报告题目:CCAT: A wide-field submillimeter telescope at an exceptional site
报 告 人:Prof. Martha P. Haynes (Cornell University)
报告人简介:Martha P. Haynes 教授不仅是CCAT 项目的主要负责人之一,也是美国科学院院士,康奈尔大学的知名讲座教授,并任国际天文联合会副主席。她曾经主持过美国Arecibo天文台的目前世界最大的射电望远镜工作,在世界天文学界曾多次获得学术荣誉奖,对射电天文学的发展有突出的贡献。
亚毫米波段的巨型单孔径望远镜CCAT是美国在未来十年在南半球最大的天文项目之一, 由康奈尔大学主导,并联合加拿大,德国及日本的一些一流的天文机构进行设计和建设。其科学目标和国际天文界最近已在智利建成并投入运行的巨型毫米及亚毫米波望远镜阵ALMA 相辅相成,在建成以后有望主导未来几十年的有关科学领域的深度观测和巡天任务。对天体物理学的进一步发展有重大意义。
摘 要:Over cosmic time, half of the radiation emitted by stars has been absorbed by dust and re-emitted at far-infrared and submillimeter wavelengths, so that a full understanding of the star formation history of the Universe requires observations in the submillimeter bands. CCAT will be a 25-meter submillimeter telescope that will enable a broad range of astronomical studies focused on the origins of stars, galaxies and galaxy clusters. Located on a high elevation site in the Atacama Desert of northern Chile, CCAT is designed to provide sensitive high angular resolution observations at submillimeter wavelengths (3.5 arcsec at 350 microns) over a 1 degree field-of-view. The combination of the large aperture telescope, on a prime observing site, with a wide field-of-view, and equipped with state-of-the-art large-format cameras and spectrometers makes CCAT a powerful discovery instrument.
时 间:2015年3月31日 星期二 下午13:00
地 点:(北京西路2号)紫台大楼619会议室
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紫金山天文台学术委员会