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Imaging the disk around TW Hydrae with the submillimeter array
文献类型：期刊论文
| 作者 | Qi, CH; Ho, PTP; Wilner, DJ; Takakuwa, S; Hirano, N; Ohashi, N; Bourke, TL; Zhang, QH; Blake, GA; Hogerheijde, M |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2004-11-20 |
| 卷号 | 616期号:1页码:L11-L14 |
| ISSN号 | 0004-637X |
| 关键词 | circumstellar matter ISM : molecules planetary systems : protoplanetary disks radio lines : stars stars : individual (TW Hydrae) |
| 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 |
| 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. |
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来源：紫金山天文台
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