study of the HD 100453 AB system and the tidal interaction of the companion with the disk
• New constraints on the disk characteristics and companion candidates around T Cha with VLT/SPHERE
• HST Scattered Light Imaging and Modeling of the Edge-on Protoplanetary Disk ESO-H$\alpha$ 569
• Herschel-PACS observations of far-IR lines in YSOs I: [OI] and H2O at 63 microns

Cited by in corpus (37)

• A highly settled disk around Oph 163131
• A stellar mass dependence of structured disks: a possible link with exoplanet demographics
• Perturbers: SPHERE detection limits to planetary-mass companions in protoplanetary disks
• Gap, shadows, spirals, streamers: SPHERE observations of binary-disk interactions in GG Tau A
• On the secular evolution of the ratio between gas and dust radii in protoplanetary discs
• Steady-state accretion in magnetized protoplanetary disks
• Transition disks: the observational revolution from SEDs to imaging
• Kinematics and brightness temperatures of transition discs -- A survey of gas substructures as seen with ALMA
• Large gaps and high accretion rates in photoevaporative transition disks with a dead zone
• Dual-Wavelength ALMA Observations of Dust Rings in Protoplanetary Disks
• exoALMA IV: Substructures, Asymmetries, and the Faint Outer Disk in Continuum Emission
• The Giant Accreting Protoplanet Survey (GAPlanetS) -- Results from a Six Year Campaign to Image Accreting Protoplanets
• ISPY-NACO Imaging Survey for Planets around Young stars. The demographics of forming planets embedded in protoplanetary disks
• A high-resolution survey of protoplanetary disks in Lupus and the nature of compact disks
• An Inner Disk in the Large Gap of the Transition Disk SR 24S
• Observed polarized scattered light phase functions of planet-forming disks
• Dust Traps and the Formation of Cavities in Transition Discs: A millimetre to sub-millimetre comparison survey
• The edge-on protoplanetary disk HH 48 NE I. Modeling the geometry and stellar parameters
• Self-consistent modelling of the dust component in protoplanetary and circumplanetary disks: the case of PDS 70
• Quantitative polarimetry of the disk around HD 169142
• External or internal companion exciting the spiral arms in CQ Tau?
• The impact of dust evolution on the dead zone outer edge in magnetized protoplanetary disks
• Dust entrainment in photoevaporative winds: Densities and imaging
• A millimeter-multiwavelength continuum study of VLA 1623 West
• Improving Planet Detection with Disk Modeling: Keck/NIRC2 Imaging of the HD 34282 Single-armed Protoplanetary Disk
• NaCo polarimetric observations of Sz 91 transitional disk: a remarkable case of dust filtering
• Distributions of gas and small and large grains in the LkH$\alpha 330$ disk trace a young planetary system
• Near-IR observations of the young star [BHB2007]-1: A sub-stellar companion opening the gap in the disk
• The grazing angle icy protoplanetary disk PDS 453
• Confirmation of a ring structure in the disk around MP Mus (PDS 66) with ALMA Band 7 observations
• Planet-forming disks and their environment across regions and time from the full NIR census
• An HST/STIS View of Protoplanetary Disks in Upper Scorpius: Observations of Three Young M-Stars
• Scattering and sublimation: a multi-scale view of $\mu$m-sized dust in the inclined disc of HD 145718
• Dust evolution in pre-stellar cores
• Peering through the veil: Investigating protoplanetary disk outer edges using backside visibility
• exoALMA XXIII. Estimating Disk and Planet Properties from Dust Morphologies with DBNets2.0
• Theoretical model of HD 163296 presently forming in-situ planets and comparison with the models of AS 209, HL Tau, and TW Hya