Toward the Direct Detection of Extrasolar Giant Planets

直接探测太阳系外巨行星

• 批准号: 09440095
• 负责人: TAMURA Motohide
• 金额: $ 7.17万
• 依托单位: National Astronomical Observatory
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09440095/
• 关键词: 赤外線; 系外惑星; 褐色矮星; コロナグラフ

How do the planets form? What is the origin of our solar system? Is it unique? In order to answer these questions, it is not enough to study our solar system alone and we need to detect and characterize planetary systems outside our solar system. Encouraged with the recent INDIRECT discoveries of extrasolar planets, the next step should be their DIRECT detection. The aim of this research is the development of a stellar-coronagraph combined with the adaptive optics and its application to the direct detection of giant planets. It is also aimed to conduct infrared surveys in order to detect unique targets for extrasolar planets detection.We have successfully completed the instrument development and its first light has been obtained at the telescope. Our infrared surveys in star forming regions have brought a serendipitous discovery of a number of young brown dwarfs and even isolated free-floating planets. Both instrument development and the scientific results have been published in the literatures as well as being introduced in major newspapers.

行星如何形成？我们的太阳系的起源是什么？它是独一无二的吗？为了回答这些问题，仅研究我们的太阳系还不足，我们需要检测和表征太阳系之外的行星系统。在最近间接发现外星行星的间接发现的鼓励下，下一步应该是他们的直接检测。这项研究的目的是开发恒星 - 孔的发展，并结合自适应光学量及其在直接检测巨型行星中的应用。它还旨在进行红外调查，以检测到极性行星检测到的独特目标。我们已经成功完成了仪器的开发，并且在望远镜上获得了第一条光。我们在恒星形成区域中的红外调查带来了许多年轻的棕色矮人，甚至是孤立的自由浮动行星的偶然发现。仪器开发和科学结果均已在文献中发表，并在主要报纸上引入。

项目成果

Nakajima, Y., Tamura, M., Oasa, Y., Nakajima, Y.: "A near infrared imaging survey of the Lupus 3 dark cloud"Astronomical Journal. 119. 873-881 (2000)

Nakajima, Y.、Tamura, M.、Oasa, Y.、Nakajima, Y.：“狼疮 3 号暗云的近红外成像调查”天文学杂志。

田村元秀 ほか: "Coronagraphic imager with adaptive optics (CIAO): description and first results"Proc.SPIE. 4008. 1153-1161 (2000)

Motohide Tamura 等人：“具有自适应光学器件的冠状成像仪 (CIAO)：描述和初步结果”Proc.SPIE 4008. 1153-1161 (2000)

田村元秀 ほか: "Isolated and companion young brown dwarfs in the Taurus and Chamaeleon molecular clouds"Science. 282. 1095-1097 (1998)

Motohide Tamura 等人：“金牛座和变色龙分子云中的孤立和伴生年轻褐矮星”科学 282. 1095-1097 (1998)

中川、 奥田、 西村、 他: "Large-scale survey observations of the far-infrared 〔C II〕line emission" ASP Conference Series. 132(印刷中). (1998)

Nakakawa、Okuda、Nishimura 等人：“远红外 [C II] 线发射的大规模调查观测” ASP 会议系列 132（出版中）。

Itoh, Y., Tamura, M., Nakajima, T.: "A near-infrared search for companions around very low luminosity young stellar objects"Astronomical Journal. 117. 1471-1484 (1999)

Itoh, Y.、Tamura, M.、Nakajima, T.：“在非常低光度的年轻恒星周围近红外搜索伴星”天文学杂志。