A localized kinematic structure detected in atomic carbon emission spatially coincident with a proposed protoplanet in the HD 163296 disk

Abstract

Over the last five years, studies of the kinematics in protoplanetary disks have led to the discovery of new protoplanet candidates and several structures linked to possible planet-disk interactions. We detect a localized kinematic bipolar structure in the HD 163296 disk present inside the deepest dust gap at 48 au from atomic carbon line emission. HD 163296's stellar jet and molecular winds have been described in detail in the literature; however, the kinematic anomaly in C I emission is not associated with either of them. Further, the velocity of the kinematic structure points indicates a component fast enough to differentiate it from the Keplerian profile of the disk; and its atomic nature hints at a localized UV source strong enough to dissociate CO and launch a C I outflow, or a strong polar flow from the upper layers of the disk. By discarding the stellar jet and previously observed molecular winds, we explore different sources for this kinematic feature in C I emission that could be associated with a protoplanet inflow/outflow, or disk winds.

arXiv commentAccepted for publication in ApJL, 11 pages, 6 figures

References in corpus (45)

• Astropy: A Community Python Package for Astronomy
• The Astropy Project: Building an inclusive, open-science project and status of the v2.0 core package
• An atomic and molecular database for analysis of submillimetre line observations
• The Disk Substructures at High Angular Resolution Project (DSHARP): I. Motivation, Sample, Calibration, and Overview
• The photodissociation and chemistry of CO isotopologues: applications to interstellar clouds and circumstellar disks
• The Disk Substructures at High Angular Resolution Project (DSHARP): II. Characteristics of Annular Substructures
• Two accreting protoplanets around the young star PDS 70
• The Disk Substructures at High Angular Resolution Project (DSHARP): VII. The Planet-Disk Interactions Interpretation
• Accretion-powered Stellar Winds as a Solution to the Stellar Angular Momentum Problem
• A Kinematical Detection of Two Embedded Jupiter Mass Planets in HD 163296
• Kinematic evidence for an embedded protoplanet in a circumstellar disc
• Molecules with ALMA at Planet-forming Scales (MAPS) I: Program Overview and Highlights
• Organic molecules in protoplanetary disks around TTauri and HerbigAe stars
• Accretion of Jupiter-mass Planets in the Limit of Vanishing Viscosity
• Meridional flows in the disk around a young star
• The Disk Substructures at High Angular Resolution Project (DSHARP) - IX. A high definition study of the HD 163296 planet forming disk
• Planet formation signposts: observability of circumplanetary disks via gas kinematics
• Global hydromagnetic simulations of a planet embedded in a dead zone: gap opening, gas accretion and formation of a protoplanetary jet
• Final Masses of Giant Planets II: Jupiter Formation in a Gas-Depleted Disk
• Gap Opening in 3D: Single Planet Gaps
• Do Proto-Jovian Planets Drive Outflows?
• Water vapor distribution in protoplanetary disks
• Relating jet structure to photometric variability: the Herbig Ae star HD 163296
• Observability of planet-disc interactions in CO kinematics
• New constraints on turbulence and embedded planet mass in the HD 163296 disk from planet-disk hydrodynamic simulations
• Inferring giant planets from ALMA millimeter continuum and line observations in (transition) disks
• A new planet candidate detected in a dust gap of the disc around HD 163296 through localised kinematic signatures. An observational validation of the Discminer
• ALMA detection of the rotating molecular disk wind from the young star HD 163296
• Molecules with ALMA at Planet-forming Scales (MAPS) VI: Distribution of the small organics HCN, C2H, and H2CO
• The Role of Disk Winds in the Evolution and Dispersal of Protoplanetary Disks
• ALMA Detection of Dust Trapping around Lagrangian Points in the LkCa 15 Disk
• Molecules with ALMA at Planet-forming Scales (MAPS) XVI: Characterizing the impact of the molecular wind on the evolution of the HD 163296 system
• Accretion Outbursts in Circumplanetary Disks
• Constraining Protoplanetary Disk Accretion and Young Planets Using ALMA Kinematic Observations
• Mapping the Planetary Wake in HD 163296 with Kinematics
• Dust trapping around Lagrangian points in protoplanetary disks
• Searching for H${}_{\alpha }$-emitting sources in the gaps of five transitional disks. SPHERE/ZIMPOL high-contrast imaging
• Chemical Evolution in a Protoplanetary Disk within Planet Carved Gaps and Dust Rings
• Determining mass limits around HD163296 through SPHERE direct imaging data
• Magnetically driven outflows from Jovian circum-planetaryaccretion disks
• The evolution of the jet from Herbig Ae star HD 163296 from 1999 to 2011
• A MUSE view of the asymmetric jet from HD 163296
• The Morphology of the HD 163296 jet as a window on its planetary system
• The interplay between forming planets and photo-evaporating discs I: Forbidden line diagnostics
• Mapping the 3D Kinematical Structure of the Gas Disk of HD 169142

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• A gap-sharing planet pair shaping the crescent in HD 163296: a disk sculpted by a resonant chain
• exoALMA. XVII. Characterizing the Gas Dynamics around Dust Asymmetries
• PDRs4All. X. ALMA and JWST detection of neutral carbon in the externally irradiated disk d203-506: Undepleted gas-phase carbon
• Vertical and radial distribution of atomic carbon in HD 163296
• HD 163296 and its Giant Planets: Creation of Exo-comets, Interstellar Objects and Transport of Volatile Material