High-resolution Spectroscopy of [Ne II] Emission from TW Hya

Abstract

We present high-resolution echelle spectra of [Ne II] 12.81 micron emission from the classical T Tauri star (CTTS) TW Hya obtained with MICHELLE on Gemini North. The line is centered at the stellar radial velocity and has an intrinsic FWHM of 21\pm 4 km/s. The line width is broader than other narrow emission lines typically associated with the disk around TW Hya. If formed in a disk, the line broadening could result from turbulence in a warm disk atmosphere, Keplerian rotation at an average distance of 0.1 AU from the star, or a photoevaporative flow from the optically-thin region of the disk. We place upper limits on the [Ne II] emission flux from the CTTSs DP Tau and BP Tau.

Accepted by ApJ. 18 pages, including 2 figures and 2 tables

References in corpus (5)

• An Inner Hole in the Disk around TW Hydrae Resolved in 7 Millimeter Dust Emission
• c2d Spitzer IRS Spectra of Disks around T Tauri Stars. III. [Ne II], [Fe I], and H_2 gas-phase lines
• Neon Fine-Structure Line Emission By X-ray Irradiated Protoplanetary Disks
• How Hot is the Wind from TW Hydrae?
• Spectropolarimetry of the Classical T Tauri Star TW Hydrae

Cited by in corpus (7)

• X-ray irradiated protoplanetary disk atmospheres I: Predicted emission line spectrum and photoevaporation
• [NeII] emission line profiles from photoevaporative disc winds
• Atomic Diagnostics of X-ray Irradiated Protoplanetary Disks
• From discs to planetesimals I: evolution of gas and dust discs
• The TEXES Survey For H2 Emission From Protoplanetary Disks
• An outflow origin of the [NeII] emission in the T Tau triplet
• Quiescent H2 Emission From Pre-Main Sequence Stars in Chamaeleon I