CIRCULAR POLARIZATION AND HOMOCHIRALITY IN STAR FORMING REGIONS

恒星形成区域的圆偏振和同手性

基本信息

批准号：
12309010
负责人：
TAMURA Motohide
金额：
$ 14.66万
依托单位：
NATIONAL ASTRONOMICAL OBSERVATORY OF JAPAN (NAOJ)
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
2000
资助国家：
日本
起止时间：
2000 至 2003
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12309010/
关键词：
INFRARED STAR FORMATION POLARIZATION CHIRALITY E.T.

项目摘要

This research is based on the discovery of large circular polarization in the Orion star forming region by an international team including ours. A proposal that the homochirality of life is from space is emerged. In order to establish this idea, it is necessary to develop special polarimeters and to conduct observations of a number of star forming regions in our and in the Magellanic clouds. The outcome of such observations is a database of astronomical polarizations in star forming regions and this will be a clue to understand if the circular polarizations in star forming regions are imprinted in intercloud molecules, then brought to the Earth by meteors or comets. We have successfully developed a polarimeter for the Subaru 8.2m telescope (atop of Mauna Kea, in Hawaii), called CIAO polarimeter. We have also developed a portable ultra-accurate polarimeter. The former polarimeter is used in regular open observations. This enables astronomers to observe polarizations with a very high resolution (0.1 arcsec), about one order higher resolution than the conventional optical and infrared polarimetry. This capability on the Subaru telescope is the first among the world 8-10 meter class telescopes. The letter polarimeter can detect any polarizations due to the presence of extrasolar planets around nearby stars. This is currently one of the hottest topics in the extrasolar planets fields. The polarimeter has finished test observations at the University of Hawaii 2.2 meter telescope at Mauna Kea and we have confirmed the accuracy of the polarimeter is better than 10^(-6). We have also conducted a number of related observations in star forming regions.

这项研究是基于包括我们的国际团队在猎户座之星形成区域中发现大循环两极分化的基础。提出了生命的同源性来自太空的提议。为了建立这一想法，有必要开发特殊的偏光仪，并对我们和麦哲伦云中许多恒星形成区域进行观察。这种观察结果的结果是恒星形成区域中天文极化的数据库，这将是了解是否将恒星形成区域中的圆极化印在云间分子中，然后由流星或彗星带到地球上。我们已经成功地为斯巴鲁820万望远镜（夏威夷的Mauna Kea的顶部）开发了一个偏光仪，称为CIAO Polarimeter。我们还开发了一种便携式超精确偏振仪。以前的偏振计用于常规开放观测。这使天文学家能够观察到极高分辨率（0.1 ARCSEC）的极化，大约比常规光学和红外极光法更高的分辨率。 Subaru望远镜上的这种能力是世界8-10米级望远镜中的第一个。字母极化计可以检测到附近恒星周围存在极地球的任何极化。目前，这是外行星田地上最热门的主题之一。偏振仪已在Mauna Kea的夏威夷大学2.2米的望远镜上完成了测试观察结果，我们证实了偏振仪的准确性大于10^（-6）。我们还在恒星形成区域进行了许多相关的观察结果。