Rotation of Molecular Outflows

分子流出的旋转

• 批准号: 13640233
• 负责人: DOBASHI Kazuhito
• 金额: $ 1.66万
• 依托单位: Tokyo Gakugei University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13640233/
• 关键词: Molecular Outflow; Protostars; Molecular Cloud Core; Dark Cloud; Interstellar Medium; Star Formation; Molecular Clouds; Massive Stars; 電波天文学; 分子流

We have attempted to detect rotation of molecular clouds along their axes. It has been a long-standing issue to probe into the possible rotational motion, because outflows should play an important role in star formation to release the huge amount of angular momentum in the parent molecular cloud cores which prevents the cores from collapsing. In this research, we observed two massive protostars IRAS 22134+5834 and GH2O 092.67+03.07 with some molecular emission lines in the millimeter wavelength including CO(J=1-0). In the case of IRAS 22134+5834, we detected an interesting velocity structure suggesting such motion, although the velocity field around this object is too complex to evidence the definite rotation. A clear rotational motion is detected in the case of the other object GH2O 092.67+03.07. We have already published the data for IRAS 22134+5834 at the end of 2001, and now are summarizing the results for IRAS 22134+5834 at the end of 2001, and now we are summarizing the results for GH2O 092.67+03.07, which will be published in a refereed journal within a year from now.

我们试图探测分子云沿其轴线的旋转。探索可能的自转运动一直是一个长期存在的问题，因为外流应该在恒星形成过程中发挥重要作用，释放母分子云核中的巨大角动量，防止核心坍塌。在这项研究中，我们观测到了两颗大质量原星IRAS 22134+5834和GH2O 092.67+03.07，它们在毫米波包括CO(J=1-0)的分子发射线。在IRAS 22134+5834的情况下，我们探测到了一个有趣的速度结构，表明了这种运动，尽管这个天体周围的速度场太复杂，无法证明它有明确的自转。在另一物体GH2O 092.67+03.07的情况下检测到明显的旋转运动。我们已经在2001年底发表了IRAS 22134+5834的数据，现在正在总结2001年底IRAS 22134+5834的结果，现在我们正在总结GH2O 092.67+03.07的结果，这些结果将在一年内发表在一份有参考价值的期刊上。

项目成果

佐藤文男, 土橋一仁, 三宅玲子: "カメレオン座分子雲領域の星間ガスの研究"東京学芸大学紀要 第4部門. 54巻. 131-141 (2002)

佐藤文雄、土桥一仁、三宅玲子：“变色龙分子云区域的星际气体研究”东京学艺大学通报第 4 卷 54. 131-141 (2002)

K. Dobashi, Y. Yonekura, and Y. Hayashi: "A New Look at CO Outflows in the Dark Cloud Complex near IC 5146"Publ. Astron. Soc. Japan. 53 (2001)

K. Dobashi、Y. Yonekura 和 Y. Hayashi：“IC 5146 附近暗云复合体中二氧化碳流出的新视角”Publ。

Dobashi, K. 他2名: "A New Look at CO Outflows in the Dark Cloud Complex near IC5146"Publ. Astron. Soc. Japan. 53. 811-820 (2001)

Dobashi, K. 和其他 2 人：“IC5146 附近的暗云复合体中二氧化碳流出的新视角”Soc Japan。 53. 811-820 (2001)

土橋一仁: "Digitized Sky Survey を利用した暗黒星雲の全天探査"天文月報. Vol.95. 334-338 (2002)

Kazuhito Tsuchihashi：“利用数字化巡天对暗星云进行全天探索”天文学月报第 95 卷（2002 年）。

S.Nishiura, K.Onishi, K.Dobashi: "Optical Imaging of the Radiant Points of Leonids during 2001 storm with the 105cm Kiso Schmidt Telescope"Publ.Astron.Soc.Japan. Vol.54. L83-L88 (2002)

S.Nishiura、K.Onishi、K.Dobashi：“使用 105 厘米 Kiso Schmidt 望远镜对 2001 年风暴期间狮子座流星雨辐射点的光学成像”Publ.Astron.Soc.Japan。