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2次元輻射輸送計算に基づくスペクトルのモデル計算による原始星の研究
http://hdl.handle.net/2241/6687
http://hdl.handle.net/2241/6687cd36279f-86ec-458b-925b-3427f5ba97d5
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A3117.pdf (216.3 kB)
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1.pdf (1.1 MB)
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| Item type | Thesis or Dissertation(1) | |||||
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| 公開日 | 2007-07-25 | |||||
| タイトル | ||||||
| タイトル | 2次元輻射輸送計算に基づくスペクトルのモデル計算による原始星の研究 | |||||
| 言語 | ja | |||||
| タイトル | ||||||
| タイトル | A study of protostars with spectral modeling based on the two-dimensional radiativer transfer calculations | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | jpn | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_db06 | |||||
| 資源タイプ | doctoral thesis | |||||
| アクセス権 | ||||||
| アクセス権 | open access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
| 著者 |
中里, 剛
× 中里, 剛 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | We constructed two-dimensional radiative equilibrium protostar model to infer the structure of the Class I objects, which are considered as protostellar candidate. In the present model, we assumed that the protostar consists of three components; a central star, a circumstellar disk, and an envelope. We computed the temperature distribution of the circumstellar material under the condition of the radiative equilibrium. We simulated Spectral Energy Distribution (SED) of Class I object. We first showed that the detailed treatment of radiation transfer is essential to the protostar. We next revealed the relation between the emergent SEDs and the physical structure of the protostar. Based on these results, we established the standard procedure to infer the physical property of the protostar from the emergent SED. Furthermore, we proposed two new indicators,(νLν)max, which is the peak flux of the SED, and fL, which is the ratio of emergent luminosity LSED to the peak flux. The former is useful to estimate the luminosity of the central star, and the latter is effective as an indicator of inclination angle of the system. Finally, we applied the procedure to two protostellar candidates, IRAS 04365+2535(TMC1A), belonging to Class I, and VLA1623, a prototype of Class 0. We showed that these objects surely belong to the observed Classes. We also discussed the evolutionary state of these objects based on the spectral modeling of their SEDs. As a result, TMC1A is in the intermediate phase of the Class I stage of the final mass ~0.3M , while VLA1623 is in the earlier phase of the Class 0 stage of the final stellar mass ~0.5M . | |||||
| 言語 | en | |||||
| 内容記述 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | Includes bibliographical references | |||||
| 言語 | en | |||||
| 書誌情報 |
発行日 2003 |
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| フォーマット | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | application/pdf | |||||
| 取得学位 | ||||||
| 言語 | ja | |||||
| 学位名 | 博士（物理学） | |||||
| 取得学位 | ||||||
| 言語 | en | |||||
| 学位名 | Doctor of Philosophy in Physics | |||||
| 学位授与大学 | ||||||
| 学位授与機関識別子Scheme | kakenhi | |||||
| 学位授与機関識別子 | 12102 | |||||
| 言語 | ja | |||||
| 学位授与機関名 | 筑波大学 | |||||
| 言語 | en | |||||
| 学位授与機関名 | University of Tsukuba | |||||
| 学位授与年度 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | 2002 | |||||
| 学位授与年月日 | ||||||
| 学位授与年月日 | 2003-03-25 | |||||
| 報告番号 | ||||||
| 学位授与番号 | 甲第3117号 | |||||
