Disk Evolution Study Through Imaging of Nearby Young Stars (DESTINYS): Scattered light detection of a possible disk wind in RY Tau

Abstract

Disk winds are an important mechanism for accretion and disk evolution around young stars. The accreting intermediate-mass T-Tauri star RY Tau has an active jet and a previously known disk wind. Archival optical and new near-infrared observations of the RY Tau system show two horn-like components stretching out as a cone from RY Tau. Scattered light from the disk around RY Tau is visible in near-infrared but not seen at optical wavelengths. In the near-infrared, dark wedges that separates the horns from the disk, indicating we may see the scattered light from a disk wind. We use archived ALMA and SPHERE/ZIMPOL I-band observations combined with newly acquired SPEHRE/IRDIS H-band observations and available literature to build a simple geometric model of the RY Tau disk and disk wind. We use Monte Carlo radiative transfer modelling \textit{MCMax3D} to create comparable synthetic observations that test the effect of a dusty wind on the optical effect in the observations. We constrain the grain size and dust mass needed in the disk wind to reproduce the effect from the observations. A model geometrically reminiscent of a dusty disk wind with small micron to sub-micron size grains elevated above the disk can reproduce the optical effect seen in the observations. The mass in the obscuring component of the wind has been constrained to $1\times 10^{-9}{M}_{\odot }\le M\le 5\times 10^{-8}{M}_{\odot }$ which corresponds to a lower limit mass loss rate in the wind of about $\sim 1\times 10^{-8}{M}_{\odot }{\mathrm{yr}}^{-1}$. While an illuminate dust cavity cannot be ruled out without measurements of the gas velocity, we argue that a magnetically launched disk wind is the most likely scenario.

11 pages, 5 figures

References in corpus (28)

• The Gaia mission
• A Three-Dimensional View of Turbulence: Constraints on Turbulent Motions in the HD 163296 Protoplanetary Disk using DCO${}^{+}$
• Radiative transfer in very optically thick circumstellar disks
• MHD simulations of jet acceleration from Keplerian accretion disks: the effects of disk resistivity
• Measuring turbulent motion in planet-forming disks with ALMA: A detection around DM Tau and non-detections around MWC 480 and V4046 Sgr
• The polarimetric imaging mode of VLT/SPHERE/IRDIS II: Characterization and correction of instrumental polarization effects
• The polarimetric imaging mode of VLT/SPHERE/IRDIS I: Description, data reduction and observing strategy
• Disk Evolution Study Through Imaging of Nearby Young Stars (DESTINYS): Late infall causing disk misalignment and dynamic structures in SU Aur
• X-Shooter spectroscopy of young stellar objects: V - Slow winds in T Tauri stars
• ALMA reveals a large structured disk and nested rotating outflows in DG Tau B
• HD100546 Multi-Epoch Scattered-Light Observations
• Disks Around T Tauri Stars with SPHERE (DARTTS-S) II: Twenty-one new polarimetric images of young stellar disks
• The dispersal of protoplanetary discs. II: Photoevaporation models with observationally derived irradiating spectra
• The T Tauri star RY Tau as a case study of the inner regions of circumstellar dust disks
• Far-infrared to millimeter data of protoplanetary disks: dust growth in the Taurus, Ophiuchus, and Chamaeleon I star-forming regions
• Scanning disk rings and winds in CO at 0.01-10 au: a high-resolution $M$-band spectroscopy survey with IRTF-iSHELL
• The Gould Belt Very Large Array Survey IV: The Taurus-Auriga complex
• GIARPS High-resolution Observations of T Tauri stars (GHOsT). II. Connecting atomic and molecular winds in protoplanetary disks
• Modeling the delivery of dust from discs to ionized winds
• A Search for Consistent Jet and Disk Rotation Signatures in RY Tau
• An all-sky catalog of solar-type dwarfs for exoplanetary transit surveys
• GIARPS High-resolution Observations of T Tauri stars (GHOsT). III. A pilot study of stellar and accretion properties
• What happened before? -- The disks around the precursors of young Herbig Ae/Be stars
• Dust entrainment in magnetically and thermally driven disk winds
• The inner disk of RY Tau: evidence of stellar occultation by the disk atmosphere at the sublimation rim from K-band continuum interferometry
• Determining dispersal mechanisms of protoplanetary disks using accretion and wind mass loss rates
• Linear dust polarization during the embedded phase of protostar formation
• Dust entrainment in photoevaporative winds: Synthetic observations of transition disks

Cited by in corpus (4)

• [OI] 6300Å emission as a probe of external photoevaporation of protoplanetary discs
• Spatial distribution of crystalline silicates in protoplanetary disks: How to interpret mid-infrared observations
• Peering through the veil: Investigating protoplanetary disk outer edges using backside visibility
• The MATISSE view of the inner region of the RY Tau protoplanetary disk