Imaging the disk around TW Hydrae with the submillimeter array

CORC > 紫金山天文台 > 中国科学院紫金山天文台 > 分子云与恒星形成研究团组

	Imaging the disk around TW Hydrae with the submillimeter array
	Qi, CH ; Ho, PTP ; Wilner, DJ ; Takakuwa, S ; Hirano, N ; Ohashi, N ; Bourke, TL ; Zhang, QH ; Blake, GA ; Hogerheijde, M
刊名	ASTROPHYSICAL JOURNAL
	2004-11-20
卷号	616 期号:1 页码:L11-L14
关键词	circumstellar matter ISM : molecules planetary systems : protoplanetary disks radio lines : stars stars : individual (TW Hydrae)
ISSN号	0004-637X
英文摘要	We present similar to2"-4" aperture synthesis observations of the circumstellar disk surrounding the nearby young star TW Hya in the CO J = 2-1 and J = 3-2 lines and associated dust continuum obtained with the partially completed Submillimeter Array. The extent and peak flux of the 230 and 345 GHz dust emission follow closely the predictions of the irradiated accretion disk model of Calvet et al. The resolved molecular line emission extends to a radius of at least 200 AU, the full extent of the disk visible in scattered light, and shows a clear pattern of Keplerian rotation. Comparison of the images with two-dimensional Monte Carlo models constrains the disk inclination angle to 7degrees +/- 1degrees. The CO emission is optically thick in both lines, and the kinetic temperature in the line formation region is similar to20 K. Substantial CO depletion, by an order of magnitude or more from canonical dark cloud values, is required to explain the characteristics of the line emission.
学科主题	Astronomy & Astrophysics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	MAIN-SEQUENCE STARS ; CIRCUMSTELLAR DISK ; RADIATIVE-TRANSFER ; YOUNG STARS ; X-RAY ; TAURI ; EMISSION ; CALIBRATION ; MODELS
收录类别	SCI
语种	英语
WOS记录号	WOS:000225199800003
公开日期	2012-12-22
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/7692]
专题	紫金山天文台_分子云与恒星形成研究团组
作者单位	1.Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA 2.Harvard Smithsonian Ctr Astrophys, Sunmillimeter Array Project, Hilo, HI 96720 USA 3.Acad Sinica, Inst Astron & Astrophys, Taipei 106, Taiwan 4.CALTECH, Div Geol & Planetary Sci, Pasadena, CA 91125 USA 5.CALTECH, Div Chem & Chem Engn, Pasadena, CA 91125 USA 6.Sterrewacht Leiden, NL-2300 RA Leiden, Netherlands 7.Natl Astron Observ Japan, Tokyo 1818588, Japan 8.Korea Astron Observ, Taeduk Radio Astron Observ, Taejon 305348, South Korea 9.Chinese Acad Sci, Purple Mt Observ, Nanjing 21008, Peoples R China
推荐引用方式 GB/T 7714	Qi, CH,Ho, PTP,Wilner, DJ,et al. Imaging the disk around TW Hydrae with the submillimeter array[J]. ASTROPHYSICAL JOURNAL,2004,616(1):L11-L14.
APA	Qi, CH.,Ho, PTP.,Wilner, DJ.,Takakuwa, S.,Hirano, N.,...&Yang, J.(2004).Imaging the disk around TW Hydrae with the submillimeter array.ASTROPHYSICAL JOURNAL,616(1),L11-L14.
MLA	Qi, CH,et al."Imaging the disk around TW Hydrae with the submillimeter array".ASTROPHYSICAL JOURNAL 616.1(2004):L11-L14.