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.

行星是如何形成的？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，仅仅研究我们的太阳系是不够的，我们需要探测和描述太阳系以外的行星系统。受到最近太阳系外行星的间接发现的鼓舞，下一步应该是直接探测它们。这项研究的目的是开发一种结合自适应光学的恒星日冕仪，并将其应用于直接探测巨行星。它还旨在进行红外巡天，以便探测太阳系外行星探测的独特目标，我们已经成功地完成了仪器的研制，并在望远镜上获得了它的第一束光。我们在星星形成区的红外线观测，意外地发现了一些年轻的褐矮星，甚至还有孤立的自由漂浮行星。仪器的研制和科学成果已发表在文献中，并在主要报纸上介绍。

项目成果

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)

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)

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。

中島康 ほか: "A near infrared imaging survey of the Lupus 3 dark cloud"Astronomical Journal. 119. 873-881 (2000)

Yasushi Nakajima 等人：“Lupus 3 暗云的近红外成像调查”《天文学杂志》119. 873-881 (2000)。

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。