Disks around the young stars TW hydrae and HD 100546 imaged at 3.4 millimeters with the Australia Telescope Compact Array

D. J. Wilner; T. L. Bourke; C. M. Wright; J. K. Jørgensen; E. F. Van Dishoeck; T. Wong

doi:10.1086/377627

Disks around the young stars TW hydrae and HD 100546 imaged at 3.4 millimeters with the Australia Telescope Compact Array

D. J. Wilner, T. L. Bourke, C. M. Wright, J. K. Jørgensen, E. F. Van Dishoeck, T. Wong

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

Abstract

We present observations of the young stars TW Hya and HD 100546 made with the Australia Telescope Compact Array at 89 GHz with ∼2″ resolution and ∼3 mJy continuum sensitivity. Compact thermal dust continuum emission is detected from disks surrounding both stars. HD 100546 also shows hints of extended emission, presumably a residual protostellar envelope, which is also visible in scattered light at optical wavelengths. For TW Hya, HCO⁺ J = 1-0 line emission from the circumstellar disk is detected and spatially resolved. The observed size and intensity are in good agreement with model calculations based on an irradiated disk with substantial depletions derived previously from single-dish observations of higher J HCO⁺ transitions.

Original language	English (US)
Pages (from-to)	597-602
Number of pages	6
Journal	Astrophysical Journal
Volume	596
Issue number	1 I
DOIs	https://doi.org/10.1086/377627
State	Published - Oct 10 2003
Externally published	Yes

Keywords

Circumstellar matter
Planetary systems: protoplanetary disks
Stars: individual (TW Hydrae, HD 100546)

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

Online availability

10.1086/377627

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title = "Disks around the young stars TW hydrae and HD 100546 imaged at 3.4 millimeters with the Australia Telescope Compact Array",

abstract = "We present observations of the young stars TW Hya and HD 100546 made with the Australia Telescope Compact Array at 89 GHz with ∼2″ resolution and ∼3 mJy continuum sensitivity. Compact thermal dust continuum emission is detected from disks surrounding both stars. HD 100546 also shows hints of extended emission, presumably a residual protostellar envelope, which is also visible in scattered light at optical wavelengths. For TW Hya, HCO+ J = 1-0 line emission from the circumstellar disk is detected and spatially resolved. The observed size and intensity are in good agreement with model calculations based on an irradiated disk with substantial depletions derived previously from single-dish observations of higher J HCO+ transitions.",

keywords = "Circumstellar matter, Planetary systems: protoplanetary disks, Stars: individual (TW Hydrae, HD 100546)",

author = "Wilner, {D. J.} and Bourke, {T. L.} and Wright, {C. M.} and J{\o}rgensen, {J. K.} and {Van Dishoeck}, {E. F.} and T. Wong",

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T1 - Disks around the young stars TW hydrae and HD 100546 imaged at 3.4 millimeters with the Australia Telescope Compact Array

AU - Wilner, D. J.

AU - Bourke, T. L.

AU - Wright, C. M.

AU - Jørgensen, J. K.

AU - Van Dishoeck, E. F.

AU - Wong, T.

PY - 2003/10/10

Y1 - 2003/10/10

N2 - We present observations of the young stars TW Hya and HD 100546 made with the Australia Telescope Compact Array at 89 GHz with ∼2″ resolution and ∼3 mJy continuum sensitivity. Compact thermal dust continuum emission is detected from disks surrounding both stars. HD 100546 also shows hints of extended emission, presumably a residual protostellar envelope, which is also visible in scattered light at optical wavelengths. For TW Hya, HCO+ J = 1-0 line emission from the circumstellar disk is detected and spatially resolved. The observed size and intensity are in good agreement with model calculations based on an irradiated disk with substantial depletions derived previously from single-dish observations of higher J HCO+ transitions.

AB - We present observations of the young stars TW Hya and HD 100546 made with the Australia Telescope Compact Array at 89 GHz with ∼2″ resolution and ∼3 mJy continuum sensitivity. Compact thermal dust continuum emission is detected from disks surrounding both stars. HD 100546 also shows hints of extended emission, presumably a residual protostellar envelope, which is also visible in scattered light at optical wavelengths. For TW Hya, HCO+ J = 1-0 line emission from the circumstellar disk is detected and spatially resolved. The observed size and intensity are in good agreement with model calculations based on an irradiated disk with substantial depletions derived previously from single-dish observations of higher J HCO+ transitions.

KW - Circumstellar matter

KW - Planetary systems: protoplanetary disks

KW - Stars: individual (TW Hydrae, HD 100546)

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Disks around the young stars TW hydrae and HD 100546 imaged at 3.4 millimeters with the Australia Telescope Compact Array

Abstract

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