Kinematical signatures: Distinguishing between warps and radial flows
arXiv:2410.14457 · doi:10.1051/0004-6361/202451145
Abstract
Increasing evidence shows that warped disks are common, challenging the methods used to model their velocity fields. Molecular line emission of these disks is characterized by a twisted pattern, similar to the signal from radial flows, complicating the study of warped disk kinematics. Previous attempts to model these features have encountered difficulties in distinguishing between the underlying kinematics of different disks. This study aims to advance gas kinematics modeling capabilities by extending the Extracting Disk Dynamics () package to include warped geometries and radial flows. We assess the performance of in recovering input parameters for scenarios involving warps, radial flows, and combinations of the two. Additionally, we provide a basis to break the visual degeneracy between warped disks and radial flow, establishing a criterion to distinguish them. We extended the package to handle warped geometries by including a parametric prescription of a warped disk and a ray-casting algorithm to account for the surface self-obscuration arising from the 3D to 2D projection. The effectiveness of the tool was tested using the radiative transfer code , generating synthetic models for disks with radial flows, warped disks, and warped disks with radial flows. We demonstrate the efficacy of our tool in accurately recovering the geometrical parameters of systems, particularly in data with sufficient angular resolution. Importantly, we observe minimal impact from thermal noise levels typical in Atacama Large Millimeter/submillimeter Array (ALMA) observations. Furthermore, our findings reveal that fitting an incorrect model type produces characteristic residual signatures, which serve as kinematic criteria for disk classification.
arXiv comment15 pages, 9 figures; accepted for publication in A&A
References in corpus (63)
- Array Programming with NumPy
- emcee: The MCMC Hammer
- An atomic and molecular database for analysis of submillimetre line observations
- A Major Asymmetric Dust Trap in a Transition Disk
- Observations of gas flows inside a protoplanetary gap
- A planet on an inclined orbit as an explanation of the warp in the Beta Pictoris disk
- A Warped Accretion Disk and Wide Angle Outflow in the Inner Parsec of the Circinus Galaxy
- The Nature of SS433 and the Ultraluminous X-ray Sources
- Shadows cast by a warp in the HD 142527 protoplanetary disk
- Shadows and spirals in the protoplanetary disk HD 100453
- Warped accretion discs and the long periods in X-ray binaries
- A Multi-Ringed, Modestly-Inclined Protoplanetary Disk around AA Tau
- Flybys in protoplanetary discs: I. Gas and dust dynamics
- An intuitive 3D map of the Galactic warp's precession traced by classical Cepheids
- Accretion kinematics through the warped transition disk in HD142527 from resolved CO(6-5) observations
- Signatures of broken protoplanetary discs in scattered light and in sub-millimetre observations
- On the diversity of asymmetries in gapped protoplanetary disks
- The nature of the Class I population in Ophiuchus as revealed through gas and dust mapping
- The complex morphology of the young disk MWC 758: Spirals and dust clumps around a large cavity
- A compact concentration of large grains in the HD142527 protoplanetary dust trap
- A triple star system with a misaligned and warped circumstellar disk shaped by disk tearing
- Shadows and asymmetries in the T Tauri disk HD 143006: Evidence for a misaligned inner disk
- Chasing Shadows: Rotation of the Azimuthal Asymmetry in the TW Hya Disk
- The Disk Substructures at High Angular Resolution Project (DSHARP): X. Multiple rings, a misaligned inner disk, and a bright arc in the disk around the T Tauri star HD 143006
- A cavity and further radial substructures in the disk around HD~97048
- Discovery of a Two-Armed Spiral Structure in the Gapped Disk in HD 100453
- Automated Kinematic Modelling of Warped Galaxy Discs in Large Hi Surveys: 3D Tilted Ring Fitting of HI Emission Cubes
- An inner warp in the DoAr 44 T Tauri transition disk
- Kinematics of the CO Gas in the Inner Regions of the TW Hya Disk
- The dynamically disrupted gap in HD 142527
- Fast Radial Flows in Transition Disk Holes
- Misaligned disks induced by infall
- Flybys in protoplanetary discs: II. Observational signatures
- Spiral Arms and a Massive Dust Disk with non-Keplerian Kinematics: Possible Evidence for Gravitational Instability in the Disk of Elias 2-27
- Variable Outer Disk Shadowing Around the Dipper Star RX J1604.3-2130
- The Disc Miner I: A statistical framework to detect and quantify kinematical perturbations driven by young planets in discs
- Variable dynamics in the inner disk of HD 135344B revealed with multi-epoch scattered light imaging
- Shadowing and multiple rings in the protoplanetary disk of HD 139614
- Gap, shadows, spirals, streamers: SPHERE observations of binary-disk interactions in GG Tau A
- Warping a protoplanetary disc with a planet on an inclined orbit
- CO emission tracing a warp or radial flow within 100 au in the HD 100546 protoplanetary disk
- A catalog of warps in spiral and lenticular galaxies in the Southern hemisphere
- Generation of highly inclined protoplanetary discs through single stellar flybys
- Connecting the shadows: probing inner disk geometries using shadows in transitional disks
- 3D MHD Simulations of Accretion onto Stars with Tilted Magnetic and Rotational Axes
- GW Ori: Interactions Between a Triple-star System and its Circumtriple Disk in Action
- A highly non-Keplerian protoplanetary disc: Spiral structure in the gas disc of CQ Tau
- Disk structure around the Class I protostar L1489 IRS revealed by ALMA: a warped disk system
- ALMA Reveals a Misaligned Inner Gas Disk inside the Large Cavity of a Transitional Disk
- ALMA study of the HD 100453 AB system and the tidal interaction of the companion with the disk
- Discovery of an Edge-on Debris Disk with a Dust Ring and an Outer Disk Wing-tilt Asymmetry
- Keck/NIRC2 Imaging of the Warped, Asymmetric Debris Disk around HD 32297
- Non-Keplerian spirals, a gas-pressure dust trap and an eccentric gas cavity in the circumbinary disc around HD 142527
- The ALMA view of MP Mus (PDS 66): a protoplanetary disk with no visible gaps down to 4 au scales
- ALMA Band 6 high-resolution observations of the transitional disk around SY Cha
- Characterizing the Galactic warp with Gaia: I. The tilted ring model with a twist
- The surprising evolution of the shadow on the TW Hya disk
- The SPHERE view of three interacting twin disc systems in polarised light
- Molecules with ALMA at Planet-forming Scales (MAPS). Complex Kinematics in the AS 209 Disk Induced by a Forming Planet and Disk Winds
- A kinematic excess in the annular gap and gas depleted cavity in the disc around HD 169142
- Characteristics of small protoplanetary disc warps in kinematic observations
- Gas accretion within the dust cavity in AB Aur
- SUBARU Near-Infrared Imaging Polarimetry of Misaligned Disks Around The SR24 Hierarchical Triple System