Gas Phase diagnostics of Protoplanetary disk extension

Abstract

We investigate the potential of using ratios of fine structure and near-infrared forbidden line transitions of atomic carbon to diagnose protoplanetary disk extension. Using results from 2D photoionisation and radiative transfer modeling of a realistic protoplanetary disk structure irradiated by X-rays from a T Tauri star, we obtain theoretical emission maps from which we construct radial distributions of the strongest emission lines produced in the disk. We show that ratios of fine structure to near-infrared forbidden line emission of atomic carbon are especially promising to constrain the minimum size of gaseous protoplanetary disks. While theoretically viable, the method presents a number of observational difficulties that are also discussed here.

9 pages 2 figures, Accepted by A&A

References in corpus (22)

• Interpreting Spectral Energy Distributions from Young Stellar Objects. I. A grid of 200,000 YSO model SEDs
• New Grids of ATLAS9 Model Atmospheres
• High Resolution Submillimeter Constraints on Circumstellar Disk Structure
• UV excess measures of accretion onto young very low-mass stars and brown dwarfs
• X-ray irradiated protoplanetary disk atmospheres I: Predicted emission line spectrum and photoevaporation
• Gas and Dust Emission at the Outer Edge of Protoplanetary Disks
• Millimeter imaging of HD 163296: probing the disk structure and kinematics
• c2d Spitzer IRS Spectra of Disks around T Tauri Stars. III. [Ne II], [Fe I], and H_2 gas-phase lines
• Detection of [Ne II] Emission from Young Circumstellar Disks
• Probing the Dust and Gas in the Transitional Disk of CS Cha with Spitzer
• Neon Fine-Structure Line Emission By X-ray Irradiated Protoplanetary Disks
• X-ray enabled MOCASSIN: a 3D code for photoionized media
• UV Radiation Fields Produced by Young Embedded Star Clusters
• Dust yields in clumpy SN shells: SN 1987A revisited
• Investigating grain growth in disks around southern T Tauri stars at millimetre wavelengths
• CO J=6-5 observations of TW Hya with the SMA
• The Spitzer c2d Survey of Large, Nearby, Interstellar Clouds.X. The Chamaeleon II Pre-Main Sequence Population as Observed With IRAC and MIPS
• High-resolution Spectroscopy of [Ne II] Emission from TW Hya
• Modeling the gas-phase chemistry of the transitional disk around HD 141569A
• Atomic Diagnostics of X-ray Irradiated Protoplanetary Disks
• WWW Database of Models of Accretion Disks Irradiated by The Central Star
• Star and Planet Formation with ALMA: an Overview

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• X-ray irradiated protoplanetary disk atmospheres II: Predictions from models in hydrostatic equilibrium
• Theoretical spectra of photoevaporating protoplanetary discs: An atlas of atomic and low-ionisation emission lines
• A Widely-Separated, Highly-Occluded Companion to the Nearby Low-Mass T Tauri Star TWA 30
• X-ray Ionization of Heavy Elements Applied to Protoplanetary Disks
• The imprint of X-ray photoevaporation of planet-forming discs on the orbital distribution of giant planets
• CI observations in the CQ Tau proto-planetary disk: evidence for a very low gas-to-dust ratio ?