High-resolution spectroscopy of [Ne Π] emission from TW hydrae

Gregory J. Herczeg; Joan R. Najita; Lynne A. Hillenbrand; Ilaria Pascucci

doi:10.1086/521545

High-resolution spectroscopy of [Ne Π] emission from TW hydrae

Gregory J. Herczeg, Joan R. Najita, Lynne A. Hillenbrand, Ilaria Pascucci

Research output: Contribution to journal › Article › peer-review

50 Scopus citations

Abstract

We present high-resolution echelle spectra of [Nen Π] 12.81 μm. 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 ± 4 km s^-1. 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 Π] emission flux from the CTTSs DP Tau and BP Tau.

Original language	English (US)
Pages (from-to)	509-515
Number of pages	7
Journal	Astrophysical Journal
Volume	670
Issue number	1
DOIs	https://doi.org/10.1086/521545
State	Published - Nov 20 2007

Keywords

Infrared: stars
Planetary systems: protoplanetary disks
Stars: pre-main-sequence

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1086/521545

Cite this

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title = "High-resolution spectroscopy of [Ne Π] emission from TW hydrae",

abstract = "We present high-resolution echelle spectra of [Nen Π] 12.81 μm. 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 ± 4 km s-1. 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 Π] emission flux from the CTTSs DP Tau and BP Tau.",

keywords = "Infrared: stars, Planetary systems: protoplanetary disks, Stars: pre-main-sequence",

author = "Herczeg, {Gregory J.} and Najita, {Joan R.} and Hillenbrand, {Lynne A.} and Ilaria Pascucci",

year = "2007",

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doi = "10.1086/521545",

language = "English (US)",

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journal = "Astrophysical Journal",

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T1 - High-resolution spectroscopy of [Ne Π] emission from TW hydrae

AU - Herczeg, Gregory J.

AU - Najita, Joan R.

AU - Hillenbrand, Lynne A.

AU - Pascucci, Ilaria

PY - 2007/11/20

Y1 - 2007/11/20

N2 - We present high-resolution echelle spectra of [Nen Π] 12.81 μm. 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 ± 4 km s-1. 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 Π] emission flux from the CTTSs DP Tau and BP Tau.

AB - We present high-resolution echelle spectra of [Nen Π] 12.81 μm. 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 ± 4 km s-1. 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 Π] emission flux from the CTTSs DP Tau and BP Tau.

KW - Infrared: stars

KW - Planetary systems: protoplanetary disks

KW - Stars: pre-main-sequence

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JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1

ER -

High-resolution spectroscopy of [Ne Π] emission from TW hydrae

Abstract

Keywords

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